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Alpine: rsyslog: security update to 8.2012.0-r3

high Tenable Self-Hosted Container Security Plugin ID 406957

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - Rsyslog is a rocket-fast system for log processing. Modules for TCP syslog reception have a potential heap
 buffer overflow when octet-counted framing is used. This can result in a segfault or some other
 malfunction. As of our understanding, this vulnerability can not be used for remote code execution. But
 there may still be a slight chance for experts to do that. The bug occurs when the octet count is read.
 While there is a check for the maximum number of octets, digits are written to a heap buffer even when the
 octet count is over the maximum, This can be used to overrun the memory buffer. However, once the sequence
 of digits stop, no additional characters can be added to the buffer. In our opinion, this makes remote
 exploits impossible or at least highly complex. Octet-counted framing is one of two potential framing
 modes. It is relatively uncommon, but enabled by default on receivers. Modules `imtcp`, `imptcp`,
 `imgssapi`, and `imhttp` are used for regular syslog message reception. It is best practice not to
 directly expose them to the public. When this practice is followed, the risk is considerably lower. Module
 `imdiag` is a diagnostics module primarily intended for testbench runs. We do not expect it to be present
 on any production installation. Octet-counted framing is not very common. Usually, it needs to be
 specifically enabled at senders. If users do not need it, they can turn it off for the most important
 modules. This will mitigate the vulnerability. (CVE-2022-24903)

See Also

https://security.alpinelinux.org/vuln/CVE-2022-24903

Plugin Details

Severity: High

ID: 406957

Version: Revision 1.28

Type: Local

Published: 10/31/2023

Updated: 7/2/2026

Supported Sensors: Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 6.9

Percentile: 97.17

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2022-24903

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 5/5/2022

Reference Information

CVE: CVE-2022-24903