Bug 2060662 (CVE-2022-24724) - CVE-2022-24724 cmark-gfm: possible RCE due to integer overflow
Summary: CVE-2022-24724 cmark-gfm: possible RCE due to integer overflow
Status: NEW
Alias: CVE-2022-24724
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Nobody
QA Contact:
Depends On: 2060663 2060664 2060665 2060666 2060667 2060668 2074997 2074998
TreeView+ depends on / blocked
Reported: 2022-03-03 23:31 UTC by Anten Skrabec
Modified: 2023-07-07 08:34 UTC (History)
2 users (show)

Fixed In Version:
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Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2022:5597 0 None None None 2022-07-18 14:30:19 UTC

Description Anten Skrabec 2022-03-03 23:31:40 UTC
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.


Comment 1 Anten Skrabec 2022-03-03 23:32:56 UTC
Created ghc-cmark-gfm tracking bugs for this issue:

Affects: fedora-34 [bug 2060663]
Affects: fedora-35 [bug 2060665]

Created ghostwriter tracking bugs for this issue:

Affects: fedora-34 [bug 2060664]
Affects: fedora-35 [bug 2060666]

Comment 8 errata-xmlrpc 2022-07-18 14:30:18 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2022:5597 https://access.redhat.com/errata/RHSA-2022:5597

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