Bug 1850530 (CVE-2020-15025) - CVE-2020-15025 ntp: Resource exhaustion via memory leak with CMAC keys
Summary: CVE-2020-15025 ntp: Resource exhaustion via memory leak with CMAC keys
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2020-15025
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
: 1852114 (view as bug list)
Depends On: 1850531
Blocks: 1850532 1852116
TreeView+ depends on / blocked
 
Reported: 2020-06-24 12:56 UTC by Pedro Sampaio
Modified: 2023-10-06 20:48 UTC (History)
3 users (show)

Fixed In Version: ntp 4.2.8p15, ntp 4.3.101
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Clone Of:
Environment:
Last Closed: 2020-06-29 06:35:00 UTC
Embargoed:

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Description Pedro Sampaio 2020-06-24 12:56:44 UTC 
A flaw was found in ntp before version 4.2.8p15. Systems that use a CMAC algorithm in ntp.keys will not release a bit of memory on each packet that uses a CMAC keyid, eventually causing ntpd to run out of memory and fail.

References:

http://support.ntp.org/bin/view/Main/SecurityNotice#June_2020_ntp_4_2_8p15_NTP_Relea
http://support.ntp.org/bin/view/Main/NtpBug3661
Comment 1 Pedro Sampaio 2020-06-24 12:57:04 UTC 
Created ntp tracking bugs for this issue:

Affects: fedora-all [bug 1850531]
Comment 2 Pedro Sampaio 2020-06-24 12:57:08 UTC 
Created ntp tracking bugs for this issue:

Affects: fedora-all [bug 1850531]
Comment 3 Huzaifa S. Sidhpurwala 2020-06-29 06:31:43 UTC 
Statement:

As per upstream, this issue only affects ntp-4.2.8p11p to ntp-4.2.8p14p, and 4.3.97 to 4.3.100. These packages versions do not ship with any Red Hat products, therefore they are not affected by this flaw.
Comment 4 Huzaifa S. Sidhpurwala 2020-06-29 06:31:47 UTC 
External References:

http://support.ntp.org/bin/view/Main/SecurityNotice#June_2020_ntp_4_2_8p15_NTP_Relea
http://support.ntp.org/bin/view/Main/NtpBug3661
Comment 5 Doran Moppert 2020-07-08 01:51:18 UTC 
*** Bug 1852114 has been marked as a duplicate of this bug. ***
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