CVEdetails.com the ultimate security vulnerability data source
(e.g.: CVE-2009-1234 or 2010-1234 or 20101234)
Log In   Register
Vulnerability Feeds & WidgetsNew   www.itsecdb.com  

GNU » Glibc : Security Vulnerabilities

Press ESC to close
# CVE ID CWE ID # of Exploits Vulnerability Type(s) Publish Date Update Date Score Gained Access Level Access Complexity Authentication Conf. Integ. Avail.
1 CVE-2021-33574 416 DoS 2021-05-25 2021-06-14
7.5
None Remote Low Not required Partial Partial Partial
The mq_notify function in the GNU C Library (aka glibc) versions 2.32 and 2.33 has a use-after-free. It may use the notification thread attributes object (passed through its struct sigevent parameter) after it has been freed by the caller, leading to a denial of service (application crash) or possibly unspecified other impact.
2 CVE-2021-27645 415 DoS 2021-02-24 2021-05-22
1.9
None Local Medium Not required None None Partial
The nameserver caching daemon (nscd) in the GNU C Library (aka glibc or libc6) 2.29 through 2.33, when processing a request for netgroup lookup, may crash due to a double-free, potentially resulting in degraded service or Denial of Service on the local system. This is related to netgroupcache.c.
3 CVE-2021-3326 617 DoS 2021-01-27 2021-03-19
5.0
None Remote Low Not required None None Partial
The iconv function in the GNU C Library (aka glibc or libc6) 2.32 and earlier, when processing invalid input sequences in the ISO-2022-JP-3 encoding, fails an assertion in the code path and aborts the program, potentially resulting in a denial of service.
4 CVE-2020-29573 787 Overflow 2020-12-06 2021-01-26
5.0
None Remote Low Not required None None Partial
sysdeps/i386/ldbl2mpn.c in the GNU C Library (aka glibc or libc6) before 2.23 on x86 targets has a stack-based buffer overflow if the input to any of the printf family of functions is an 80-bit long double with a non-canonical bit pattern, as seen when passing a \x00\x04\x00\x00\x00\x00\x00\x00\x00\x04 value to sprintf. NOTE: the issue does not affect glibc by default in 2016 or later (i.e., 2.23 or later) because of commits made in 2015 for inlining of C99 math functions through use of GCC built-ins. In other words, the reference to 2.23 is intentional despite the mention of "Fixed for glibc 2.33" in the 26649 reference.
5 CVE-2020-29562 617 DoS 2020-12-04 2021-03-19
2.1
None Remote High ??? None None Partial
The iconv function in the GNU C Library (aka glibc or libc6) 2.30 to 2.32, when converting UCS4 text containing an irreversible character, fails an assertion in the code path and aborts the program, potentially resulting in a denial of service.
6 CVE-2020-27618 835 DoS 2021-02-26 2021-04-01
2.1
None Local Low Not required None None Partial
The iconv function in the GNU C Library (aka glibc or libc6) 2.32 and earlier, when processing invalid multi-byte input sequences in IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 encodings, fails to advance the input state, which could lead to an infinite loop in applications, resulting in a denial of service, a different vulnerability from CVE-2016-10228.
7 CVE-2020-10029 119 Overflow 2020-03-04 2020-07-09
2.1
None Local Low Not required None None Partial
The GNU C Library (aka glibc or libc6) before 2.32 could overflow an on-stack buffer during range reduction if an input to an 80-bit long double function contains a non-canonical bit pattern, a seen when passing a 0x5d414141414141410000 value to sinl on x86 targets. This is related to sysdeps/ieee754/ldbl-96/e_rem_pio2l.c.
8 CVE-2020-6096 191 Exec Code 2020-04-01 2021-03-04
6.8
None Remote Medium Not required Partial Partial Partial
An exploitable signed comparison vulnerability exists in the ARMv7 memcpy() implementation of GNU glibc 2.30.9000. Calling memcpy() (on ARMv7 targets that utilize the GNU glibc implementation) with a negative value for the 'num' parameter results in a signed comparison vulnerability. If an attacker underflows the 'num' parameter to memcpy(), this vulnerability could lead to undefined behavior such as writing to out-of-bounds memory and potentially remote code execution. Furthermore, this memcpy() implementation allows for program execution to continue in scenarios where a segmentation fault or crash should have occurred. The dangers occur in that subsequent execution and iterations of this code will be executed with this corrupted data.
9 CVE-2020-1752 416 Exec Code 2020-04-30 2021-01-29
3.7
None Local High Not required Partial Partial Partial
A use-after-free vulnerability introduced in glibc upstream version 2.14 was found in the way the tilde expansion was carried out. Directory paths containing an initial tilde followed by a valid username were affected by this issue. A local attacker could exploit this flaw by creating a specially crafted path that, when processed by the glob function, would potentially lead to arbitrary code execution. This was fixed in version 2.32.
10 CVE-2020-1751 787 DoS Exec Code 2020-04-17 2020-07-09
5.9
None Local Medium Not required Partial Partial Complete
An out-of-bounds write vulnerability was found in glibc before 2.31 when handling signal trampolines on PowerPC. Specifically, the backtrace function did not properly check the array bounds when storing the frame address, resulting in a denial of service or potential code execution. The highest threat from this vulnerability is to system availability.
11 CVE-2019-1010025 330 Bypass 2019-07-15 2020-11-16
5.0
None Remote Low Not required Partial None None
** DISPUTED ** GNU Libc current is affected by: Mitigation bypass. The impact is: Attacker may guess the heap addresses of pthread_created thread. The component is: glibc. NOTE: the vendor's position is "ASLR bypass itself is not a vulnerability."
12 CVE-2019-1010024 200 Bypass +Info 2019-07-15 2020-11-16
5.0
None Remote Low Not required Partial None None
** DISPUTED ** GNU Libc current is affected by: Mitigation bypass. The impact is: Attacker may bypass ASLR using cache of thread stack and heap. The component is: glibc. NOTE: Upstream comments indicate "this is being treated as a non-security bug and no real threat."
13 CVE-2019-1010023 Exec Code 2019-07-15 2020-11-16
6.8
None Remote Medium Not required Partial Partial Partial
** DISPUTED ** GNU Libc current is affected by: Re-mapping current loaded library with malicious ELF file. The impact is: In worst case attacker may evaluate privileges. The component is: libld. The attack vector is: Attacker sends 2 ELF files to victim and asks to run ldd on it. ldd execute code. NOTE: Upstream comments indicate "this is being treated as a non-security bug and no real threat."
14 CVE-2019-1010022 119 Overflow Bypass 2019-07-15 2021-06-10
7.5
None Remote Low Not required Partial Partial Partial
** DISPUTED ** GNU Libc current is affected by: Mitigation bypass. The impact is: Attacker may bypass stack guard protection. The component is: nptl. The attack vector is: Exploit stack buffer overflow vulnerability and use this bypass vulnerability to bypass stack guard. NOTE: Upstream comments indicate "this is being treated as a non-security bug and no real threat."
15 CVE-2019-25013 125 2021-01-04 2021-05-21
7.1
None Remote Medium Not required None None Complete
The iconv feature in the GNU C Library (aka glibc or libc6) through 2.32, when processing invalid multi-byte input sequences in the EUC-KR encoding, may have a buffer over-read.
16 CVE-2019-19126 200 Bypass +Info 2019-11-19 2020-07-09
2.1
None Local Low Not required Partial None None
On the x86-64 architecture, the GNU C Library (aka glibc) before 2.31 fails to ignore the LD_PREFER_MAP_32BIT_EXEC environment variable during program execution after a security transition, allowing local attackers to restrict the possible mapping addresses for loaded libraries and thus bypass ASLR for a setuid program.
17 CVE-2019-9192 674 2019-02-26 2020-08-24
5.0
None Remote Low Not required None None Partial
** DISPUTED ** In the GNU C Library (aka glibc or libc6) through 2.29, check_dst_limits_calc_pos_1 in posix/regexec.c has Uncontrolled Recursion, as demonstrated by '(|)(\\1\\1)*' in grep, a different issue than CVE-2018-20796. NOTE: the software maintainer disputes that this is a vulnerability because the behavior occurs only with a crafted pattern.
18 CVE-2019-9169 125 2019-02-26 2020-07-09
7.5
None Remote Low Not required Partial Partial Partial
In the GNU C Library (aka glibc or libc6) through 2.29, proceed_next_node in posix/regexec.c has a heap-based buffer over-read via an attempted case-insensitive regular-expression match.
19 CVE-2019-7309 2019-02-03 2020-08-24
2.1
None Local Low Not required None None Partial
In the GNU C Library (aka glibc or libc6) through 2.29, the memcmp function for the x32 architecture can incorrectly return zero (indicating that the inputs are equal) because the RDX most significant bit is mishandled.
20 CVE-2019-6488 404 2019-01-18 2020-06-13
4.6
None Local Low Not required Partial Partial Partial
The string component in the GNU C Library (aka glibc or libc6) through 2.28, when running on the x32 architecture, incorrectly attempts to use a 64-bit register for size_t in assembly codes, which can lead to a segmentation fault or possibly unspecified other impact, as demonstrated by a crash in __memmove_avx_unaligned_erms in sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S during a memcpy.
21 CVE-2018-1000001 787 Exec Code 2018-01-31 2019-10-03
7.2
None Local Low Not required Complete Complete Complete
In glibc 2.26 and earlier there is confusion in the usage of getcwd() by realpath() which can be used to write before the destination buffer leading to a buffer underflow and potential code execution.
22 CVE-2018-20796 674 2019-02-26 2019-11-05
5.0
None Remote Low Not required None None Partial
In the GNU C Library (aka glibc or libc6) through 2.29, check_dst_limits_calc_pos_1 in posix/regexec.c has Uncontrolled Recursion, as demonstrated by '(\227|)(\\1\\1|t1|\\\2537)+' in grep.
23 CVE-2018-19591 20 2018-12-04 2020-07-09
5.0
None Remote Low Not required None None Partial
In the GNU C Library (aka glibc or libc6) through 2.28, attempting to resolve a crafted hostname via getaddrinfo() leads to the allocation of a socket descriptor that is not closed. This is related to the if_nametoindex() function.
24 CVE-2018-11237 787 Overflow 2018-05-18 2020-08-24
4.6
None Local Low Not required Partial Partial Partial
An AVX-512-optimized implementation of the mempcpy function in the GNU C Library (aka glibc or libc6) 2.27 and earlier may write data beyond the target buffer, leading to a buffer overflow in __mempcpy_avx512_no_vzeroupper.
25 CVE-2018-11236 787 Exec Code Overflow 2018-05-18 2020-08-24
7.5
None Remote Low Not required Partial Partial Partial
stdlib/canonicalize.c in the GNU C Library (aka glibc or libc6) 2.27 and earlier, when processing very long pathname arguments to the realpath function, could encounter an integer overflow on 32-bit architectures, leading to a stack-based buffer overflow and, potentially, arbitrary code execution.
26 CVE-2018-6551 787 2018-02-02 2020-08-24
7.5
None Remote Low Not required Partial Partial Partial
The malloc implementation in the GNU C Library (aka glibc or libc6), from version 2.24 to 2.26 on powerpc, and only in version 2.26 on i386, did not properly handle malloc calls with arguments close to SIZE_MAX and could return a pointer to a heap region that is smaller than requested, eventually leading to heap corruption.
27 CVE-2018-6485 787 Overflow 2018-02-01 2020-08-24
7.5
None Remote Low Not required Partial Partial Partial
An integer overflow in the implementation of the posix_memalign in memalign functions in the GNU C Library (aka glibc or libc6) 2.26 and earlier could cause these functions to return a pointer to a heap area that is too small, potentially leading to heap corruption.
28 CVE-2017-1000409 119 Overflow 2018-02-01 2019-04-04
6.9
None Local Medium Not required Complete Complete Complete
A buffer overflow in glibc 2.5 (released on September 29, 2006) and can be triggered through the LD_LIBRARY_PATH environment variable. Please note that many versions of glibc are not vulnerable to this issue if patched for CVE-2017-1000366.
29 CVE-2017-1000408 772 2018-02-01 2019-10-03
7.2
None Local Low Not required Complete Complete Complete
A memory leak in glibc 2.1.1 (released on May 24, 1999) can be reached and amplified through the LD_HWCAP_MASK environment variable. Please note that many versions of glibc are not vulnerable to this issue if patched for CVE-2017-1000366.
30 CVE-2017-1000366 119 Exec Code Overflow 2017-06-19 2020-10-15
7.2
None Local Low Not required Complete Complete Complete
glibc contains a vulnerability that allows specially crafted LD_LIBRARY_PATH values to manipulate the heap/stack, causing them to alias, potentially resulting in arbitrary code execution. Please note that additional hardening changes have been made to glibc to prevent manipulation of stack and heap memory but these issues are not directly exploitable, as such they have not been given a CVE. This affects glibc 2.25 and earlier.
31 CVE-2017-17426 190 Overflow 2017-12-05 2017-12-15
6.8
None Remote Medium Not required Partial Partial Partial
The malloc function in the GNU C Library (aka glibc or libc6) 2.26 could return a memory block that is too small if an attempt is made to allocate an object whose size is close to SIZE_MAX, potentially leading to a subsequent heap overflow. This occurs because the per-thread cache (aka tcache) feature enables a code path that lacks an integer overflow check.
32 CVE-2017-16997 426 +Priv 2017-12-18 2020-10-15
9.3
None Remote Medium Not required Complete Complete Complete
elf/dl-load.c in the GNU C Library (aka glibc or libc6) 2.19 through 2.26 mishandles RPATH and RUNPATH containing $ORIGIN for a privileged (setuid or AT_SECURE) program, which allows local users to gain privileges via a Trojan horse library in the current working directory, related to the fillin_rpath and decompose_rpath functions. This is associated with misinterpretion of an empty RPATH/RUNPATH token as the "./" directory. NOTE: this configuration of RPATH/RUNPATH for a privileged program is apparently very uncommon; most likely, no such program is shipped with any common Linux distribution.
33 CVE-2017-15804 119 Overflow 2017-10-22 2018-06-20
7.5
None Remote Low Not required Partial Partial Partial
The glob function in glob.c in the GNU C Library (aka glibc or libc6) before 2.27 contains a buffer overflow during unescaping of user names with the ~ operator.
34 CVE-2017-15671 772 DoS 2017-10-20 2019-10-03
4.3
None Remote Medium Not required None None Partial
The glob function in glob.c in the GNU C Library (aka glibc or libc6) before 2.27, when invoked with GLOB_TILDE, could skip freeing allocated memory when processing the ~ operator with a long user name, potentially leading to a denial of service (memory leak).
35 CVE-2017-15670 119 Overflow 2017-10-20 2018-06-20
7.5
None Remote Low Not required Partial Partial Partial
The GNU C Library (aka glibc or libc6) before 2.27 contains an off-by-one error leading to a heap-based buffer overflow in the glob function in glob.c, related to the processing of home directories using the ~ operator followed by a long string.
36 CVE-2017-12133 416 2017-09-07 2020-07-09
4.3
None Remote Medium Not required None Partial None
Use-after-free vulnerability in the clntudp_call function in sunrpc/clnt_udp.c in the GNU C Library (aka glibc or libc6) before 2.26 allows remote attackers to have unspecified impact via vectors related to error path.
37 CVE-2017-12132 770 2017-08-01 2019-10-03
4.3
None Remote Medium Not required None Partial None
The DNS stub resolver in the GNU C Library (aka glibc or libc6) before version 2.26, when EDNS support is enabled, will solicit large UDP responses from name servers, potentially simplifying off-path DNS spoofing attacks due to IP fragmentation.
38 CVE-2017-8804 502 DoS 2017-05-07 2020-08-26
7.8
None Remote Low Not required None None Complete
** DISPUTED ** The xdr_bytes and xdr_string functions in the GNU C Library (aka glibc or libc6) 2.25 mishandle failures of buffer deserialization, which allows remote attackers to cause a denial of service (virtual memory allocation, or memory consumption if an overcommit setting is not used) via a crafted UDP packet to port 111, a related issue to CVE-2017-8779. NOTE: [Information provided from upstream and references]
39 CVE-2016-10739 20 2019-01-21 2019-08-06
4.6
None Local Low Not required Partial Partial Partial
In the GNU C Library (aka glibc or libc6) through 2.28, the getaddrinfo function would successfully parse a string that contained an IPv4 address followed by whitespace and arbitrary characters, which could lead applications to incorrectly assume that it had parsed a valid string, without the possibility of embedded HTTP headers or other potentially dangerous substrings.
40 CVE-2016-10228 20 DoS 2017-03-02 2021-02-25
4.3
None Remote Medium Not required None None Partial
The iconv program in the GNU C Library (aka glibc or libc6) 2.31 and earlier, when invoked with multiple suffixes in the destination encoding (TRANSLATE or IGNORE) along with the -c option, enters an infinite loop when processing invalid multi-byte input sequences, leading to a denial of service.
41 CVE-2016-6323 284 DoS 2016-10-07 2018-10-30
5.0
None Remote Low Not required None None Partial
The makecontext function in the GNU C Library (aka glibc or libc6) before 2.25 creates execution contexts incompatible with the unwinder on ARM EABI (32-bit) platforms, which might allow context-dependent attackers to cause a denial of service (hang), as demonstrated by applications compiled using gccgo, related to backtrace generation.
42 CVE-2016-5417 399 DoS 2017-02-17 2017-02-17
5.0
None Remote Low Not required None None Partial
Memory leak in the __res_vinit function in the IPv6 name server management code in libresolv in GNU C Library (aka glibc or libc6) before 2.24 allows remote attackers to cause a denial of service (memory consumption) by leveraging partial initialization of internal resolver data structures.
43 CVE-2016-4429 787 DoS Overflow 2016-06-10 2020-06-28
4.3
None Remote Medium Not required None None Partial
Stack-based buffer overflow in the clntudp_call function in sunrpc/clnt_udp.c in the GNU C Library (aka glibc or libc6) allows remote servers to cause a denial of service (crash) or possibly unspecified other impact via a flood of crafted ICMP and UDP packets.
44 CVE-2016-3706 20 DoS Overflow 2016-06-10 2020-10-29
5.0
None Remote Low Not required None None Partial
Stack-based buffer overflow in the getaddrinfo function in sysdeps/posix/getaddrinfo.c in the GNU C Library (aka glibc or libc6) allows remote attackers to cause a denial of service (crash) via vectors involving hostent conversion. NOTE: this vulnerability exists because of an incomplete fix for CVE-2013-4458.
45 CVE-2016-3075 119 DoS Overflow 2016-06-01 2018-10-30
5.0
None Remote Low Not required None None Partial
Stack-based buffer overflow in the nss_dns implementation of the getnetbyname function in GNU C Library (aka glibc) before 2.24 allows context-dependent attackers to cause a denial of service (stack consumption and application crash) via a long name.
46 CVE-2016-1234 119 DoS Overflow 2016-06-01 2019-05-31
5.0
None Remote Low Not required None None Partial
Stack-based buffer overflow in the glob implementation in GNU C Library (aka glibc) before 2.24, when GLOB_ALTDIRFUNC is used, allows context-dependent attackers to cause a denial of service (crash) via a long name.
47 CVE-2015-8985 19 DoS 2017-03-20 2020-03-31
4.3
None Remote Medium Not required None None Partial
The pop_fail_stack function in the GNU C Library (aka glibc or libc6) allows context-dependent attackers to cause a denial of service (assertion failure and application crash) via vectors related to extended regular expression processing.
48 CVE-2015-8984 125 DoS 2017-03-20 2017-03-22
4.3
None Remote Medium Not required None None Partial
The fnmatch function in the GNU C Library (aka glibc or libc6) before 2.22 might allow context-dependent attackers to cause a denial of service (application crash) via a malformed pattern, which triggers an out-of-bounds read.
49 CVE-2015-8983 190 DoS Exec Code Overflow 2017-03-20 2017-03-22
6.8
None Remote Medium Not required Partial Partial Partial
Integer overflow in the _IO_wstr_overflow function in libio/wstrops.c in the GNU C Library (aka glibc or libc6) before 2.22 allows context-dependent attackers to cause a denial of service (application crash) or possibly execute arbitrary code via vectors related to computing a size in bytes, which triggers a heap-based buffer overflow.
50 CVE-2015-8982 190 DoS Exec Code Overflow 2017-03-15 2017-03-17
6.8
None Remote Medium Not required Partial Partial Partial
Integer overflow in the strxfrm function in the GNU C Library (aka glibc or libc6) before 2.21 allows context-dependent attackers to cause a denial of service (crash) or possibly execute arbitrary code via a long string, which triggers a stack-based buffer overflow.
Total number of vulnerabilities : 124   Page : 1 (This Page)2 3
CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site. OVAL is a registered trademark of The MITRE Corporation and the authoritative source of OVAL content is MITRE's OVAL web site.
Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.