#VU65401 Integer overflow in cmark-gfm
Vulnerability identifier: #VU65401
Vulnerability risk: High
CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-190
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
cmark-gfm
Universal components / Libraries /
Software for developers
Vendor: GitHub
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow when parsing tables whose marker rows contain more than UINT16_MAX columns. A remote attacker can pass specially crafted data to the application, trigger integer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
cmark-gfm: 0.29.0.gfm.0 - 0.29.0.gfm.2, 0.28.0.gfm.5 - 0.28.3.gfm.20, 0.27.1.gfm.0 - 0.27.1.gfm.4
External links
http://github.com/github/cmark-gfm/security/advisories/GHSA-mc3g-88wq-6f4x
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Z55K6VNVKO2G5SNKRCQ2KDG5SKTX5PVV/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/F7V3HAM5H6YFJG2QFEXACZR3XVWFTXTC/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TJBFIJEHJZEEDG6MO4MQHZYKUXELH77O/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RSKUOJ2VAYGTJXPDE2RRPMNLVVMKCI77/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5CYUU662VO6CCXQKVZVOHXX3RGIF2DLQ/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KH4UQA6VWVZU5EW3HNEAB7D7BTCNJSJ2/
http://packetstormsecurity.com/files/166599/cmark-gfm-Integer-overflow.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
