Spring Security: SubjectDnX509PrincipalExtractor does not correctly handle certain malformed X.509 certificate CN values, which can le…
Summary
SubjectDnX509PrincipalExtractor does not correctly handle certain malformed X.509 certificate CN values, which can lead to reading the wrong value for the username. In a carefully crafted certificate, this can lead to an attacker impersonating another user. Affected versions: Spring Security 5.7.0 through 5.7.24; 5.8.0 through 5.8.26; 6.3.0 through 6.3.17; 6.4.0 through 6.4.17; 6.5.0 through 6.5.10.
- 5.7.0
- 5.8.0
- 6.3.0
- 6.4.0
- 6.5.0
Official advisory · high-confidence parse· fetched 7 hours ago·verify at source
Mitigation
Mitigation steps weren't captured by the parser for this advisory — this is a parsing gap, not a statement that no fix exists. Read the vendor advisory below for the authoritative guidance.
Official advisory · high-confidence parse· fetched 7 hours ago·verify at source
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