CVE-2020-23914

CVSS V2 Medium 4.3 CVSS V3 Medium 5.5
Description
An issue was discovered in cpp-peglib through v0.1.12. A NULL pointer dereference exists in the peg::AstOptimizer::optimize() located in peglib.h. It allows an attacker to cause Denial of Service.
Overview
  • CVE ID
  • CVE-2020-23914
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-04-21T18:15:08
  • Last Modified Date
  • 2021-04-26T17:22:31
Weakness Enumerations
CWE URL
CWE-476 http://cwe.mitre.org/data/definitions/476.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:cpp-peglib_project:cpp-peglib:*:*:*:*:*:*:*:* 1 OR 0.1.12
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:N/C:N/I:N/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 4.3
  • Severity
  • MEDIUM
  • Exploitability Score
  • 8.6
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • REQUIRED
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 5.5
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 1.8
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://github.com/yhirose/cpp-peglib/issues/121 Exploit Third Party Advisory
https://github.com/yhirose/cpp-peglib/commit/0061f393de54cf0326621c079dc2988336d1ebb3 Patch Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-23914
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-23914
History
Created Old Value New Value Data Type Notes
2022-05-10 07:14:09 Added to TrackCVE
2022-12-06 02:12:54 2021-04-21T18:15Z 2021-04-21T18:15:08 CVE Published Date updated
2022-12-06 02:12:55 2021-04-26T17:22:31 CVE Modified Date updated
2022-12-06 02:12:55 Analyzed Vulnerability Status updated