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CVE-2021-23180

Good to know:

Date: March 2, 2022

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.

Language: C++

Severity Score

7.8

Related Resources (8)

Url: https://github.com/michaelrsweet/htmldoc/issues/418

Url: https://ubuntu.com/security/CVE-2021-23180

Url: https://bugzilla.redhat.com/show_bug.cgi?id=1967041

Url: https://security-tracker.debian.org/tracker/CVE-2021-23180

Url: https://nvd.nist.gov/vuln/detail/CVE-2021-23180

Url: https://github.com/michaelrsweet/htmldoc/commit/19c582fb32eac74b57e155cffbb529377a9e751a

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2021-23180

Url: https://www.mend.io/vulnerability-database/CVE-2021-23180

Severity Score

7.8

Weakness Type (CWE)

NULL Pointer Dereference

CWE-476

Top Fix

Upgrade Version

Upgrade to version v1.9.12

CVSS v3.1

Base Score:	7.8
Attack Vector (AV):	LOCAL
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	REQUIRED
Scope (S):	UNCHANGED
Confidentiality (C):	HIGH
Integrity (I):	HIGH
Availability (A):	HIGH

CVSS v2

Base Score:	6.8
Access Vector (AV):	NETWORK
Access Complexity (AC):	MEDIUM
Authentication (AU):	NONE
Confidentiality (C):	PARTIAL
Integrity (I):	PARTIAL
Availability (A):	PARTIAL
Additional information:

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