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Gentoo: GLSA-202210-32 Normal: Hiredis Code Execution Issue

gentoo
Calendar Grey October 30, 2022
Dist Gentoo Esm H88
Hiredis encounters an integer overflow vulnerability, which may facilitate arbitrary code execution. Please ensure an update to mitigate potential threats.
An integer overflow has been found in hiredis which could result in arbitrary code execution.

Summary

Hiredis is vulnerable to integer overflow if provided maliciously crafted or corrupted `RESP` `mult-bulk` protocol data. When parsing `multi-bulk` (array-like) replies, hiredis fails to check if `count * sizeof(redisReply*)` can be represented in `SIZE_MAX`. If it can not, and the `calloc()` call doesn't itself make this check, it would result in a short allocation and subsequent buffer overflow.

Topics%20covered

Topics Covered

security advisory Gentoo remote code execution integer overflow hiredis

Resolution

All hiredis users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=dev-libs/hiredis-1.0.1"
All hiredis-py users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=dev-python/hiredis-2.0.0"

References

[ 1 ] CVE-2021-32765 https://nvd.nist.gov/vuln/detail/CVE-2021-32765

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/202210-32
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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: hiredis, hiredis-py: Multiple Vulnerabilities
Date: October 31, 2022
Bugs: #873079, #816318
ID: 202210-32

Topics%20covered

Topics Covered

security advisory Gentoo remote code execution integer overflow hiredis

Synopsis

An integer overflow has been found in hiredis which could result in arbitrary code execution.

Background

hiredis is a minimalistic C client library for the Redis database. hiredis-py is a Python extension that wraps hiredis.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-libs/hiredis < 1.0.1 >= 1.0.1 2 dev-python/hiredis < 2.0.0 >= 2.0.0

Impact

===== Malicious Redis commands could result in remote code execution.

Workaround

There is no known workaround at this time.

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