Title: Qualcomm POP Server Buffer Overflow Vulnerability
Severity: CRITICAL
Description:
A number of buffer-overflow issues reside in versions prior to 2.5 of Qualcomm's 'qpopper' program. Exploiting this issue allows a remote attacker to execute arbitrary commands on hosts that are running a vulnerable version.
To determine if you are vulnerable, telnet to port 110 on the possibly vulnerable host. A banner appears, informing you of the version of the pop server. For example:
% telnet yourmailhost.your.domain.com 110
Trying 123.123.123.123
Connected to mailhost
+OK QPOP (version 2.4) at yourmailhost.your.domain.com starting
If any version prior to 2.5 is reported, including 2.5 beta, you should upgrade immediately to the latest version.
The vulnerability occurs because of the way 'qpopper' handles user-supplied input for a number of POP commands, including, but not limited to, USER, PASS, as well as any line containing in excess of 1024 characters.
This vulnerability was discussed extensively on the Bugtraq mailing list; full exploits were posted for Linux and *BSD operating systems.
Affected Products:
- Qualcomm qpopper 2.4.0
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