Ubuntu.comUB:CVE-2019-11191CVE-2019-11191
2.5 Low
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
1.9 Low
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:M/Au:N/C:P/I:N/A:N
0.0004 Low
EPSS
Percentile
5.3%
DISPUTED 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.
Bugs
Notes
| Author | Note |
|---|---|
| tyhicks | This only affects i386 Ubuntu kernels. Additionally, it is very unlikely that systems will have a setuid a.out program installed. |
| sbeattie | configuration changes to disable i386 a.out support are in progress. |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | linux | < 4.15.0-51.55 | UNKNOWN |
| ubuntu | 18.10 | noarch | linux | < 4.18.0-21.22 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux | < 4.4.0-150.176 | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-aws | < 4.15.0-1040.42 | UNKNOWN |
| ubuntu | 18.10 | noarch | linux-aws | < 4.18.0-1017.19 | UNKNOWN |
| ubuntu | 14.04 | noarch | linux-aws | < 4.4.0-1045.48) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-aws | < 4.4.0-1084.94 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-aws-hwe | < 4.15.0-1040.42~16.04.1 | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-azure | < 4.18.0-1019.19~18.04.1 | UNKNOWN |
| ubuntu | 18.10 | noarch | linux-azure | < 4.18.0-1019.19 | UNKNOWN |
References
launchpad.net/bugs/cve/CVE-2019-11191
nvd.nist.gov/vuln/detail/CVE-2019-11191
security-tracker.debian.org/tracker/CVE-2019-11191
ubuntu.com/security/notices/USN-4006-1
ubuntu.com/security/notices/USN-4006-2
ubuntu.com/security/notices/USN-4007-1
ubuntu.com/security/notices/USN-4007-2
ubuntu.com/security/notices/USN-4008-1
ubuntu.com/security/notices/USN-4008-3
www.cve.org/CVERecord?id=CVE-2019-11191
www.openwall.com/lists/oss-security/2019/04/03/4
www.openwall.com/lists/oss-security/2019/04/03/4/1
Related
2.5 Low
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
1.9 Low
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:M/Au:N/C:P/I:N/A:N
0.0004 Low
EPSS
Percentile
5.3%