CVE-2018-20164

CVSS V2 Medium 5 CVSS V3 Medium 5.3
Description
An issue was discovered in regex.yaml (aka regexes.yaml) in UA-Parser UAP-Core before 0.6.0. A Regular Expression Denial of Service (ReDoS) issue allows remote attackers to overload a server by setting the User-Agent header in an HTTP(S) request to a value containing a long digit string. (The UAP-Core project contains the vulnerability, propagating to all implementations.)
Overview
  • CVE ID
  • CVE-2018-20164
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Modified
  • Published Version
  • 2019-02-13T14:29:00
  • Last Modified Date
  • 2019-10-02T20:15:10
Weakness Enumerations
CWE URL
CWE-185 http://cwe.mitre.org/data/definitions/185.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:uaparser:user_agent_parser-core:*:*:*:*:*:*:*:* 1 OR 0.6.0
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:L
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • LOW
  • Base Score
  • 5.3
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 3.9
  • Impact Score
  • 1.4
References
Reference URL Reference Tags
https://www.x41-dsec.de/lab/advisories/x41-2018-009-uaparser/ Exploit Third Party Advisory
https://github.com/ua-parser/uap-core/commit/156f7e12b215bddbaf3df4514c399d683e6cdadc Patch Third Party Advisory
https://github.com/ua-parser/uap-core/commit/010ccdc7303546cd22b9da687c29f4a996990014 Patch Third Party Advisory
https://github.com/ua-parser/uap-core/issues/332
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2018-20164
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20164
History
Created Old Value New Value Data Type Notes
2022-05-10 07:44:56 Added to TrackCVE
2022-12-03 17:22:55 2019-02-13T14:29Z 2019-02-13T14:29:00 CVE Published Date updated
2022-12-03 17:22:55 2019-10-02T20:15:10 CVE Modified Date updated
2022-12-03 17:22:55 Modified Vulnerability Status updated