CVE-2024-22051: CommonMarker Integer Overflow Vulnerability
First published: Thu Mar 03 2022(Updated: )
### Impact CommonMarker uses `cmark-gfm` for rendering [Github Flavored Markdown](https://github.github.com/gfm/). An [integer overflow in `cmark-gfm`'s table row parsing](https://github.com/github/cmark-gfm/security/advisories/GHSA-mc3g-88wq-6f4x) may lead to heap memory corruption when parsing tables who's marker rows contain more than UINT16_MAX columns. The impact of this heap corruption ranges from Information Leak to Arbitrary Code Execution. If affected versions of CommonMarker are used for rendering remote user controlled markdown, this vulnerability may lead to Remote Code Execution (RCE). ### Patches This vulnerability has been patched in the following CommonMarker release: - v0.23.4 ### Workarounds The vulnerability exists in the table markdown extensions of `cmark-gfm`. Disabling any use of the table extension will prevent this vulnerability from being triggered. ### References - https://github.com/github/cmark-gfm/security/advisories/GHSA-mc3g-88wq-6f4x ### Acknowledgements We would like to thank Felix Wilhelm of Google's Project Zero for reporting this vulnerability ### For more information If you have any questions or comments about this advisory: * Open an issue in [CommonMarker](http://github.com/gjtorikian/commonmarker)
Credit: disclosure@vulncheck.com disclosure@vulncheck.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| rubygems/commonmarker | <0.23.4 | 0.23.4 |
| GitHub cmark-gfm | <0.28.3.gfm.21 | |
| GitHub cmark-gfm | >=0.29.0.gfm.0<0.29.0.gfm.3 | |
| CommonMarker gem | <0.23.4 |
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Reference Links
- https://github.com/github/cmark-gfm/security/advisories/GHSA-mc3g-88wq-6f4x
- https://github.com/gjtorikian/commonmarker/security/advisories/GHSA-fmx4-26r3-wxpf
- https://github.com/gjtorikian/commonmarker/commit/ab4504fd17460627a6ab255bc3c63e8e5fc6aed3
- https://nvd.nist.gov/vuln/detail/CVE-2024-22051
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/commonmarker/CVE-2024-22051.yml
- https://github.com/advisories/GHSA-fmx4-26r3-wxpf (Advisory)
- https://vulncheck.com/advisories/vc-advisory-GHSA-fmx4-26r3-wxpf
Frequently Asked Questions
What is the severity of CVE-2024-22051?
CVE-2024-22051 has a high severity rating due to the potential for heap memory corruption.
How do I fix CVE-2024-22051?
To fix CVE-2024-22051, upgrade the cmark-gfm to version 0.28.3.gfm.21 or later, and commonmarker to version 0.23.4.
What software is affected by CVE-2024-22051?
The vulnerability CVE-2024-22051 affects commonmarker versions prior to 0.23.4 and cmark-gfm versions up to 0.28.3.gfm.21.
What type of vulnerability is CVE-2024-22051?
CVE-2024-22051 is an integer overflow vulnerability that can lead to heap memory corruption.
Who is responsible for the vulnerabilities in CVE-2024-22051?
The vulnerabilities in CVE-2024-22051 are associated with the GitHub projects cmark-gfm and commonmarker.
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