A hiredis, hiredis-py security update has been released for Gentoo Linux.

GLSA 202210-32 : hiredis, hiredis-py: Multiple Vulnerabilities

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 202210-32
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  https://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Severity: Normal
Title: hiredis, hiredis-py: Multiple Vulnerabilities
Date: October 31, 2022
Bugs: #873079, #816318
ID: 202210-32

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

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.

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

Description
==========
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.

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

Workaround
=========
There is no known workaround at this time.

Resolution
=========
All hiredis users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">?v-libs/hiredis-1.0.1"

All hiredis-py users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">?v-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

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.

License
======
Copyright 2022 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

  https://creativecommons.org/licenses/by-sa/2.5