CVE-2020-28473
Last modified
CVE-2020-28473 is a medium-severity vulnerability rated 6.8/10 on the CVSS scale. 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. EPSS estimates a 1.84% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Bottlepy | Bottle | < 0.12.19 |
| Debian | Debian Linux | 9.0 |
References
- https://github.com/bottlepy/bottleProduct, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/01/msg00019.htmlThird Party Advisory
- https://snyk.io/blog/cache-poisoning-in-popular-open-source-packages/Third Party Advisory
- https://snyk.io/vuln/SNYK-PYTHON-BOTTLE-1017108Exploit, Third Party Advisory
- https://github.com/bottlepy/bottleProduct, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/01/msg00019.htmlThird Party Advisory
- https://snyk.io/blog/cache-poisoning-in-popular-open-source-packages/Third Party Advisory
- https://snyk.io/vuln/SNYK-PYTHON-BOTTLE-1017108Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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