Bug 1837604 (CVE-2020-12663) - CVE-2020-12663 unbound: infinite loop via malformed DNS answers received from upstream servers
Summary: CVE-2020-12663 unbound: infinite loop via malformed DNS answers received from...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2020-12663
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact: Petr Sklenar
URL:
Whiteboard:
Depends On: 1837609 1840257 1840258 1840259 1840260 1840261 1840262 1840263 1879513
Blocks: 1837616
TreeView+ depends on / blocked
 
Reported: 2020-05-19 17:40 UTC by Guilherme de Almeida Suckevicz
Modified: 2020-10-06 14:22 UTC (History)
6 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in unbound in versions prior to 1.10.1. An infinite loop can be created when malformed DNS answers are received from upstream servers. The highest threat from this vulnerability is to system availability.
Clone Of:
Environment:
Last Closed: 2020-06-08 11:20:31 UTC


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2020:2510 0 None None None 2020-06-10 17:52:54 UTC
Red Hat Product Errata RHBA-2020:2536 0 None None None 2020-06-11 18:11:19 UTC
Red Hat Product Errata RHBA-2020:2537 0 None None None 2020-06-11 18:34:11 UTC
Red Hat Product Errata RHBA-2020:2887 0 None None None 2020-07-09 15:01:05 UTC
Red Hat Product Errata RHSA-2020:2414 0 None None None 2020-06-08 08:24:32 UTC
Red Hat Product Errata RHSA-2020:2416 0 None None None 2020-06-08 09:37:33 UTC
Red Hat Product Errata RHSA-2020:2418 0 None None None 2020-06-08 10:17:12 UTC
Red Hat Product Errata RHSA-2020:2419 0 None None None 2020-06-08 10:24:39 UTC
Red Hat Product Errata RHSA-2020:2640 0 None None None 2020-06-22 07:21:06 UTC
Red Hat Product Errata RHSA-2020:4181 0 None None None 2020-10-06 14:22:45 UTC

Description Guilherme de Almeida Suckevicz 2020-05-19 17:40:02 UTC
Unbound before 1.10.1 has an infinite loop via malformed DNS answers received from upstream servers.

References:
http://www.openwall.com/lists/oss-security/2020/05/19/5
https://nlnetlabs.nl/downloads/unbound/CVE-2020-12662_2020-12663.txt

Comment 1 Guilherme de Almeida Suckevicz 2020-05-19 17:40:27 UTC
Created unbound tracking bugs for this issue:

Affects: fedora-all [bug 1837609]

Comment 4 Riccardo Schirone 2020-06-03 11:26:57 UTC
In reply to comment #2:
> Upstream fix:
> https://github.com/NLnetLabs/unbound/commit/
> ba0f382eee814e56900a535778d13206b86b6d49

According to https://github.com/NLnetLabs/unbound/issues/243#issuecomment-637298509, the changes related to this particular CVE are only those in iterator/iter_scrub.c and util/data/dname.c. The other changes are for CVE-2020-12662.

Comment 5 errata-xmlrpc 2020-06-08 08:24:30 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:2414 https://access.redhat.com/errata/RHSA-2020:2414

Comment 6 errata-xmlrpc 2020-06-08 09:37:29 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:2416 https://access.redhat.com/errata/RHSA-2020:2416

Comment 7 errata-xmlrpc 2020-06-08 10:17:09 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions

Via RHSA-2020:2418 https://access.redhat.com/errata/RHSA-2020:2418

Comment 8 errata-xmlrpc 2020-06-08 10:24:37 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Extended Update Support

Via RHSA-2020:2419 https://access.redhat.com/errata/RHSA-2020:2419

Comment 9 Product Security DevOps Team 2020-06-08 11:20:31 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-12663

Comment 10 errata-xmlrpc 2020-06-22 07:21:04 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2020:2640 https://access.redhat.com/errata/RHSA-2020:2640

Comment 13 errata-xmlrpc 2020-10-06 14:22:43 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.7 Extended Update Support

Via RHSA-2020:4181 https://access.redhat.com/errata/RHSA-2020:4181


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