Incorrect Regular Expression in mpmath - CVE-2021-29063
Published: December 19, 2024
Vulnerability identifier: #VU101870
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-29063
CWE-ID: CWE-185
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient input validation when processing regular expressions. A remote attacker can pass specially crafted data to the application and perform regular expression denial of service (ReDos) attack.
Affected software
mpmath
Fedora
Ubuntu
python3-mpmath (Ubuntu package)
python-mpmath (Ubuntu package)
python-mpmath
Fedora
Ubuntu
python3-mpmath (Ubuntu package)
python-mpmath (Ubuntu package)
python-mpmath
How to mitigate CVE-2021-29063
Install update from vendor's website.
mpmath - update to 1.3.0
python3-mpmath (Ubuntu package) - update to Ubuntu Pro
python-mpmath (Ubuntu package) - update to Ubuntu Pro
python-mpmath - addressed in versions 1.0.0-2.el7, 1.1.0-13.fc33, 1.2.1-2.fc34, 1.2.1-2.fc35
python3-mpmath (Ubuntu package) - update to Ubuntu Pro
python-mpmath (Ubuntu package) - update to Ubuntu Pro
python-mpmath - addressed in versions 1.0.0-2.el7, 1.1.0-13.fc33, 1.2.1-2.fc34, 1.2.1-2.fc35
External References
- https://github.com/npm/hosted-git-info/pull/76
- https://github.com/yetingli/PoCs/blob/main/CVE-2021-29063/Mpmath.md
- https://github.com/yetingli/SaveResults/blob/main/js/hosted-git-info.js
- https://www.npmjs.com/package/hosted-git-info
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3M5O55E7VUDMXCPQR6MQTOIFDKHP36AA/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MS2U6GLXQSRZJE2HVUAUMVFR2DWQLCZG/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EIUX3XWY2K3MSO7QXMZXQQYAURARSPC5/
- https://github.com/fredrik-johansson/mpmath/commit/46d44c3c8f3244017fe1eb102d564eb4ab8ef750
- https://github.com/mpmath/mpmath/releases/tag/1.3.0