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The Internet threat alert status is currently normal. At present, no major epidemics or other serious incidents have been recorded by Kaspersky Lab’s monitoring service. Internet threat level: 1

Stunnel Unspecified Heap Corruption Vulnerability


Secunia ID

SA45705

CVE-ID

CVE-2011-2940

Release Date

19 Aug 2011

Last Change

22 Aug 2011

Criticality

Highly Critical

Solution Status

Vendor Patch

Software

Stunnel 4.x

Where

From remote

Impact
DoS (Denial of Service)

This includes vulnerabilities ranging from excessive resource consumption (e.g. causing a system to use a lot of memory) to crashing an application or an entire system.

System access

This covers vulnerabilities where malicious people are able to gain system access and execute arbitrary code with the privileges of a local user.

Description

A vulnerability has been reported in Stunnel, which can be exploited by malicious people to cause a DoS (Denial of Service) and potentially compromise a vulnerable system.

The vulnerability is caused due to an unspecified error and can be exploited to corrupt heap memory.

The vulnerability is reported in versions 4.40 and 4.41.

Solution

Update to version 4.42.

Reported by

Reported by the vendor.

Original Advisory

http://www.stunnel.org/pipermail/stunnel-announce/2011-August/000059.html