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CVE-2017-9438

Date: June 5, 2017

libyara/re.c in the regexp module in YARA 3.5.0 allows remote attackers to cause a denial of service (stack consumption) via a crafted rule (involving hex strings) that is mishandled in the _yr_re_emit function, a different vulnerability than CVE-2017-9304.

Language: Yacc

Severity Score

Related Resources (8)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XXM224OLGI6KAOROLDPPGGCZ2OQVQ6HH/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FKNXSH5ERG6NELTXCYVJLUPJJJ2TNEBD/
https://people.canonical.com/~ubuntu-security/cve/CVE-2017-9438
https://nvd.nist.gov/vuln/detail/CVE-2017-9438
https://github.com/VirusTotal/yara/issues/674
https://security-tracker.debian.org/tracker/CVE-2017-9438
https://github.com/VirusTotal/yara/commit/10e8bd3071677dd1fa76beeef4bc2fc427cea5e7
https://www.mend.io/vulnerability-database/CVE-2017-9438

Severity Score

Weakness Type (CWE)

Resource Management Errors

CWE-399

Uncontrolled Recursion

CWE-674

CVSS v3.1

Base Score:
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:
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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