CVE-2020-7694

NameCVE-2020-7694
DescriptionThis affects all versions of package uvicorn. The request logger provided by the package is vulnerable to ASNI escape sequence injection. Whenever any HTTP request is received, the default behaviour of uvicorn is to log its details to either the console or a log file. When attackers request crafted URLs with percent-encoded escape sequences, the logging component will log the URL after it's been processed with urllib.parse.unquote, therefore converting any percent-encoded characters into their single-character equivalent, which can have special meaning in terminal emulators. By requesting URLs with crafted paths, attackers can: * Pollute uvicorn's access logs, therefore jeopardising the integrity of such files. * Use ANSI sequence codes to attempt to interact with the terminal emulator that's displaying the logs (either in real time or from a file).
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)
NVD severitymedium
Debian Bugs969276

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
python-uvicorn (PTS)buster0.3.24-1vulnerable
sid0.11.5-1vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
python-uvicornsource(unstable)(unfixed)969276

Notes

[buster] - python-uvicorn <no-dsa> (Minor issue)
https://snyk.io/vuln/SNYK-PYTHON-UVICORN-575560
https://github.com/encode/uvicorn/issues/723

Search for package or bug name: Reporting problems