CVE-2022-20001: Injection in fish
First published: Mon Mar 14 2022(Updated: )
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.
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Fishshell Fish | >=3.1.0<=3.3.1 | |
| Fedoraproject Fedora | =35 | |
| Fedoraproject Fedora | =36 | |
| Debian Debian Linux | =11.0 | |
| debian/fish | 3.0.2-2+deb10u1 3.1.2-3+deb11u1 3.6.0-3.1 3.6.1-1 |
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Reference Links
- https://github.com/fish-shell/fish-shell/security/advisories/GHSA-pj5f-6vxj-f5mq
- https://github.com/fish-shell/fish-shell/pull/8589
- https://github.com/fish-shell/fish-shell/commit/37625053d424c1ab88de2b0c50c7fe71e1468e2c
- https://security-tracker.debian.org/tracker/CVE-2022-20001
- https://github.com/fish-shell/fish-shell/releases/tag/3.4.0
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BPZ7JV22DSZB5LNUCUEJ2HO3PKM2TVVK/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TRNMYS2LKB6TKOOBQQRSRQICDMWLZ4QL/
- https://security.gentoo.org/glsa/202309-10
- https://www.debian.org/security/2022/dsa-5234
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TRNMYS2LKB6TKOOBQQRSRQICDMWLZ4QL/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BPZ7JV22DSZB5LNUCUEJ2HO3PKM2TVVK/
Frequently Asked Questions
What is CVE-2022-20001?
CVE-2022-20001 is a vulnerability in the fish command line shell that allows for arbitrary code execution.
How severe is CVE-2022-20001?
CVE-2022-20001 has a severity rating of 7.8 (high).
Which versions of fish are affected by CVE-2022-20001?
Fish version 3.1.0 through version 3.3.1 are affected by CVE-2022-20001.
How can I fix CVE-2022-20001?
To fix CVE-2022-20001, update fish to version 3.6.1-1 or apply the appropriate patches provided by your operating system or distribution.
Where can I find more information about CVE-2022-20001?
You can find more information about CVE-2022-20001 on the GitHub security advisory page: [GitHub Advisory](https://github.com/fish-shell/fish-shell/security/advisories/GHSA-pj5f-6vxj-f5mq)
- collector/security-tracker-debian
- collector/nvd-index
- agent/weakness
- agent/author
- agent/softwarecombine
- agent/type
- agent/remedy
- agent/description
- collector/nvd-api
- agent/software-canonical-lookup-request
- collector/mitre-cve
- source/MITRE
- agent/references
- agent/title
- agent/severity
- agent/last-modified-date
- agent/first-publish-date
- agent/tags
- agent/event
- package-manager/debian
- vendor/fishshell
- canonical/fishshell fish
- version/fishshell fish/3.1.0
- version/fishshell fish/3.3.1
- vendor/fedoraproject
- canonical/fedoraproject fedora
- version/fedoraproject fedora/35
- version/fedoraproject fedora/36
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/11.0