CVE Vulnerability

CVE-2018-19974

In YARA 3.8.1, bytecode in a specially crafted compiled rule can read uninitialized data from VM scratch memory in libyara/exec.c. This can allow attackers to discover addresses in the real stack (not the YARA virtual stack).

4.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

Scope

5.5 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/VirusTotal/yara/issues/999 Issue Tracking Exploit
https://github.com/bnbdr/swisscheese/ Exploit Third Party Advisory
https://bnbdr.github.io/posts/extracheese/ Exploit Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DFFXDAMP6GJ337LIOTVF5I4T6QGMN3ZR/
Configurations

Configuration 1

cpe:2.3:a:virustotal:yara:3.8.1:*:*:*:*:*:*:*
Information

Published : 2018-12-17 07:29

Updated : 2020-08-24 05:37

NVD link : CVE-2018-19974

Mitre link : CVE-2018-19974

Products Affected
No products.
CWE
CWE-908