Netkit telnetd implementation buffer overflow
| telnetd-netkit-bo (17540) |  High Risk |
Description:
Telnetd is vulnerable to a buffer overflow. A remote attacker could overflow a buffer and execute arbitrary code on the system or possibly cause a denial of service.
Consequences:
Gain Access
Remedy:
For Debian GNU/Linux 3.0 (alias woody):
Upgrade to the latest netkit-telnet package (0.17-18woody2 or later), as listed in DSA-556-2. See References.
For Debian GNU/Linux 3.0 (alias woody):
Upgrade to the latest netkit-telnet-ssl package (0.17.17+0.1-2woody2 or later), as listed in DSA-569-1. See References.
For Ubuntu Linux:
Refer to USN-101-1 for patch, upgrade or suggested workaround information. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
References:
- BugTraq Mailing List, Sat Sep 18 2004 - 14:57:19 CDT: Debian netkit telnetd vulnerability.
- BID-11313: Debian GNU/Linux Telnetd Invalid Memory Handling Vulnerability
- CVE-2004-0911: telnetd for netkit 0.17 and earlier, and possibly other versions, on Debian GNU/Linux allows remote attackers to cause a denial of service (free of an invalid pointer), a different vulnerability than CVE-2001-0554.
- DSA-556: netkit-telnet -- invalid free(3)
- DSA-569: netkit-telnet-ssl -- invalid free(3)
- USN-101-1: telnet vulnerabilities
Platforms Affected:
- Canonical Ubuntu 4.10
- Debian Debian Linux 3.0
- Netkit netkit-telnetd 0.17
Reported:
Sep 18, 2004
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