Debian DSA-5234-1 : fish - security update

high Nessus Plugin ID 165328

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Synopsis

The remote Debian host is missing a security-related update.

Description

The remote Debian 11 host has packages installed that are affected by a vulnerability as referenced in the dsa-5234 advisory.

- fish is a command line shell. fish version 3.1.0 through version 3.3.1 is vulnerable to arbitrary code execution. git repositories can contain per-repository configuration that change the behavior of git, including running arbitrary commands. When using the default configuration of fish, changing to a directory automatically runs `git` commands in order to display information about the current repository in the prompt. If an attacker can convince a user to change their current directory into one controlled by the attacker, such as on a shared file system or extracted archive, fish will run arbitrary commands under the attacker's control. This problem has been fixed in fish 3.4.0. Note that running git in these directories, including using the git tab completion, remains a potential trigger for this issue. As a workaround, remove the `fish_git_prompt` function from the prompt. (CVE-2022-20001)

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

Solution

Upgrade the fish packages.

For the stable distribution (bullseye), this problem has been fixed in version 3.1.2-3+deb11u1.

See Also

https://security-tracker.debian.org/tracker/source-package/fish

https://www.debian.org/security/2022/dsa-5234

https://security-tracker.debian.org/tracker/CVE-2022-20001

https://packages.debian.org/source/bullseye/fish

Plugin Details

Severity: High

ID: 165328

File Name: debian_DSA-5234.nasl

Version: 1.2

Type: local

Agent: unix

Published: 9/22/2022

Updated: 9/22/2022

Supported Sensors: Frictionless Assessment Agent, Nessus Agent

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS Score Source: CVE-2022-20001

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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

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

Vulnerability Information

CPE: cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*, p-cpe:2.3:a:debian:debian_linux:fish:*:*:*:*:*:*:*, p-cpe:2.3:a:debian:debian_linux:fish-common:*:*:*:*:*:*:*

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 9/21/2022

Vulnerability Publication Date: 3/14/2022

Reference Information

CVE: CVE-2022-20001