CVE-2020-26116

NameCVE-2020-26116
Descriptionhttp.client in Python 3.x before 3.5.10, 3.6.x before 3.6.12, 3.7.x before 3.7.9, and 3.8.x before 3.8.5 allows CRLF injection if the attacker controls the HTTP request method, as demonstrated by inserting CR and LF control characters in the first argument of HTTPConnection.request.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
ReferencesDLA-2456-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
python3.7 (PTS)buster3.7.3-2+deb10u3fixed
buster (security)3.7.3-2+deb10u4fixed
python3.9 (PTS)bullseye3.9.2-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
python3.5sourcestretch3.5.3-1+deb9u3DLA-2456-1
python3.5source(unstable)(unfixed)
python3.7sourcebuster3.7.3-2+deb10u3
python3.7source(unstable)(unfixed)
python3.8source(unstable)3.8.5-1
python3.9source(unstable)3.9.0~b5-1

Notes

https://bugs.python.org/issue39603
https://python-security.readthedocs.io/vuln/http-header-injection-method.html
https://github.com/python/cpython/commit/8ca8a2e8fb068863c1138f07e3098478ef8be12e (master)
https://github.com/python/cpython/commit/27b811057ff5e93b68798e278c88358123efdc71 (v3.9.0b5)
https://github.com/python/cpython/commit/668d321476d974c4f51476b33aaca870272523bf (v3.8.5)
https://github.com/python/cpython/commit/ca75fec1ed358f7324272608ca952b2d8226d11a (v3.7.9)
https://github.com/python/cpython/commit/f02de961b9f19a5db0ead56305fe0057a78787ae (v3.6.12)
https://github.com/python/cpython/commit/524b8de630036a29ca340bc2ae6fd6dc7dda8f40 (v3.5.10)

Search for package or bug name: Reporting problems