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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
bionic
Released (0.12.13-1ubuntu0.1)
focal
Released (0.12.15-2.1ubuntu0.1)
groovy Ignored
(reached end-of-life)
hirsute Ignored
(reached end-of-life)
impish Ignored
(reached end-of-life)
jammy Needs triage

precise Does not exist

trusty
Released (0.12.0-1ubuntu0.1~esm2)
upstream
Released (0.12.19-1)
xenial Ignored
(end of standard support, was needs-triage)
Patches:
upstream: https://github.com/bottlepy/bottle/commit/57a2f22e0c1d2b328c4f54bf75741d74f47f1a6b