Debian Security Advisory
DSA-049-1 cfingerd -- remote printf format attack
- Date Reported:
- 19 Apr 2001
- Affected Packages:
- Security database references:
- In the Bugtraq database (at SecurityFocus): BugTraq ID 2576.
In Mitre's CVE dictionary: CVE-2001-0609.
- More information:
Megyer Laszlo report on Bugtraq that the cfingerd daemon as distributed
with Debian GNU/Linux 2.2 was not careful in its logging code. By
combining this with an off-by-one error in the code that copied the
username from an ident response cfingerd could be exploited by a remote
user. Since cfingerd does not drop its root privileges until after
it has determined which user to finger an attacker can gain
This has been fixed in version 1.4.1-1.1, and we recommend that you upgrade your cfingerd package immediately.
Note: this advisory was previously posted as DSA-048-1 by mistake.
- Fixed in:
Debian GNU/Linux 2.2 (potato)
- Intel IA-32:
- Motorola 680x0:
- Sun Sparc: