Vulnerability in Bottlepy Bottle
CVE-2020-28473
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.
Vulnerability class: HTTP Request Smuggling
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H.
EPSS exploit prediction
EPSS: 0.018 (77.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 77.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000
Affected products
- Bottlepy Bottle
- Debian Linux — versions 9.0
- Bottle — versions 0, unspecified
Weakness classification (CWE)
References
- snyk.io/vuln/SNYK-PYTHON-BOTTLE-1017108 (Exploit, Third Party Advisory)
- github.com/bottlepy/bottle (Product, Third Party Advisory)
- snyk.io/blog/cache-poisoning-in-popular-open-source-packages/ (Third Party Advisory)
- lists.debian.org/debian-lts-announce/2021/01/msg00019.html (mailing-list, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-28473?
- CVE-2020-28473 is a medium-severity vulnerability in Bottlepy Bottle, classified under Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling). CVSS score: 6.8/10. Published 2021-01-18.
- How severe is CVE-2020-28473?
- Medium severity. CVSS v3 base score is 6.8 out of 10.