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CVE-2017-8929

Good to know:

Date: October 3, 2022

The sized_string_cmp function in libyara/sizedstr.c in YARA 3.5.0 allows remote attackers to cause a denial of service (use-after-free and application crash) via a crafted rule.

Language: C

Severity Score

7.5

Related Resources (6)

Url: https://nvd.nist.gov/vuln/detail/CVE-2017-8929

Url: https://github.com/VirusTotal/yara/commit/053e67e3ec81cc9268ce30eaf0d6663d8639ed1e

Url: https://security-tracker.debian.org/tracker/CVE-2017-8929

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2017-8929

Url: https://github.com/VirusTotal/yara/issues/658

Url: https://www.mend.io/vulnerability-database/CVE-2017-8929

Severity Score

7.5

Weakness Type (CWE)

Use After Free

CWE-416

Top Fix

Upgrade Version

Upgrade to version v3.6.0

CVSS v3.1

Base Score:	7.5
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	HIGH

CVSS v2

Base Score:	5.0
Access Vector (AV):	NETWORK
Access Complexity (AC):	LOW
Authentication (AU):	NONE
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	PARTIAL
Additional information:

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