Description
mod_usertrack in Apache 1.3.11 through 1.3.20 generates session ID's using predictable information including host IP address, system time and server process ID, which allows local users to obtain session ID's and bypass authentication when these session ID's are used for authentication.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | apache2 | No fix yet | — |
| Debian 13 | apache2 | No fix yet | — |
| Debian 12 | apache2 | No fix yet | — |
References
- 3521 vdb-entry
- apache-modusertrack-predicticable-sessionid(7494) vdb-entry
- 20011113 Brute-Forcing Web Application Session IDs mailing-list