Sendmail May Crash When Processing Mail with a Long Header
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SecurityTracker Alert ID: 1016753
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SecurityTracker URL: http://securitytracker.com/id?1016753
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CVE Reference: CVE-2006-4434
(Links to External Site)
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OSVDB Reference: 28193
(Links to External Site)
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Updated: Oct 11 2006
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Original Entry Date: Aug 25 2006
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Impact: Denial of service via network
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Fix Available: Yes
Vendor Confirmed: Yes
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Version(s): 8.13.7 and prior versions
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Description: A vulnerability was reported in Sendmail. A remote user can cause denial of service conditions.
A remote user can send e-mail with specially crafted (and very long) header lines to trigger a "use-after-free" flaw and cause the
target sendmail service to crash.
Moritz Jodeit reported this vulnerability.
[Editor's note: The vendor reported on August
9, 2006 that a potential "crash" had been corrected, but the vendor did not describe the nature of the crash. OpenBSD reported
the security relevant nature of the crash on August 25, 2006.]
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Impact: A remote user can cause sendmail to crash.
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Solution: The vendor issued a fixed version (8.13.8) on August 9, 2006, available at:
http://www.sendmail.org/releases/8.13.8.html
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Vendor URL: www.sendmail.org/releases/8.13.8.html (Links to External Site)
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Cause: State error
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Underlying OS: Linux (Any), UNIX (Any)
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Message History:
This archive entry has one or more follow-up message(s) listed below.
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Source Message Contents
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Date: Fri, 25 Aug 2006 15:06:34 -0400
Subject: Sendmail denial of service
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Corrected in 8.13.8 (August 9, 2006)
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