PT-2021-8204 · Pypi+4 · Mpmath+4

Os-Ws · Published 2021-06-21 · Updated 2025-07-03 · CVE-2021-29063

Positive Technologies (AI Summary)

CVSS v4.0

8.7

High

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions Mpmath versions 1.0.0 through 1.2.1

Description A Regular Expression Denial of Service (ReDOS) issue is present in the mpmathify function of the Mpmath library for Python. This issue can be exploited by a remote attacker to cause a denial of service. The mpmathify function is the vulnerable component. No information is provided about the estimated number of potentially affected devices or real-world incidents.

Recommendations For Mpmath versions 1.0.0 through 1.2.1, consider disabling the mpmathify function as a temporary workaround until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Allocation of Resources Without Limits

Weakness Enumeration

CWE-770

Related Identifiers

BDU:2024-11296

CVE-2021-29063

GHSA-F865-M6CQ-J9VX

MGASA-2021-0479

OPENSUSE-SU-2024:13280-1

PYSEC-2021-427

USN-7160-1

Affected Products

Debian

Linuxmint

Mpmath

Red Os

Ubuntu

References · 42

• 🔥 https://github.com/yetingli/PoCs/blob/main/CVE-2021-29063/Mpmath.md · Exploit
• https://github.com/fredrik-johansson/mpmath/commit/46d44c3c8f3244017fe1eb102d564eb4ab8ef750 · Patch
• https://github.com/npm/hosted-git-info/pull/76 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-29063 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MS2U6GLXQSRZJE2HVUAUMVFR2DWQLCZG · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/EIUX3XWY2K3MSO7QXMZXQQYAURARSPC5 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-29063 · Security Note
• https://osv.dev/vulnerability/CVE-2021-29063 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2021-0479.html · Security Note
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EIUX3XWY2K3MSO7QXMZXQQYAURARSPC5 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3M5O55E7VUDMXCPQR6MQTOIFDKHP36AA · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-29063 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/thread/MS2U6GLXQSRZJE2HVUAUMVFR2DWQLCZG · Vendor Advisory
• https://bdu.fstec.ru/vul/2024-11296 · Security Note
• https://cve.org/CVERecord?id=CVE-2021-29063 · Security Note