DescriptionA flaw was found in Python, specifically within the urllib.parse module. This module helps break Uniform Resource Locator (URL) strings into components. The issue involves how the urlparse method does not sanitize input and allows characters like '\r' and '\n' in the URL path. This flaw allows an attacker to input a crafted URL, leading to injection attacks. This flaw affects Python versions prior to 3.10.0b1, 3.9.5, 3.8.11, 3.7.11 and 3.6.14.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
python3.7 (PTS)buster3.7.3-2+deb10u3vulnerable
python3.9 (PTS)bullseye3.9.2-1vulnerable
bookworm, sid3.9.13-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


[bullseye] - python3.9 <no-dsa> (Minor issue)
[buster] - python3.7 <no-dsa> (Minor issue)
[stretch] - python3.5 <postponed> (Minor issue; regressions reports)
Fixed by: (v3.10.0b1)
Followup for 3.10.x: (v3.10.0b2)
Fixed by: (v3.9.5)
Followup for 3.9.x: (v3.9.6)
Fixed by: (v3.8.11)
Fixed by: (v3.7.11)
Fixed by: (v3.6.14)

Search for package or bug name: Reporting problems