Xtell long string buffer overflows
| xtell-bo (8312) |  High Risk |
Description:
The Xtell package is vulnerable to a buffer overflow. By sending long strings to the Xtell client, a remote attacker can overflow a buffer and execute arbitrary code on the system.
Consequences:
Gain Access
Remedy:
For Debian GNU/Linux 2.2 (potato):
Upgrade to the latest version of xtell (1.91.1 or later), as listed in DSA 121-1. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
References:
- BugTraq Mailing List, Wed Feb 27 2002 - 04:31:29 CST: Remote exploit against xtelld and other fun.
- BID-4193: xtell Multiple Remote Buffer Overflow Vulnerabilities
- CVE-2002-0332: Buffer overflows in xtell (xtelld) 1.91.1 and earlier, and 2.x before 2.7, allows remote attackers to execute arbitrary code via (1) a long DNS hostname that is determined using reverse DNS lookups, (2) a long AUTH string, or (3) certain data in the xtell request.
- DSA-121: xtell -- buffer overflow
Platforms Affected:
- Debian Debian Linux 2.2
- Xtell Xtell 2.6.1
Reported:
Feb 27, 2002
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For corrections or additions please email xforce@iss.net