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

high Nessus Plugin ID 166737

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Description

The remote host is affected by the vulnerability described in GLSA-202210-32 (hiredis, hiredis-py: Multiple Vulnerabilities)

- Hiredis is a minimalistic C client library for the Redis database. In affected versions Hiredis is vulnurable 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. Users of hiredis who are unable to update may set the [maxelements](https://github.com/redis/hiredis#reader-max- array-elements) context option to a value small enough that no overflow is possible. (CVE-2021-32765)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

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

Plugin Details

Severity: High

ID: 166737

File Name: gentoo_GLSA-202210-32.nasl

Version: 1.2

Type: local

Family: Gentoo Local Security Checks

Published: 10/31/2022

Updated: 10/31/2022

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 4.8

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P

CVSS Score Source: CVE-2021-32765

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:hiredis, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Exploit Ease: No known exploits are available

Patch Publication Date: 10/31/2022

Vulnerability Publication Date: 10/4/2021

Reference Information

CVE: CVE-2021-32765

Detections

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