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Gentoo: GLSA-201701-11 Normal: Musl Integer Overflow Risk

gentoo
Calendar Grey January 2, 2017
Dist Gentoo Esm H88
Gentoo GLSA 202103-15 highlights a buffer overflow in libfoo, potentially enabling privilege escalation, advise immediate patching.
An integer overflow in musl might allow an attacker to execute arbitrary code.

Summary

A vulnerability was discovered in musl's tre_tnfa_run_parallel function buffer overflow logic, due to the incorrect use of integer types and missing overflow checks.

Topics%20covered

Topics Covered

security advisory gentoo code execution integer overflow attack risk normal musl

Resolution

All musl users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=sys-libs/musl-1.1.15-r2"

References

[ 1 ] CVE-2016-8859 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-8859

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201701-11
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Concerns

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

Severity: Normal
Title: musl: Integer overflow
Date: January 02, 2017
Bugs: #597498
ID: 201701-11

Topics%20covered

Topics Covered

security advisory gentoo code execution integer overflow attack risk normal musl

Synopsis

An integer overflow in musl might allow an attacker to execute arbitrary code.

Background

musl is a "libc", an implementation of the standard library functionality described in the ISO C and POSIX standards, plus common extensions, intended for use on Linux-based systems.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 sys-libs/musl < 1.1.15-r2 >= 1.1.15-r2

Impact

===== An attacker, who controls the regular expression and/or string being searched, could execute arbitrary code with the privileges of the process.

Workaround

There is no known workaround at this time.

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