Bug 2064331 (CVE-2022-20001)

Summary: CVE-2022-20001 fish: Arbitrary Code Execution
Product: [Other] Security Response Reporter: Patrick Del Bello <pdelbell>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED UPSTREAM QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: igor.raits, luto, oliver, oliver, svashisht
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Last Closed: 2022-03-15 21:46:16 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 2064332    
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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.