CVE-2017-8294

CVSS V2 Medium 5 CVSS V3 High 7.5

Description

libyara/re.c in the regex component in YARA 3.5.0 allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via a crafted rule that is mishandled in the yr_re_exec function.

Overview

CVE ID
CVE-2017-8294

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2017-04-27T14:59:00

Last Modified Date
2017-05-03T12:21:47

Weakness Enumerations

CWE	URL
CWE-125	http://cwe.mitre.org/data/definitions/125.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:virustotal:yara:3.5.0:::::::*	1	OR

CVSS Version 2

Version
2.0

Vector String
AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector
NETWORK

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
NONE

Integrity Impact
NONE

Availability Impact
PARTIAL

Base Score
5

Severity
MEDIUM

Exploitability Score
10

Impact Score
2.9

CVSS Version 3

Version
3.0

Vector String
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
NONE

Availability Impact
HIGH

Base Score
7.5

Base Severity
HIGH

Exploitability Score
3.9

Impact Score
3.6

References

Reference URL	Reference Tags
https://github.com/VirusTotal/yara/issues/646	Issue Tracking Patch
https://github.com/VirusTotal/yara/commit/83d799804648c2a0895d40a19835d9b757c6fa4e	Patch
http://www.securityfocus.com/bid/98072	Third Party Advisory VDB Entry

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2017-8294
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-8294

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 09:43:48				Added to TrackCVE
2022-12-02 16:27:05	2017-04-27T14:59Z	2017-04-27T14:59:00	CVE Published Date	updated
2022-12-02 16:27:05		2017-05-03T12:21:47	CVE Modified Date	updated
2022-12-02 16:27:05		Analyzed	Vulnerability Status	updated