Bug 2064331 (CVE-2022-20001)

Summary:	CVE-2022-20001 fish: Arbitrary Code Execution
Product:	[Other] Security Response	Reporter:	Patrick Del Bello <pdelbell>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	igor.raits, luto, oliver, oliver, svashisht
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-03-15 21:46:16 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2064332
Bug Blocks:

Description Patrick Del Bello 2022-03-15 14:50:05 UTC

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.


https://github.com/fish-shell/fish-shell/pull/8589
https://github.com/fish-shell/fish-shell/security/advisories/GHSA-pj5f-6vxj-f5mq
https://github.com/fish-shell/fish-shell/releases/tag/3.4.0

Comment 1 Patrick Del Bello 2022-03-15 14:50:21 UTC

Created fish tracking bugs for this issue:

Affects: fedora-all [bug 2064332]

Comment 2 Product Security DevOps Team 2022-03-15 21:46:15 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.