Bug 1196742 - (CVE-2022-24724) VUL-0: CVE-2022-24724: ghc-cmark-gfm: possible RCE due to integer overflow
VUL-0: CVE-2022-24724: ghc-cmark-gfm: possible RCE due to integer overflow
Status: NEW
Classification: openSUSE
Product: openSUSE Distribution
Classification: openSUSE
Component: Security
Leap 15.4
Other Other
: P3 - Medium : Normal (vote)
: ---
Assigned To: Security Team bot
Security Team bot
Depends on:
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Reported: 2022-03-04 08:26 UTC by Alexander Bergmann
Modified: 2022-03-04 14:46 UTC (History)
0 users

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Found By: Security Response Team
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Description Alexander Bergmann 2022-03-04 08:26:27 UTC

Only might affecting: SUSE:Factory:Head/ghc-cmark-gfm

It looks like our current version 0.2.2 is quite behind the official upstream release 0.29.0.gfm.3. So it is a bit unsure if the old version is actually affected or not.

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.