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Openbsd : Security Vulnerabilities (Denial Of Service)

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# 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-2014-1692 119 DoS Overflow Mem. Corr. 2014-01-29 2014-02-06
7.5
None Remote Low Not required Partial Partial Partial
The hash_buffer function in schnorr.c in OpenSSH through 6.4, when Makefile.inc is modified to enable the J-PAKE protocol, does not initialize certain data structures, which might allow remote attackers to cause a denial of service (memory corruption) or have unspecified other impact via vectors that trigger an error condition.
2 CVE-2013-2125 310 DoS 2014-05-27 2014-05-28
5.0
None Remote Low Not required None None Partial
OpenSMTPD before 5.3.2 does not properly handle SSL sessions, which allows remote attackers to cause a denial of service (connection blocking) by keeping a connection open.
3 CVE-2011-5000 189 DoS 2012-04-05 2012-07-21
3.5
None Remote Medium Single system None None Partial
The ssh_gssapi_parse_ename function in gss-serv.c in OpenSSH 5.8 and earlier, when gssapi-with-mic authentication is enabled, allows remote authenticated users to cause a denial of service (memory consumption) via a large value in a certain length field. NOTE: there may be limited scenarios in which this issue is relevant.
4 CVE-2011-1013 189 DoS 2011-05-09 2012-03-19
7.2
None Local Low Not required Complete Complete Complete
Integer signedness error in the drm_modeset_ctl function in (1) drivers/gpu/drm/drm_irq.c in the Direct Rendering Manager (DRM) subsystem in the Linux kernel before 2.6.38 and (2) sys/dev/pci/drm/drm_irq.c in the kernel in OpenBSD before 4.9 allows local users to trigger out-of-bounds write operations, and consequently cause a denial of service (system crash) or possibly have unspecified other impact, via a crafted num_crtcs (aka vb_num) structure member in an ioctl argument.
5 CVE-2011-0419 399 DoS 2011-05-16 2013-11-15
4.3
None Remote Medium Not required None None Partial
Stack consumption vulnerability in the fnmatch implementation in apr_fnmatch.c in the Apache Portable Runtime (APR) library before 1.4.3 and the Apache HTTP Server before 2.2.18, and in fnmatch.c in libc in NetBSD 5.1, OpenBSD 4.8, FreeBSD, Apple Mac OS X 10.6, Oracle Solaris 10, and Android, allows context-dependent attackers to cause a denial of service (CPU and memory consumption) via *? sequences in the first argument, as demonstrated by attacks against mod_autoindex in httpd.
6 CVE-2010-5107 DoS 2013-03-07 2014-01-13
5.0
None Remote Low Not required None None Partial
The default configuration of OpenSSH through 6.1 enforces a fixed time limit between establishing a TCP connection and completing a login, which makes it easier for remote attackers to cause a denial of service (connection-slot exhaustion) by periodically making many new TCP connections.
7 CVE-2010-4755 399 DoS 2011-03-02 2014-08-08
4.0
None Remote Low Single system None None Partial
The (1) remote_glob function in sftp-glob.c and the (2) process_put function in sftp.c in OpenSSH 5.8 and earlier, as used in FreeBSD 7.3 and 8.1, NetBSD 5.0.2, OpenBSD 4.7, and other products, allow remote authenticated users to cause a denial of service (CPU and memory consumption) via crafted glob expressions that do not match any pathnames, as demonstrated by glob expressions in SSH_FXP_STAT requests to an sftp daemon, a different vulnerability than CVE-2010-2632.
8 CVE-2010-4754 399 DoS 2011-03-02 2011-09-21
4.0
None Remote Low Single system None None Partial
The glob implementation in libc in FreeBSD 7.3 and 8.1, NetBSD 5.0.2, and OpenBSD 4.7, and Libsystem in Apple Mac OS X before 10.6.8, allows remote authenticated users to cause a denial of service (CPU and memory consumption) via crafted glob expressions that do not match any pathnames, as demonstrated by glob expressions in STAT commands to an FTP daemon, a different vulnerability than CVE-2010-2632.
9 CVE-2009-3572 DoS 2009-10-06 2009-10-08
4.9
None Local Low Not required None None Complete
OpenBSD 4.4, 4.5, and 4.6, when running on an i386 kernel, does not properly handle XMM exceptions, which allows local users to cause a denial of service (kernel panic) via unspecified vectors.
10 CVE-2009-0780 DoS 2009-03-04 2010-04-27
5.0
None Remote Low Not required None None Partial
The aspath_prepend function in rde_attr.c in bgpd in OpenBSD 4.3 and 4.4 allows remote attackers to cause a denial of service (application crash) via an Autonomous System (AS) advertisement containing a long AS path.
11 CVE-2009-0689 119 DoS Exec Code Overflow 2009-07-01 2014-03-25
6.8
User Remote Medium Not required Partial Partial Partial
Array index error in the (1) dtoa implementation in dtoa.c (aka pdtoa.c) and the (2) gdtoa (aka new dtoa) implementation in gdtoa/misc.c in libc, as used in multiple operating systems and products including in FreeBSD 6.4 and 7.2, NetBSD 5.0, OpenBSD 4.5, Mozilla Firefox 3.0.x before 3.0.15 and 3.5.x before 3.5.4, K-Meleon 1.5.3, SeaMonkey 1.1.8, and other products, allows context-dependent attackers to cause a denial of service (application crash) and possibly execute arbitrary code via a large precision value in the format argument to a printf function, which triggers incorrect memory allocation and a heap-based buffer overflow during conversion to a floating-point number.
12 CVE-2009-0687 399 2 DoS 2009-08-11 2009-08-11
7.8
None Remote Low Not required None None Complete
The pf_test_rule function in OpenBSD Packet Filter (PF), as used in OpenBSD 4.2 through 4.5, NetBSD 5.0 before RC3, MirOS 10 and earlier, and MidnightBSD 0.3-current allows remote attackers to cause a denial of service (panic) via crafted IP packets that trigger a NULL pointer dereference during translation, related to an IPv4 packet with an ICMPv6 payload.
13 CVE-2009-0537 189 1 DoS Overflow 2009-03-09 2009-03-21
4.9
None Local Low Not required None None Complete
Integer overflow in the fts_build function in fts.c in libc in (1) OpenBSD 4.4 and earlier and (2) Microsoft Interix 6.0 build 10.0.6030.0 allows context-dependent attackers to cause a denial of service (application crash) via a deep directory tree, related to the fts_level structure member, as demonstrated by (a) du, (b) rm, (c) chmod, and (d) chgrp on OpenBSD; and (e) SearchIndexer.exe on Vista Enterprise.
14 CVE-2008-4609 16 DoS 2008-10-20 2013-10-10
7.1
None Remote Medium Not required None None Complete
The TCP implementation in (1) Linux, (2) platforms based on BSD Unix, (3) Microsoft Windows, (4) Cisco products, and probably other operating systems allows remote attackers to cause a denial of service (connection queue exhaustion) via multiple vectors that manipulate information in the TCP state table, as demonstrated by sockstress.
15 CVE-2008-4109 264 DoS 2008-09-18 2009-02-12
5.0
None Remote Low Not required None None Partial
A certain Debian patch for OpenSSH before 4.3p2-9etch3 on etch; before 4.6p1-1 on sid and lenny; and on other distributions such as SUSE uses functions that are not async-signal-safe in the signal handler for login timeouts, which allows remote attackers to cause a denial of service (connection slot exhaustion) via multiple login attempts. NOTE: this issue exists because of an incorrect fix for CVE-2006-5051.
16 CVE-2008-2476 20 DoS 2008-10-03 2012-10-29
9.3
None Remote Medium Not required Complete Complete Complete
The IPv6 Neighbor Discovery Protocol (NDP) implementation in (1) FreeBSD 6.3 through 7.1, (2) OpenBSD 4.2 and 4.3, (3) NetBSD, (4) Force10 FTOS before E7.7.1.1, (5) Juniper JUNOS, and (6) Wind River VxWorks 5.x through 6.4 does not validate the origin of Neighbor Discovery messages, which allows remote attackers to cause a denial of service (loss of connectivity) or read private network traffic via a spoofed message that modifies the Forward Information Base (FIB).
17 CVE-2008-1058 DoS 2008-02-28 2008-09-05
7.8
None Remote Low Not required None None Complete
The tcp_respond function in netinet/tcp_subr.c in OpenBSD 4.1 and 4.2 allows attackers to cause a denial of service (panic) via crafted TCP packets. NOTE: some of these details are obtained from third party information.
18 CVE-2008-1057 DoS 2008-02-28 2008-09-05
7.8
None Remote Low Not required None None Complete
The ip6_check_rh0hdr function in netinet6/ip6_input.c in OpenBSD 4.2 allows attackers to cause a denial of service (panic) via malformed IPv6 routing headers.
19 CVE-2008-0384 1 DoS 2008-01-22 2008-09-05
4.9
None Local Low Not required None None Complete
OpenBSD 4.2 allows local users to cause a denial of service (kernel panic) by calling the SIOCGIFRTLABEL IOCTL on an interface that does not have a route label, which triggers a NULL pointer dereference when the return value from the rtlabel_id2name function is not checked.
20 CVE-2007-5365 119 1 DoS Exec Code Overflow 2007-10-11 2011-08-02
7.2
None Local Low Not required Complete Complete Complete
Stack-based buffer overflow in the cons_options function in options.c in dhcpd in OpenBSD 4.0 through 4.2, and some other dhcpd implementations based on ISC dhcp-2, allows remote attackers to execute arbitrary code or cause a denial of service (daemon crash) via a DHCP request specifying a maximum message size smaller than the minimum IP MTU.
21 CVE-2007-4654 399 DoS Overflow 2007-09-04 2008-11-15
5.0
None Remote Low Not required None None Partial
Unspecified vulnerability in SSHield 1.6.1 with OpenSSH 3.0.2p1 on Cisco WebNS 8.20.0.1 on Cisco Content Services Switch (CSS) series 11000 devices allows remote attackers to cause a denial of service (connection slot exhaustion and device crash) via a series of large packets designed to exploit the SSH CRC32 attack detection overflow (CVE-2001-0144), possibly a related issue to CVE-2002-1024.
22 CVE-2007-1365 DoS Exec Code Overflow 2007-03-10 2008-09-05
10.0
Admin Remote Low Not required Complete Complete Complete
Buffer overflow in kern/uipc_mbuf2.c in OpenBSD 3.9 and 4.0 allows remote attackers to execute arbitrary code via fragmented IPv6 packets due to "incorrect mbuf handling for ICMP6 packets." NOTE: this was originally reported as a denial of service.
23 CVE-2007-0343 DoS 2007-01-17 2008-09-05
5.0
None Remote Low Not required None None Partial
OpenBSD before 20070116 allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via certain IPv6 ICMP (aka ICMP6) echo request packets.
24 CVE-2006-5550 DoS 2006-10-26 2008-09-05
4.9
None Local Low Not required None None Complete
The kernel in FreeBSD 6.1 and OpenBSD 4.0 allows local users to cause a denial of service via unspecified vectors involving certain ioctl requests to /dev/crypto.
25 CVE-2006-5218 DoS Overflow +Priv 2006-10-10 2008-09-05
4.6
User Local Low Not required Partial Partial Partial
Integer overflow in the systrace_preprepl function (STRIOCREPLACE) in systrace in OpenBSD 3.9 and NetBSD 3 allows local users to cause a denial of service (crash), gain privileges, or read arbitrary kernel memory via large numeric arguments to the systrace ioctl.
26 CVE-2006-5051 362 DoS Exec Code 2006-09-27 2011-08-08
9.3
Admin Remote Medium Not required Complete Complete Complete
Signal handler race condition in OpenSSH before 4.4 allows remote attackers to cause a denial of service (crash), and possibly execute arbitrary code if GSSAPI authentication is enabled, via unspecified vectors that lead to a double-free.
27 CVE-2006-4925 DoS 2006-09-28 2010-09-15
5.0
None Remote Low Not required None None Partial
packet.c in ssh in OpenSSH allows remote attackers to cause a denial of service (crash) by sending an invalid protocol sequence with USERAUTH_SUCCESS before NEWKEYS, which causes newkeys[mode] to be NULL.
28 CVE-2006-4924 399 DoS 2006-09-26 2013-09-02
7.8
None Remote Low Not required None None Complete
sshd in OpenSSH before 4.4, when using the version 1 SSH protocol, allows remote attackers to cause a denial of service (CPU consumption) via an SSH packet that contains duplicate blocks, which is not properly handled by the CRC compensation attack detector.
29 CVE-2006-4435 DoS 2006-08-28 2008-09-05
4.9
None Local Low Not required None None Complete
OpenBSD 3.8, 3.9, and possibly earlier versions allows context-dependent attackers to cause a denial of service (kernel panic) by allocating more semaphores than the default.
30 CVE-2006-4304 DoS Exec Code Overflow +Info 2006-08-23 2008-09-05
10.0
Admin Remote Low Not required Complete Complete Complete
Buffer overflow in the sppp driver in FreeBSD 4.11 through 6.1, NetBSD 2.0 through 4.0 beta before 20060823, and OpenBSD 3.8 and 3.9 before 20060902 allows remote attackers to cause a denial of service (panic), obtain sensitive information, and possibly execute arbitrary code via crafted Link Control Protocol (LCP) packets with an option length that exceeds the overall length, which triggers the overflow in (1) pppoe and (2) ippp. NOTE: this issue was originally incorrectly reported for the ppp driver.
31 CVE-2006-0883 399 DoS 2006-03-06 2011-08-26
5.0
None Remote Low Not required None None Partial
OpenSSH on FreeBSD 5.3 and 5.4, when used with OpenPAM, does not properly handle when a forked child process terminates during PAM authentication, which allows remote attackers to cause a denial of service (client connection refusal) by connecting multiple times to the SSH server, waiting for the password prompt, then disconnecting.
32 CVE-2005-0960 DoS 2005-05-02 2008-09-05
5.0
None Remote Low Not required None None Partial
Multiple vulnerabilities in the SACK functionality in (1) tcp_input.c and (2) tcp_usrreq.c OpenBSD 3.5 and 3.6 allow remote attackers to cause a denial of service (memory exhaustion or system crash).
33 CVE-2005-0740 DoS 2005-01-13 2008-09-05
5.0
None Remote Low Not required None None Partial
The TCP stack (tcp_input.c) in OpenBSD 3.5 and 3.6 allows remote attackers to cause a denial of service (system panic) via crafted values in the TCP timestamp option, which causes invalid arguments to be used when calculating the retransmit timeout.
34 CVE-2005-0356 DoS 2005-05-31 2008-09-05
5.0
None Remote Low Not required None None Partial
Multiple TCP implementations with Protection Against Wrapped Sequence Numbers (PAWS) with the timestamps option enabled allow remote attackers to cause a denial of service (connection loss) via a spoofed packet with a large timer value, which causes the host to discard later packets because they appear to be too old.
35 CVE-2004-2230 DoS Overflow 2004-12-31 2008-09-05
2.1
None Local Low Not required None None Partial
Heap-based buffer overflow in isakmpd on OpenBSD 3.4 through 3.6 allows local users to cause a denial of service (panic) and corrupt memory via IPSEC credentials on a socket.
36 CVE-2004-2069 DoS 2004-12-31 2010-08-21
5.0
None Remote Low Not required None None Partial
sshd.c in OpenSSH 3.6.1p2 and 3.7.1p2 and possibly other versions, when using privilege separation, does not properly signal the non-privileged process when a session has been terminated after exceeding the LoginGraceTime setting, which leaves the connection open and allows remote attackers to cause a denial of service (connection consumption).
37 CVE-2004-1471 DoS Exec Code 2004-12-31 2008-09-05
7.1
Admin Remote High Single system Complete Complete Complete
Format string vulnerability in wrapper.c in CVS 1.12.x through 1.12.8, and 1.11.x through 1.11.16 allows remote attackers with CVSROOT commit access to cause a denial of service (application crash) and possibly execute arbitrary code via format string specifiers in a wrapper line.
38 CVE-2004-0819 DoS 2004-08-25 2008-09-05
5.0
None Remote Low Not required None None Partial
The bridge functionality in OpenBSD 3.4 and 3.5, when running a gateway configured as a bridging firewall with the link2 option for IPSec enabled, allows remote attackers to cause a denial of service (crash) via an ICMP echo (ping) packet.
39 CVE-2004-0492 DoS Exec Code Overflow 2004-08-06 2011-09-06
10.0
Admin Remote Low Not required Complete Complete Complete
Heap-based buffer overflow in proxy_util.c for mod_proxy in Apache 1.3.25 to 1.3.31 allows remote attackers to cause a denial of service (process crash) and possibly execute arbitrary code via a negative Content-Length HTTP header field, which causes a large amount of data to be copied.
40 CVE-2004-0414 DoS Exec Code 2004-08-06 2010-08-21
10.0
Admin Remote Low Not required Complete Complete Complete
CVS 1.12.x through 1.12.8, and 1.11.x through 1.11.16, does not properly handle malformed "Entry" lines, which prevents a NULL terminator from being used and may lead to a denial of service (crash), modification of critical program data, or arbitrary code execution.
41 CVE-2004-0257 DoS 2004-11-23 2008-09-05
5.0
None Remote Low Not required None None Partial
OpenBSD 3.4 and NetBSD 1.6 and 1.6.1 allow remote attackers to cause a denial of service (crash) by sending an IPv6 packet with a small MTU to a listening port and then issuing a TCP connect to that port.
42 CVE-2004-0222 DoS 2004-05-04 2008-09-05
5.0
None Remote Low Not required None None Partial
Multiple memory leaks in isakmpd in OpenBSD 3.4 and earlier allow remote attackers to cause a denial of service (memory exhaustion) via certain ISAKMP packets, as demonstrated by the Striker ISAKMP Protocol Test Suite.
43 CVE-2004-0221 DoS 2004-05-04 2008-09-05
5.0
None Remote Low Not required None None Partial
isakmpd in OpenBSD 3.4 and earlier allows remote attackers to cause a denial of service (crash) via an ISAKMP packet with a delete payload containing a large number of SPIs, which triggers an out-of-bounds read error, as demonstrated by the Striker ISAKMP Protocol Test Suite.
44 CVE-2004-0220 DoS 2004-05-04 2008-09-05
10.0
None Remote Low Not required Complete Complete Complete
isakmpd in OpenBSD 3.4 and earlier allows remote attackers to cause a denial of service via a an ISAKMP packet with a malformed Cert Request payload, which causes an integer underflow that is used in a malloc operation that is not properly handled, as demonstrated by the Striker ISAKMP Protocol Test Suite.
45 CVE-2004-0219 DoS 2004-05-04 2008-09-10
5.0
None Remote Low Not required None None Partial
isakmpd in OpenBSD 3.4 and earlier allows remote attackers to cause a denial of service (crash) via an ISAKMP packet with a malformed IPSEC SA payload, as demonstrated by the Striker ISAKMP Protocol Test Suite.
46 CVE-2004-0218 DoS 2004-05-04 2008-09-05
5.0
None Remote Low Not required None None Partial
isakmpd in OpenBSD 3.4 and earlier allows remote attackers to cause a denial of service (infinite loop) via an ISAKMP packet with a zero-length payload, as demonstrated by the Striker ISAKMP Protocol Test Suite.
47 CVE-2004-0171 DoS 2004-03-15 2008-09-05
5.0
None Remote Low Not required None None Partial
FreeBSD 5.1 and earlier, and Mac OS X before 10.3.4, allows remote attackers to cause a denial of service (resource exhaustion of memory buffers and system crash) via a large number of out-of-sequence TCP packets, which prevents the operating system from creating new connections.
48 CVE-2004-0112 DoS 2004-11-23 2010-08-21
5.0
None Remote Low Not required None None Partial
The SSL/TLS handshaking code in OpenSSL 0.9.7a, 0.9.7b, and 0.9.7c, when using Kerberos ciphersuites, does not properly check the length of Kerberos tickets during a handshake, which allows remote attackers to cause a denial of service (crash) via a crafted SSL/TLS handshake that causes an out-of-bounds read.
49 CVE-2004-0081 DoS 2004-11-23 2010-08-21
5.0
None Remote Low Not required None None Partial
OpenSSL 0.9.6 before 0.9.6d does not properly handle unknown message types, which allows remote attackers to cause a denial of service (infinite loop), as demonstrated using the Codenomicon TLS Test Tool.
50 CVE-2004-0079 DoS 2004-11-23 2010-08-21
5.0
None Remote Low Not required None None Partial
The do_change_cipher_spec function in OpenSSL 0.9.6c to 0.9.6k, and 0.9.7a to 0.9.7c, allows remote attackers to cause a denial of service (crash) via a crafted SSL/TLS handshake that triggers a null dereference.
Total number of vulnerabilities : 75   Page : 1 (This Page)2
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