CVE-2018-19976

CVSS V2 Medium 4.3 CVSS V3 Medium 5.5
Description
In YARA 3.8.1, bytecode in a specially crafted compiled rule is exposed to information about its environment, in libyara/exec.c. This is a consequence of the design of the YARA virtual machine.
Overview
  • CVE ID
  • CVE-2018-19976
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Modified
  • Published Version
  • 2018-12-17T19:29:02
  • Last Modified Date
  • 2019-10-06T03:15:10
Weakness Enumerations
CWE URL
CWE-200 http://cwe.mitre.org/data/definitions/200.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:virustotal:yara:3.8.1:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:N/C:P/I:N/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • NONE
  • Availability Impact
  • NONE
  • Base Score
  • 4.3
  • Severity
  • MEDIUM
  • Exploitability Score
  • 8.6
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.0
  • Vector String
  • CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • REQUIRED
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • NONE
  • Base Score
  • 5.5
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 1.8
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://github.com/VirusTotal/yara/issues/999 Exploit Issue Tracking Third Party Advisory
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/
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2018-19976
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-19976
History
Created Old Value New Value Data Type Notes
2022-05-10 17:15:53 Added to TrackCVE
2022-12-03 15:27:12 2018-12-17T19:29Z 2018-12-17T19:29:02 CVE Published Date updated
2022-12-03 15:27:12 2019-10-06T03:15:10 CVE Modified Date updated
2022-12-03 15:27:12 Modified Vulnerability Status updated