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HistoryMay 14, 2022 - 1:17 a.m.

Authentication Bypass in Apache Tomcat

2022-05-1401:17:02
Google
osv.dev
124
apache tomcat
http digest
authentication
replay attacks
network sniffing
access restrictions

EPSS

0.002

Percentile

55.4%

The HTTP Digest Access Authentication implementation in Apache Tomcat 5.5.x before 5.5.34, 6.x before 6.0.33, and 7.x before 7.0.12 does not have the expected countermeasures against replay attacks, which makes it easier for remote attackers to bypass intended access restrictions by sniffing the network for valid requests, related to lack of checking of nonce (aka server nonce) and nc (aka nonce-count or client nonce count) values.