CVE-2017-8929

Published: May 14, 2017Modified: May 13, 2026

7.5

Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability: 3.9 / Impact: 3.6

Source: NVD

Description

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.

Affected (1)

Products: Virustotal: Yara

Virustotal

1 product

Yara

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Virustotal Yara	Version 3.5.0

Related CWEs

CWE-416

Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (4)

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

Source: cve@mitre.org

Patch

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

Source: cve@mitre.org

Issue TrackingPatch

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

Source: af854a3a-2127-422b-91ae-364da2661108

Patch

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

Source: af854a3a-2127-422b-91ae-364da2661108

Issue TrackingPatch

Timeline

No history available yet.