PT-2019-5360 · Linux+4 · Linux Kernel+4

Published 2019-03-05 · Updated 2024-08-04 · CVE-2019-11191

Positive Technologies (AI Summary)

CVSS v3.1

2.5

Low

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions through 5.0.7

Description The issue allows local users to bypass ASLR on setuid a.out programs 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. The software maintainer disputes that this is a vulnerability because ASLR for a.out format executables has never been supported.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Race Condition

Weakness Enumeration

CWE-362

Related Identifiers

ALT-PU-2019-1665

ALT-PU-2019-1710

ALT-PU-2020-1198

ALT-PU-2020-1501

ALT-PU-2020-2410

ALT-PU-2020-2433

ALT-PU-2021-1870

BDU:2020-02567

CVE-2019-11191

ECHO-1FD0-03C0-B9EF

OPENSUSE-SU-2019_1570-1

USN-4006-1

USN-4006-2

USN-4007-1

USN-4007-2

USN-4008-1

USN-4008-3

Affected Products

Alt Linux

Debian

Linux Kernel

Suse

Ubuntu

References · 47

• 🔥 https://openwall.com/lists/oss-security/2019/04/03/4/1 · Exploit
• 🔥 https://openwall.com/lists/oss-security/2019/04/03/4 · Exploit
• https://ubuntu.com/security/notices/USN-4007-2 · Vendor Advisory
• https://osv.dev/vulnerability/USN-4007-1 · Vendor Advisory
• https://usn.ubuntu.com/4007-2 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-4008-3 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-11191 · Vendor Advisory
• https://osv.dev/vulnerability/USN-4007-2 · Vendor Advisory
• https://usn.ubuntu.com/4008-3 · Vendor Advisory
• https://usn.ubuntu.com/4008-1 · Vendor Advisory
• https://osv.dev/vulnerability/USN-4008-1 · Vendor Advisory
• https://osv.dev/vulnerability/USN-4006-2 · Vendor Advisory
• https://usn.ubuntu.com/4007-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-11191 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-4008-1 · Vendor Advisory