Title: SuSE identd Denial of Service Attack
Severity: LOW
Description:
In the inetd.conf under certain distributions of SuSE Linux the in.identd daemon is started with the -w -t120 option. This means that one identd process waits 120 seconds after answering the first request to answer the next request. If a malicious remote attacker starts a large number of ident requests in a short period of time it will force the target machine to start multiple daemons because the initial daemon is in a time wait state. This can eventually lead the machine to starve itself of memory resulting essentially in a machine halt.
Affected Products:
- S.u.S.E. Linux 4.4.0
- S.u.S.E. Linux 4.4.1
- S.u.S.E. Linux 5.0.0
- S.u.S.E. Linux 5.1.0
- S.u.S.E. Linux 5.2.0
- S.u.S.E. Linux 5.3.0
- S.u.S.E. Linux 6.0.0
- S.u.S.E. Linux 6.1.0
- S.u.S.E. Linux 6.2.0
- Slackware Linux 3.2.0
- Slackware Linux 3.6.0
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