PT-2017-18920 · Yara · Yara

Fumfel · Published 2017-06-05 · Updated 2026-03-09 · CVE-2017-9438

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions YARA version 3.5.0

Description The issue allows remote attackers to cause a denial of service, specifically stack consumption, via a crafted rule involving hex strings. This is due to the mishandling of the rule in the yr re emit function within the regexp module of the affected software.

Recommendations For YARA version 3.5.0, at the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Uncontrolled Recursion

Weakness Enumeration

CWE-674

Related Identifiers

CVE-2017-9438

USN-8080-1

Affected Products

Yara

References · 31

• https://github.com/VirusTotal/yara/commit/10e8bd3071677dd1fa76beeef4bc2fc427cea5e7 · Patch
• https://github.com/VirusTotal/yara/issues/674 · Patch
• https://security-tracker.debian.org/tracker/CVE-2017-9438 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-8080-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-11328 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2017-9438 · Security Note
• https://ubuntu.com/security/CVE-2017-5924 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-12035 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2017-9438 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-3402 · Vendor Advisory
• https://osv.dev/vulnerability/USN-8080-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-9304 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-19975 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-9438 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-19974 · Vendor Advisory