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Secunia Advisory SA8194

Sendmail remotely exploitable vulnerability
Secunia Advisory SA8194
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Release Date 2003-03-03
Last Update 2003-03-06
   
Popularity 15,826 views
Comments 0 comments

Criticality level Extremely criticalExtremely critical
Impact System access
Where From remote
Authentication level Available in Customer Area
   
Report reliability Available in Customer Area
Solution Status Vendor Patch
   
Systems affected Available in Customer Area
Approve distribution Available in Customer Area
   
Operating System
AIX 4.x
AIX 5.x
Apple Macintosh OS X
FreeBSD 4.x
FreeBSD 5.x
HP-UX 10.x
HP-UX 11.x
Red Hat Enterprise Linux AS 2.1
Red Hat Enterprise Linux WS 2.1
Red Hat Linux 6.2
Red Hat Linux 7.0
Red Hat Linux 7.1
Red Hat Linux 7.2
Red Hat Linux 7.3
Red Hat Linux 8.0
SGI IRIX 6.5.x
Sun Solaris 2.6.x
Sun Solaris 7.x
Sun Solaris 8.x
Sun Solaris 9.x

Software:
Sendmail 8.x
Sendmail Message Store/SAMS 1.x
Sendmail Switch 2.x
Sendmail Switch 3.x

Secunia CVSS Score Available in Customer Area
CVE Reference(s) CVE-2002-1337 CVSS available in Customer Area
  

Description

Sendmail has been found vulnerable to an issue that could lead to remote root compromise.

Not much details has been released at current, but the release of this information has been co-ordinated between multiple vendors.

It seems that the vulnerability is caused by a boundary error in the function "crackaddr()" when parsing "from:" address header fields containing multiple brackets "<>". A malicious person would be able to exploit the vulnerability by crafting an email with a special "from:" address header field, which could lead to a heap overflow and execution of arbitrary code with "root" privileges.

Sendmail processes as much as 50-75% of all email on the Internet.

Secunia has chosen to rate this issue as extremely critical due to the nature of the service.

The vulnerability could still be exploited if another mail service like qmail initially receives the email and forwards it to a vulnerable sendmail based system.


Solution
Upgrade to sendmail version 8.12.8
Further details available in Customer Area

Provided and/or discovered by
ISS

Changelog
Further details available in Customer Area

Original Advisory
http://www.iss.net/issEn/delivery/xforce/alertdetail.jsp?oid=21950

Other references
Further details available in Customer Area

Deep Links
Links available in Customer Area


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 remotely exploitable vulnerability
 
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