Improper access control in Opensuse and Fedora - CVE-2016-6323

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Main Vulnerability Database Vulnerabilities #VU40079

Improper access control in Opensuse and Fedora - CVE-2016-6323

Published: October 7, 2016 / Updated: August 9, 2020


Vulnerability identifier: #VU40079
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2016-6323
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

The makecontext function in the GNU C Library (aka glibc or libc6) before 2.25 creates execution contexts incompatible with the unwinder on ARM EABI (32-bit) platforms, which might allow context-dependent attackers to cause a denial of service (hang), as demonstrated by applications compiled using gccgo, related to backtrace generation.


Affected software

Opensuse
Fedora
Gentoo Linux
glibc
glibc-arm-linux-gnu

How to mitigate CVE-2016-6323

Install update from vendor's website.

glibc - addressed in versions 2.22-18.fc23, 2.23.1-10.fc24, 2.24-3.fc25
glibc-arm-linux-gnu - addressed in versions 2.24-2.fc23, 2.24-2.fc24, 2.24-2.fc25

External References

Related Security Bulletins