Date:         Thu, 25 Mar 2010 11:05:25 -0500
Reply-To:     Troy Dawson 
Sender:       Security Errata for Scientific Linux
              
From:         Troy Dawson 
Subject:      Security ERRATA Moderate: nss on SL4.x, SL5.x i386/x86_64
Comments: To: "scientific-linux-errata@fnal.gov"
          

Synopsis:	Moderate: nss security update
Issue date:	2010-03-25
CVE Names:	CVE-2009-3555

CVE-2009-3555 TLS: MITM attacks via session renegotiation

A flaw was found in the way the TLS/SSL (Transport Layer Security/Secure
Sockets Layer) protocols handled session renegotiation. A 
man-in-the-middle attacker could use this flaw to prefix arbitrary plain 
text to a client's session (for example, an HTTPS connection to a 
website). This could force the server to process an attacker's request 
as if authenticated using the victim's credentials. This update 
addresses this flaw by implementing the TLS Renegotiation Indication 
Extension, as defined in RFC 5746. (CVE-2009-3555)

Refer to the following Knowledgebase article for additional details 
about this flaw: 
All running applications using the NSS library must be restarted for 
this update to take effect.

SL 4.x

      SRPMS:
nspr-4.8.4-1.1.el4_8.src.rpm
nss-3.12.6-1.el4_8.src.rpm
      i386:
nspr-4.8.4-1.1.el4_8.i386.rpm
nspr-devel-4.8.4-1.1.el4_8.i386.rpm
nss-3.12.6-1.el4_8.i386.rpm
nss-devel-3.12.6-1.el4_8.i386.rpm
nss-tools-3.12.6-1.el4_8.i386.rpm
      x86_64:
nspr-4.8.4-1.1.el4_8.i386.rpm
nspr-4.8.4-1.1.el4_8.x86_64.rpm
nspr-devel-4.8.4-1.1.el4_8.x86_64.rpm
nss-3.12.6-1.el4_8.i386.rpm
nss-3.12.6-1.el4_8.x86_64.rpm
nss-devel-3.12.6-1.el4_8.x86_64.rpm
nss-tools-3.12.6-1.el4_8.x86_64.rpm

SL 5.x

      SRPMS:
nspr-4.8.4-1.el5_4.src.rpm
nss-3.12.6-1.el5_4.src.rpm
      i386:
nspr-4.8.4-1.el5_4.i386.rpm
nspr-devel-4.8.4-1.el5_4.i386.rpm
nss-3.12.6-1.el5_4.i386.rpm
nss-devel-3.12.6-1.el5_4.i386.rpm
nss-pkcs11-devel-3.12.6-1.el5_4.i386.rpm
nss-tools-3.12.6-1.el5_4.i386.rpm
      x86_64:
nspr-4.8.4-1.el5_4.i386.rpm
nspr-4.8.4-1.el5_4.x86_64.rpm
nspr-devel-4.8.4-1.el5_4.i386.rpm
nspr-devel-4.8.4-1.el5_4.x86_64.rpm
nss-3.12.6-1.el5_4.i386.rpm
nss-3.12.6-1.el5_4.x86_64.rpm
nss-devel-3.12.6-1.el5_4.i386.rpm
nss-devel-3.12.6-1.el5_4.x86_64.rpm
nss-pkcs11-devel-3.12.6-1.el5_4.i386.rpm
nss-pkcs11-devel-3.12.6-1.el5_4.x86_64.rpm
nss-tools-3.12.6-1.el5_4.x86_64.rpm

-Connie Sieh
-Troy Dawson

SciLinux: CVE-2009-3555 Moderate: nss SL4.x, SL5.x i386/x86_64

Moderate: nss security update

Summary

A flaw was found in the way the TLS/SSL (Transport Layer Security/SecureSockets Layer) protocols handled session renegotiation. Aman-in-the-middle attacker could use this flaw to prefix arbitrary plaintext to a client's session (for example, an HTTPS connection to awebsite). This could force the server to process an attacker's requestas if authenticated using the victim's credentials. This updateaddresses this flaw by implementing the TLS Renegotiation IndicationExtension, as defined in RFC 5746. (CVE-2009-3555)Refer to the following Knowledgebase article for additional detailsabout this flaw:All running applications using the NSS library must be restarted forthis update to take effect.



Security Fixes

Severity
Issued Date: : 2010-03-25
CVE Names: CVE-2009-3555
CVE-2009-3555 TLS: MITM attacks via session renegotiation

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