Vulnerability Details : CVE-2019-11191
Potential exploit
The Linux kernel through 5.0.7, when CONFIG_IA32_AOUT is enabled and ia32_aout is loaded, allows local users to bypass ASLR on setuid a.out programs (if any exist) because install_exec_creds() is called too late in load_aout_binary() in fs/binfmt_aout.c, and thus the ptrace_may_access() check has a race condition when reading /proc/pid/stat. NOTE: the software maintainer disputes that this is a vulnerability because ASLR for a.out format executables has never been supported
Products affected by CVE-2019-11191
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-11191
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 19 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-11191
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
1.9
|
LOW | AV:L/AC:M/Au:N/C:P/I:N/A:N |
3.4
|
2.9
|
NIST | |
2.5
|
LOW | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N |
1.0
|
1.4
|
NIST |
CWE ids for CVE-2019-11191
-
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-11191
-
https://usn.ubuntu.com/4007-1/
USN-4007-1: Linux kernel vulnerability | Ubuntu security notices
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https://usn.ubuntu.com/4008-1/
USN-4008-1: Linux kernel vulnerabilities | Ubuntu security notices
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http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html
[security-announce] openSUSE-SU-2019:1570-1: important: Security update
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https://usn.ubuntu.com/4007-2/
USN-4007-2: Linux kernel (HWE) vulnerability | Ubuntu security notices
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https://usn.ubuntu.com/4006-1/
USN-4006-1: Linux kernel vulnerability | Ubuntu security notices
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https://www.openwall.com/lists/oss-security/2019/04/03/4
oss-security - Linux kernel < 4.8 local generic ASLR bypass for setuid binariesMailing List;Exploit;Third Party Advisory
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http://www.openwall.com/lists/oss-security/2019/04/18/5
oss-security - Re: Linux kernel < 4.8 local generic ASLR - another CVE-IDMailing List;Third Party Advisory
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https://usn.ubuntu.com/4006-2/
USN-4006-2: Linux kernel (HWE) vulnerability | Ubuntu security notices
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https://usn.ubuntu.com/4008-3/
USN-4008-3: Linux kernel (Xenial HWE) vulnerabilities | Ubuntu security notices
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http://www.openwall.com/lists/oss-security/2019/05/22/7
oss-security - Re: Linux kernel < 4.8 local generic ASLR - another CVE-ID
-
http://www.securityfocus.com/bid/107887
Linux Kernel CVE-2019-11191 Local Security Bypass VulnerabilityThird Party Advisory;VDB Entry
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https://www.openwall.com/lists/oss-security/2019/04/03/4/1
Mailing List;Exploit;Third Party Advisory
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