Scientific Linux: Moderate Neon Security Update for DoS and MITM Issues

Date: Tue, 22 Sep 2009 14:25:14 -0500
Reply-To: Troy Dawson 
Sender: Security Errata for Scientific Linux
 
From: Troy Dawson 
Subject: Security ERRATA Moderate: neon on SL4.x, SL5.x i386/x86_64
Comments: To: "This email address is being protected from spambots. You need JavaScript enabled to view it."
 

Synopsis:	Moderate: neon security update
Issue date:	2009-09-21
CVE Names:	CVE-2009-2473 CVE-2009-2474

CVE-2009-2473 neon, gnome-vfs2 embedded neon: billion laughs DoS attack
CVE-2009-2474 neon: Improper verification of x509v3 certificate with
NULL (zero) byte in certain fields

It was discovered that neon is affected by the previously published
"null prefix attack", caused by incorrect handling of NULL characters in
X.509 certificates. If an attacker is able to get a carefully-crafted
certificate signed by a trusted Certificate Authority, the attacker
could use the certificate during a man-in-the-middle attack and
potentially confuse an application using the neon library into accepting
it by mistake. (CVE-2009-2474)

A denial of service flaw was found in the neon Extensible Markup
Language (XML) parser. A remote attacker (malicious DAV server) could
provide a specially-crafted XML document that would cause excessive
memory and CPU consumption if an application using the neon XML parser
was tricked into processing it. (CVE-2009-2473)

Applications using the neon HTTP and WebDAV client library, such as
cadaver, must be restarted for this update to take effect.

SL 4.x

 SRPMS:
neon-0.24.7-4.el4_8.2.src.rpm
 i386:
neon-0.24.7-4.el4_8.2.i386.rpm
neon-devel-0.24.7-4.el4_8.2.i386.rpm
 x86_64:
neon-0.24.7-4.el4_8.2.i386.rpm
neon-0.24.7-4.el4_8.2.x86_64.rpm
neon-devel-0.24.7-4.el4_8.2.x86_64.rpm

SL 5.x

 SRPMS:
neon-0.25.5-10.el5_4.1.src.rpm
 i386:
neon-0.25.5-10.el5_4.1.i386.rpm
neon-devel-0.25.5-10.el5_4.1.i386.rpm
 x86_64:
neon-0.25.5-10.el5_4.1.i386.rpm
neon-devel-0.25.5-10.el5_4.1.i386.rpm

-Connie Sieh
-Troy Dawson