description: In Apache httpd 2.2.0 to 2.4.29, when generating an HTTP Digest authentication challenge, the nonce sent to prevent reply attacks was not correctly generated using a pseudo-random seed. In a cluster of servers using a common Digest authentication configuration, HTTP requests could be replayed across servers by an attacker without detection.
problem types: Authentication replay mitigation
affected:
{
product: Apache HTTP Server
vendor: Apache Software Foundation
versions:
status: affected, version: 2.0.42 to 2.4.29
}