Title: Kaspersky Anti-Virus for Sendmail Remote Format String Vulnerability
Severity: HIGH
Description:
Kaspersky Anti-Virus for Linux Servers is an anti-virus system for file and application servers and also for e-mail gateways such as Sendmail, Qmail and Postfix.
A format string vulnerability exists in the 'avpkeeper' program included with Kaspersky Anti-Virus for Sendmail. The program is launched from Sendmail to scan and disinfect messages.
In some configurations, the syslog() C library function is used by 'avpkeeper' as a logging facility. The syslog() function provides formatted output functionality through the use of the *printf() family of functions.
The problem occurs when an e-mail address containing format specifiers is logged with this facility. The problem is likely due to e-mail addresses being passed as the format argument to the syslog() function.
As a result, an attacker could use this behaviour to overwrite arbitrary locations in memory. This could result in a denial of service or the execution of arbitrary code on a host running the 'avpkeeper' program.
Affected Products:
- Kaspersky Labs Kaspersky Antivirus for Linux Servers 3.5.135.2
References:
- Kaspersky Labs: Kaspersky Antivirus Homepage
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