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CVE-2017-5924

Good to know:

Date: April 3, 2017

libyara/grammar.y in YARA 3.5.0 allows remote attackers to cause a denial of service (use-after-free and application crash) via a crafted rule that is mishandled in the yr_compiler_destroy function.

Language: Yacc

Severity Score

7.5

Related Resources (7)

Url: https://nvd.nist.gov/vuln/detail/CVE-2017-5924

Url: https://github.com/VirusTotal/yara/issues/593

Url: https://github.com/VirusTotal/yara/commit/7f02eca670f29c00a1d2c305e96febae6ce5d37b

Url: https://security-tracker.debian.org/tracker/CVE-2017-5924

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2017-5924

Url: http://www.securityfocus.com/bid/98075

Url: https://www.mend.io/vulnerability-database/CVE-2017-5924

Severity Score

7.5

Weakness Type (CWE)

Use After Free

CWE-416

Top Fix

Upgrade Version

Upgrade to version 3.6.0

CVSS v3.1

Base Score:	7.5
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:	5.0
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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