CVE-2020-28473: Web Cache Poisoning
First published: Mon Jan 18 2021(Updated: )
The package bottle 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.
Credit: report@snyk.io report@snyk.io
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Bottlepy Bottle | <0.12.19 | |
| Debian Debian Linux | =9.0 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://nvd.nist.gov/vuln/detail/CVE-2020-28473
- https://github.com/bottlepy/bottle/commit/57a2f22e0c1d2b328c4f54bf75741d74f47f1a6b
- https://lists.debian.org/debian-lts-announce/2021/01/msg00019.html
- https://snyk.io/blog/cache-poisoning-in-popular-open-source-packages/
- https://snyk.io/vuln/SNYK-PYTHON-BOTTLE-1017108
- https://github.com/advisories/GHSA-qhx9-7hx7-cp4r (Advisory)
- https://github.com/bottlepy/bottle
- https://github.com/pypa/advisory-database/tree/main/vulns/bottle/PYSEC-2021-129.yaml
- https://snyk.io/blog/cache-poisoning-in-popular-open-source-packages
- collector/nvd-index
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/title
- agent/weakness
- agent/author
- agent/severity
- agent/description
- agent/event
- agent/first-publish-date
- collector/github-advisory-latest
- source/GitHub
- alias/GHSA-qhx9-7hx7-cp4r
- alias/CVE-2020-28473
- agent/software-canonical-lookup
- agent/references
- agent/last-modified-date
- collector/nvd-cve
- source/NVD
- collector/github-advisory
- agent/tags
- agent/trending
- vendor/bottlepy
- canonical/bottlepy bottle
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/9.0
- package-manager/pip