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Category:   Application (Security)  >   Network Security Services (NSS) Vendors:   Mozilla.org
Network Security Services (NSS) Null Pointer Dereference in ssl3_GatherData() Lets Remote Users Cause the Target Service to Crash
SecurityTracker Alert ID:  1038579
SecurityTracker URL:  http://securitytracker.com/id/1038579
CVE Reference:   CVE-2017-7502   (Links to External Site)
Date:  May 30 2017
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 3.24.0 - 3.30.2
Description:   A vulnerability was reported in Network Security Services (NSS). A remote user can cause the target service to crash.

A remote user can send specially crafted (empty) SSLv2 messages to trigger a null pointer dereference in ssl3_GatherData() and cause the target application using Network Security Services (NSS) to crash.

Impact:   A remote user can cause the target application using NSS to crash.
Solution:   The vendor has issued a source code fix, available at:

https://hg.mozilla.org/projects/nss/rev/55ea60effd0d

Vendor URL:  hg.mozilla.org/projects/nss/rev/55ea60effd0d (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
May 30 2017 (Red Hat Issues Fix) Network Security Services (NSS) Null Pointer Dereference in ssl3_GatherData() Lets Remote Users Cause the Target Service to Crash
Red Hat has issued a fix for Red Hat Enterprise Linux 7.
May 30 2017 (Red Hat Issues Fix) Network Security Services (NSS) Null Pointer Dereference in ssl3_GatherData() Lets Remote Users Cause the Target Service to Crash
Red Hat has issued a fix for Red Hat Enterprise Linux 6.
May 31 2017 (Oracle Issues Fix for Oracle Linux) Network Security Services (NSS) Null Pointer Dereference in ssl3_GatherData() Lets Remote Users Cause the Target Service to Crash
Oracle has issued a fix for Oracle Linux 6 and 7.
May 31 2017 (CentOS Issues Fix) Network Security Services (NSS) Null Pointer Dereference in ssl3_GatherData() Lets Remote Users Cause the Target Service to Crash
CentOS has issued a fix for CentOS 6 and 7.
Jun 21 2017 (Ubuntu Issues Fix) Network Security Services (NSS) Null Pointer Dereference in ssl3_GatherData() Lets Remote Users Cause the Target Service to Crash
Ubuntu has issued a fix for Ubuntu Linux 14.04 LTS, 16.04 LTS, 16.10, and 17.04.
Aug 1 2017 (Ubuntu Issues Fix) Network Security Services (NSS) Null Pointer Dereference in ssl3_GatherData() Lets Remote Users Cause the Target Service to Crash
Ubuntu has issued a fix for Ubuntu Linux 12.04 ESM.



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