Vulnerability-Lookup

CNVD-2022-23470

Vulnerability from cnvd - Published: 2022-03-29

Title

cmark-gfm输入验证错误漏洞

Description

cmark-gfm是CommonMark的 C参考实现的扩展版本，是带有规范的Markdown语法的合理化版本。 cmark-gfm存在输入验证错误漏洞，攻击者可利用该漏洞导致使用受影响的cmark-gfm库版本的应用程序中的远程代码执行。

Severity

高

Patch Name

cmark-gfm输入验证错误漏洞的补丁

Patch Description

cmark-gfm是CommonMark的 C参考实现的扩展版本，是带有规范的Markdown语法的合理化版本。 cmark-gfm存在输入验证错误漏洞，攻击者可利用该漏洞导致使用受影响的cmark-gfm库版本的应用程序中的远程代码执行。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://github.com/github/cmark-gfm/security/advisories/GHSA-mc3g-88wq-6f4x

Reference

https://nvd.nist.gov/vuln/detail/CVE-2022-24724

Impacted products

Name
['cmark-gfm cmark-gfm <0.29.0.gfm.3', 'cmark-gfm cmark-gfm <0.28.3.gfm.21']

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JSON

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}

CVE-2022-24724 (GCVE-0-2022-24724)

Vulnerability from cvelistv5 – Published: 2022-03-03 19:35 – Updated: 2025-04-22 18:20

Title

Integer overflow in table parsing extension leads to heap memory corruption

Summary

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.

Severity

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-22 15:44 UTC

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

GitHub_M mitre root Scorecard

References

8 references

URL	Tags
https://github.com/github/cmark-gfm/security/advi…	x_refsource_CONFIRM
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
http://packetstormsecurity.com/files/166599/cmark…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
github	cmark-gfm	Affected: < 0.28.3.gfm.21 Affected: >= 0.29.0.gfm.0, < 0.29.0.gfm.3

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JSON

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CNVD-2022-23470

CVE-2022-24724 (GCVE-0-2022-24724)

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