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Insecure Library Loading
Highly critical

Sendmail Signal Handling Memory Corruption Vulnerability

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Release Date:  2006-03-23    Views:  34,733

Secunia Advisory SA19342

Where:

From remote

Impact:

System access

Solution Status:

Vendor Patch

CVE Reference(s):

Description


ISS X-Force has reported a vulnerability in Sendmail, which can be exploited by malicious people to compromise a vulnerable system.

The vulnerability is caused due to a signal handling error when receiving and processing mail data from clients. This can be exploited to corrupt memory by sending specially crafted data at certain time intervals.

Successful exploitation allows execution of arbitrary code with the privileges of the sendmail server daemon.

The vulnerability has been reported in the following products:
* Sendmail 8.13.5 and prior
* Sendmail 8.12.11 and prior
* Sendmail Sentrion 1.1
* Sendmail Switch 2.x, 3.0.x, and 3.1.x (Solaris, Linux, AIX, and HP-UX)
* Sendmail Managed MTA 2.x, 3.0.x, and 3.1.x (Solaris, Linux, AIX, and HP-UX)
* Sendmail Multi-Switch 2.x, 3.0.x, and 3.1.x (Solaris, Linux, AIX, and HP-UX)
* Sendmail Message Store/SAMS 1.2.x, 2.0.x, 2.1.x, and 2.2.x (Solaris, Linux, AIX, and HP-UX)
* Intelligent Quarantine 3.0 (Solaris or Linux)


Solution:
Update to version 8.13.6 or apply patch.

Further details available to Secunia VIM customers

Provided and/or discovered by:
Mark Dowd, ISS X-Force.

Original Advisory:
ISS X-Force:
http://xforce.iss.net/xforce/alerts/id/216

Sendmail.org:
http://www.sendmail.org/8.13.6.html

Sendmail.com:
http://www.sendmail.com/company/advisory/

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Sendmail Signal Handling Memory Corruption Vulnerability

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