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Arch Linux: AL-202103-55 Critical Warning: Memory Exploit in Code Analyzer

gentoo
Calendar Grey March 19, 2020
Dist Gentoo Esm H88
Memory overflow found in Binary difference tool allows Gentoo to face remote code execution risks. Users are advised to upgrade immediately.
A heap-based buffer overflow in Binary diff might allow remote attackers to execute arbitrary code.

Summary

It was discovered that the implementation of bspatch did not check for a negative value on numbers of bytes read from the diff and extra streams.

Topics%20covered

Topics Covered

security advisory high severity gentoo remote code execution heap overflow

Resolution

All Binary diff users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=dev-util/bsdiff-4.3-r4"

References

[ 1 ] CVE-2014-9862 https://nvd.nist.gov/vuln/detail/CVE-2014-9862

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/202003-44
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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: High
Title: Binary diff: Heap-based buffer overflow
Date: March 19, 2020
Bugs: #701848
ID: 202003-44

Topics%20covered

Topics Covered

security advisory high severity gentoo remote code execution heap overflow

Synopsis

A heap-based buffer overflow in Binary diff might allow remote attackers to execute arbitrary code.

Background

bsdiff and bspatch are tools for building and applying patches to binary files.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-util/bsdiff < 4.3-r4 >= 4.3-r4

Impact

===== A remote attacker could entice a user to apply a specially crafted patch using bspatch, possibly resulting in execution of arbitrary code with the privileges of the process or a Denial of Service condition.

Workaround

There is no known workaround at this time.

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