CVE-2020-5243

CVSS V2 Medium 5 CVSS V3 High 7.5
Description
uap-core before 0.7.3 is vulnerable to a denial of service attack when processing crafted User-Agent strings. Some regexes are vulnerable to regular expression denial of service (REDoS) due to overlapping capture groups. This allows remote attackers to overload a server by setting the User-Agent header in an HTTP(S) request to maliciously crafted long strings. This has been patched in uap-core 0.7.3.
Overview
  • CVE ID
  • CVE-2020-5243
  • Assigner
  • security-advisories@github.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-02-21T00:15:10
  • Last Modified Date
  • 2020-02-25T19:44:54
Weakness Enumerations
CWE URL
CWE-400 http://cwe.mitre.org/data/definitions/400.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:uap-core_project:uap-core:*:*:*:*:*:*:*:* 1 OR 0.7.3
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
  • 3.1
  • Vector String
  • CVSS:3.1/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/ua-parser/uap-core/commit/0afd61ed85396a3b5316f18bfd1edfaadf8e88e1 Patch Third Party Advisory
https://github.com/ua-parser/uap-core/security/advisories/GHSA-cmcx-xhr8-3w9p Exploit Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-5243
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-5243
History
Created Old Value New Value Data Type Notes
2022-05-10 16:48:50 Added to TrackCVE
2022-12-04 11:39:42 2020-02-21T00:15Z 2020-02-21T00:15:10 CVE Published Date updated
2022-12-04 11:39:42 2020-02-25T19:44:54 CVE Modified Date updated
2022-12-04 11:39:42 Analyzed Vulnerability Status updated