CVE-2019-11191

 

Published at: - 12-04-2019 02:29

Last modified: - 26-10-2022 01:44

Total changes: - 3

Description

** 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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

 

Verification logic

 

Reference

• https://www.openwall.com/lists/oss-security/2019/04/03/4/1
• https://www.openwall.com/lists/oss-security/2019/04/03/4
• 107887-Third Party Advisory, VDB Entry
• [oss-security] 20190418 Re: Linux kernel < 4.8 local generic ASLR - another CVE-ID-Mailing List, Third Party Advisory
• [oss-security] 20190522 Re: Linux kernel < 4.8 local generic ASLR - another CVE-ID-
• USN-4008-1-
• USN-4007-2-
• USN-4007-1-
• USN-4006-2-
• USN-4006-1-
• USN-4008-3-
• openSUSE-SU-2019:1570-

 

Keywords

NVD

 

CVE-2019-11191

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures