Vulnerability CVE-2021-23180
Published: 2022-03-02   Modified: 2022-03-03

Description:
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.

Type:

CWE-476

 (NULL Pointer Dereference)

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.8/10
6.4/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Htmldoc project -> Htmldoc 

 References:
https://ubuntu.com/security/CVE-2021-23180
https://bugzilla.redhat.com/show_bug.cgi?id=1967041
https://github.com/michaelrsweet/htmldoc/issues/418
https://github.com/michaelrsweet/htmldoc/commit/19c582fb32eac74b57e155cffbb529377a9e751a
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