CVE-2019-11191
low-risk
Published 2019-04-12
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
Do I need to act?
-
0.01% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
2
CVSS 2.5/10
Low
LOCAL
/ HIGH complexity
Affected Products (1)
Affected Vendors
References (24)
Third Party Advisory
http://www.securityfocus.com/bid/107887
Third Party Advisory
http://www.securityfocus.com/bid/107887
and 4 more references
11
/ 100
low-risk
Severity
6/34 · Minimal
Exploitability
0/34 · Minimal
Exposure
5/34 · Minimal