CVE-2022-24724

Severity by source

Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by Red Hat (high), AlmaLinux (high).

Description

cmark-gfm is GitHub's extended version of the C reference implementation of CommonMark. Prior to versions 0.29.0.gfm.3 and 0.28.3.gfm.21, an integer overflow in cmark-gfm's table row parsing `table.c:row_from_string` 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 depending on how and where `cmark-gfm` is used. If `cmark-gfm` is used for rendering remote user controlled markdown, this vulnerability may lead to Remote Code Execution (RCE) in applications employing affected versions of the `cmark-gfm` library. This vulnerability has been patched in the following cmark-gfm versions 0.29.0.gfm.3 and 0.28.3.gfm.21. A workaround is available. The vulnerability exists in the table markdown extensions of cmark-gfm. Disabling the table extension will prevent this vulnerability from being triggered.

Affected packages and fixed versions

References

• http://packetstormsecurity.com/files/166599/cmark-gfm-Integer-overflow.html
• https://access.redhat.com/errata/RHSA-2022:5597
• https://access.redhat.com/security/cve/CVE-2022-24724
• https://bugzilla.redhat.com/2060662
• https://errata.almalinux.org/8/ALSA-2022-5597.html
• https://github.com/github/cmark-gfm/security/advisories/GHSA-mc3g-88wq-6f4x
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5CYUU662VO6CCXQKVZVOHXX3RGIF2DLQ/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/F7V3HAM5H6YFJG2QFEXACZR3XVWFTXTC/