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
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
|
|
| kinetic |
Needs triage
|
|
| lunar |
Not vulnerable
(0.12.21-1)
|
|
| trusty |
Released
(0.12.0-1ubuntu0.1~esm2)
|
|
| upstream |
Released
(0.12.19-1)
|
|
| xenial |
Needs triage
|
|
|
Patches: upstream: https://github.com/bottlepy/bottle/commit/57a2f22e0c1d2b328c4f54bf75741d74f47f1a6b |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 6.8 |
| Attack vector | Network |
| Attack complexity | High |
| Privileges required | None |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H |