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CVE-2018-19975

Date: December 17, 2018

In YARA 3.8.1, bytecode in a specially crafted compiled rule can read data from any arbitrary address in memory, in libyara/exec.c. Specifically, OP_COUNT can read a DWORD.

Language: C#

Severity Score

5.5

Related Resources (7)

Url: https://security-tracker.debian.org/tracker/CVE-2018-19975

Url: https://github.com/VirusTotal/yara/issues/999

Url: https://github.com/bnbdr/swisscheese/

Url: https://bnbdr.github.io/posts/extracheese/

Url: https://nvd.nist.gov/vuln/detail/CVE-2018-19975

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DFFXDAMP6GJ337LIOTVF5I4T6QGMN3ZR/

Url: https://www.mend.io/vulnerability-database/CVE-2018-19975

Severity Score

5.5

Weakness Type (CWE)

Out-of-bounds Read

CWE-125

CVSS v3.1

Base Score:	5.5
Attack Vector (AV):	LOCAL
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	REQUIRED
Scope (S):	UNCHANGED
Confidentiality (C):	HIGH
Integrity (I):	NONE
Availability (A):	NONE

CVSS v2

Base Score:	7.1
Access Vector (AV):	NETWORK
Access Complexity (AC):	MEDIUM
Authentication (AU):	NONE
Confidentiality (C):	COMPLETE
Integrity (I):	NONE
Availability (A):	NONE
Additional information:

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