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CVE-2021-23336

Web Cache Poisoning PUBLISHED

Description (CNA)

The package python/cpython from 0 and before 3.6.13, from 3.7.0 and before 3.7.10, from 3.8.0 and before 3.8.8, from 3.9.0 and before 3.9.2 are vulnerable to Web Cache Poisoning via urllib.parse.parse_qsl and urllib.parse.parse_qs 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.

Affected (CNA)

Vendor / productVersions
n/a / python/cpythonaffected 0 before unspecified; affected unspecified before 3.6.13; affected 3.7.0 before unspecified; affected unspecified before 3.7.10; affected 3.8.0 before unspecified; affected unspecified before 3.8.8; affected 3.9.0 before unspecified; affected unspecified before 3.9.2

CWE

No CWE identifiers supplied.

References

ADP enrichment

CVE

No English description supplied.

CISA-ADP

No English description supplied.

No references supplied.

siemens-SADP

No English description supplied.