Bug 1274257 (CVE-2015-7849)

Summary: CVE-2015-7849 ntp: trusted keys memory corruption vulnerability
Product: [Other] Security Response Reporter: Martin Prpič <mprpic>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: mlichvar, sardella, slawomir
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: ntp 4.2.8p4 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2015-10-23 07:53:09 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On:    
Bug Blocks: 1260670    

Description Martin Prpič 2015-10-22 11:30:01 UTC
The following flaw was found in ntpd:

An exploitable use-after-free vulnerability exists in the password management functionality of the Network Time Protocol. A specially crafted key file could cause a buffer overflow resulting in memory corruption. An attacker could provide a malicious password file to trigger this vulnerability.

External References:

http://talosintel.com/reports/TALOS-2015-0054/
http://support.ntp.org/bin/view/Main/SecurityNotice#October_2015_NTP_Security_Vulner

Comment 1 Martin Prpič 2015-10-23 07:53:09 UTC
Statement:

This issue did not affect the versions of ntp as shipped with Red Hat Enterprise Linux 5, 6, and 7 as these version do not include the affected code.