CVE-2020-28473

Published: 18 January 2021

The package bottle from 0 and before 0.12.19 are vulnerable to Web Cache Poisoning by using a vector called parameter cloaking. When the attacker can separate query parameters using a semicolon (;), they can cause a difference in the interpretation of the request between the proxy (running with default configuration) and the server. This can result in malicious requests being cached as completely safe ones, as the proxy would usually not see the semicolon as a separator, and therefore would not include it in a cache key of an unkeyed parameter.

Priority

Medium

CVSS 3 base score: 6.8

Status

Package Release Status
python-bottle
Launchpad, Ubuntu, Debian
Upstream
Released (0.12.19-1)
Ubuntu 21.10 (Impish Indri) Needs triage

Ubuntu 21.04 (Hirsute Hippo) Needs triage

Ubuntu 20.04 LTS (Focal Fossa)
Released (0.12.15-2.1ubuntu0.1)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (0.12.13-1ubuntu0.1)
Ubuntu 16.04 ESM (Xenial Xerus) Ignored
(end of standard support, was needs-triage)
Ubuntu 14.04 ESM (Trusty Tahr)
Released (0.12.0-1ubuntu0.1~esm2)
Patches:
Upstream: https://github.com/bottlepy/bottle/commit/57a2f22e0c1d2b328c4f54bf75741d74f47f1a6b