Apache mod_ssl Null Pointer Dereference May Let Remote Users Deny Service
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SecurityTracker Alert ID: 1015447
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SecurityTracker URL: http://securitytracker.com/id?1015447
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CVE Reference: CVE-2005-3357
(Links to External Site)
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Date: Jan 6 2006
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Impact: Denial of service via network
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Description: A vulnerability was reported in Apache mod_ssl. A remote user can cause the server to crash in certain cases.
When an SSL virtual host is configured with access control and a custom 400 error document, a remote user can send a specially crafted
request to trigger a null pointer dereference. This may cause the server to crash when using the non-default worker
Multi-Processing
Module.
The original bug report is available at:
http://issues.apache.org/bugzilla/show_bug.cgi?id=37791
Hartmut Keil reported
this vulnerability.
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Impact: A remote user can cause denial of service conditions on the target system.
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Solution: No upstream solution was available at the time of this entry.
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Vendor URL: www.modssl.org/ (Links to External Site)
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Cause: Boundary error, 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: Thu, 5 Jan 2006 15:15:14 -0500
Subject: Apache httpd vulnerability
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Red Hat reported:
A NULL pointer dereference flaw in mod_ssl was discovered affecting server
configurations where an SSL virtual host is configured with access control
and a custom 400 error document. A remote attacker could send a carefully
crafted request to trigger this issue which would lead to a crash. This
crash would only be a denial of service if using the non-default worker
MPM. (CVE-2005-3357)
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