Bug 1189406 - ntp: improper vallen validation in ntp_crypto.c
Summary: ntp: improper vallen validation in ntp_crypto.c
Keywords:
Status: CLOSED DUPLICATE of bug 1184573
Alias: None
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks: 1189411
TreeView+ depends on / blocked
 
Reported: 2015-02-05 09:11 UTC by Martin Prpič
Modified: 2021-02-17 05:41 UTC (History)
2 users (show)

Fixed In Version: ntp 4.2.8p1
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-02-05 09:49:26 UTC
Embargoed:

Attachments (Terms of Use)

Description Martin Prpič 2015-02-05 09:11:14 UTC 
It was found that several functions in NTP's ntp_crypto.c did not properly validate the vallen packet value. A remote attacker could use this flaw to cause an information leak or crash ntpd via a specially crafted vallen packet.

Upstream issue:

http://bugs.ntp.org/show_bug.cgi?id=2671

External References:

http://support.ntp.org/bin/view/Main/SecurityNotice#vallen_is_not_validated_in_sever
Comment 1 Martin Prpič 2015-02-05 09:21:35 UTC 
Created ntp tracking bugs for this issue:

Affects: fedora-all [bug 1189412]
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