Bug 1413517 (CVE-2016-2120) - CVE-2016-2120 pdns: crafted zone record can cause a denial of service
Summary: CVE-2016-2120 pdns: crafted zone record can cause a denial of service
Alias: CVE-2016-2120
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1413518 1413519 1413520 1413521
TreeView+ depends on / blocked
Reported: 2017-01-16 09:31 UTC by Andrej Nemec
Modified: 2019-09-29 14:04 UTC (History)
4 users (show)

Fixed In Version: pdns 3.4.11, pdns 4.0.4, pdns-recursor 3.7.4, pdns-recursor 4.0.4
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Clone Of:
Last Closed: 2019-06-08 03:05:34 UTC

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Description Andrej Nemec 2017-01-16 09:31:18 UTC
An issue has been found in PowerDNS Authoritative Server allowing an authorized user to crash the server by inserting a specially crafted record in a zone under their control then sending a DNS query for that record. The issue is due to an integer overflow when checking if the content of the record matches the expected size, allowing an attacker to cause a read past the buffer boundary.


Comment 1 Andrej Nemec 2017-01-16 09:32:35 UTC
Created pdns tracking bugs for this issue:

Affects: fedora-all [bug 1413518]
Affects: epel-all [bug 1413520]

Comment 2 Andrej Nemec 2017-01-16 09:32:40 UTC
Created pdns-recursor tracking bugs for this issue:

Affects: fedora-all [bug 1413519]
Affects: epel-all [bug 1413521]

Comment 3 Product Security DevOps Team 2019-06-08 03:05:34 UTC
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.

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