CVE-2022-39209
GitHub cmark-gfm Denial of Service (DoS) Vulnerability
Description
cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and rendering library and program in C. In versions prior to 0.29.0.gfm.6 a polynomial time complexity issue in cmark-gfm's autolink extension may lead to unbounded resource exhaustion and subsequent denial of service. Users may verify the patch by running `python3 -c 'print("![l"* 100000 + "\n")' | ./cmark-gfm -e autolink`, which will resource exhaust on unpatched cmark-gfm but render correctly on patched cmark-gfm. This vulnerability has been patched in 0.29.0.gfm.6. Users are advised to upgrade. Users unable to upgrade should disable the use of the autolink extension.
INFO
Published Date :
Sept. 15, 2022, 6:15 p.m.
Last Modified :
Nov. 7, 2023, 3:50 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2022-39209.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2022-39209 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-39209 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JMGP65NANDVKPDMXMKYO2ZV2H2HZJY4P/ [No types assigned] Added Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JIUCZN3PEKUCT2JQYQTYOVIJG2KSD6G7/ [No types assigned] Added Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UEAAAI4OULDYQ2TA3HOXH54PC3DCBFZS/ [No types assigned] Removed Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/JIUCZN3PEKUCT2JQYQTYOVIJG2KSD6G7/ Removed Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/JMGP65NANDVKPDMXMKYO2ZV2H2HZJY4P/ Removed Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/UEAAAI4OULDYQ2TA3HOXH54PC3DCBFZS/ -
Reanalysis by [email protected]
Jul. 11, 2023
Action Type Old Value New Value Removed CWE NIST CWE-400 Added CWE NIST CWE-407 -
Modified Analysis by [email protected]
Jan. 20, 2023
Action Type Old Value New Value Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/UEAAAI4OULDYQ2TA3HOXH54PC3DCBFZS/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/UEAAAI4OULDYQ2TA3HOXH54PC3DCBFZS/ Mailing List, Third Party Advisory Changed CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* OR *cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Nov. 14, 2022
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/UEAAAI4OULDYQ2TA3HOXH54PC3DCBFZS/ [No Types Assigned] -
Modified Analysis by [email protected]
Nov. 08, 2022
Action Type Old Value New Value Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/JIUCZN3PEKUCT2JQYQTYOVIJG2KSD6G7/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/JIUCZN3PEKUCT2JQYQTYOVIJG2KSD6G7/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/JMGP65NANDVKPDMXMKYO2ZV2H2HZJY4P/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/JMGP65NANDVKPDMXMKYO2ZV2H2HZJY4P/ Mailing List, Third Party Advisory Added CWE NIST CWE-400 Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Nov. 05, 2022
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/JIUCZN3PEKUCT2JQYQTYOVIJG2KSD6G7/ [No Types Assigned] Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/JMGP65NANDVKPDMXMKYO2ZV2H2HZJY4P/ [No Types Assigned] -
CVE Modified by [email protected]
Oct. 17, 2022
Action Type Old Value New Value Removed CVSS V3.1 GitHub, Inc. AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CVSS V3.1 GitHub, Inc. AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H -
Initial Analysis by [email protected]
Sep. 19, 2022
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://en.wikipedia.org/wiki/Time_complexity No Types Assigned https://en.wikipedia.org/wiki/Time_complexity Third Party Advisory Changed Reference Type https://github.com/github/cmark-gfm/commit/9d57d8a23142b316282bdfc954cb0ecda40a8655 No Types Assigned https://github.com/github/cmark-gfm/commit/9d57d8a23142b316282bdfc954cb0ecda40a8655 Patch, Third Party Advisory Changed Reference Type https://github.com/github/cmark-gfm/security/advisories/GHSA-cgh3-p57x-9q7q No Types Assigned https://github.com/github/cmark-gfm/security/advisories/GHSA-cgh3-p57x-9q7q Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:github:cmark-gfm:*:*:*:*:*:*:*:* versions up to (excluding) 0.29.0.gfm.6
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-39209 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-39209
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.18 }} 0.01%
score
0.54666
percentile