CVE-2021-23180

moderate-risk
Published 2022-03-02

A flaw was found in htmldoc in v1.9.12 and before. Null pointer dereference in file_extension(),in file.c may lead to execute arbitrary code and denial of service.

Do I need to act?

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0.28% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.8/10 High
LOCAL / LOW complexity

Affected Products (1)

Affected Vendors

Htmldoc Project

References (8)

Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1967041
Patch https://github.com/michaelrsweet/htmldoc/commit/19c582fb32eac74b57e155cffbb52937...
Exploit https://github.com/michaelrsweet/htmldoc/issues/418
Third Party Advisory https://ubuntu.com/security/CVE-2021-23180
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1967041
Patch https://github.com/michaelrsweet/htmldoc/commit/19c582fb32eac74b57e155cffbb52937...
Exploit https://github.com/michaelrsweet/htmldoc/issues/418
Third Party Advisory https://ubuntu.com/security/CVE-2021-23180
30
/ 100
moderate-risk
Severity 24/34 · High
Exploitability 1/34 · Minimal
Exposure 5/34 · Minimal