UBUNTU-CVE-2021-21317
- Source
- https://ubuntu.com/security/CVE-2021-21317
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-21317.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2021-21317
- Related
- Published
- 2021-02-16T18:15:00Z
- Modified
- 2025-01-13T10:22:29Z
- Severity
-
- 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
- Summary
- [none]
- Details
-
uap-core in an open-source npm package which contains the core of BrowserScope's original user agent string parser. In uap-core before version 0.11.0, 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 is fixed in version 0.11.0. Downstream packages such as uap-python, uap-ruby etc which depend upon uap-core follow different version schemes.
- References
Affected packages
Ubuntu:20.04:LTS / uap-core
Package
- Name
- uap-core
- Purl
- pkg:deb/ubuntu/uap-core@20190213-2?arch=source&distro=focal
Ubuntu:22.04:LTS / uap-core
Package
- Name
- uap-core
- Purl
- pkg:deb/ubuntu/uap-core@1:0.15.0-1?arch=source&distro=jammy
Ubuntu:24.10 / uap-core
Package
- Name
- uap-core
- Purl
- pkg:deb/ubuntu/uap-core@1:0.18.0-1?arch=source&distro=oracular