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Bug 1588185 (CVE-2018-10851) - CVE-2018-10851 pdns: Memory leak while parsing malformed records
Summary: CVE-2018-10851 pdns: Memory leak while parsing malformed records
Alias: CVE-2018-10851
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1649031 1649032 1649042 1649043
TreeView+ depends on / blocked
Reported: 2018-06-06 21:19 UTC by Pedro Sampaio
Modified: 2021-10-25 09:45 UTC (History)
4 users (show)

Fixed In Version: pdns-recursor 4.1.5, pdns-recursor 4.0.9, pdns 4.1.5, pdns 4.0.6
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Clone Of:
Last Closed: 2021-10-25 09:45:51 UTC

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Description Pedro Sampaio 2018-06-06 21:19:58 UTC
A vulnerability was in found in PowerDNS Authoritative Server (from 3.3.0 up to and including 4.1.3) and PowerDNS Recursor (from 3.2 up to and including 4.1.3). The issue is a memory leak occurring while parsing some malformed records, due to the fact that some memory is allocated parsing a record and is not always properly released if the record is not valid.

In the authoritative server, it allows an authorized user to cause a denial of service by inserting specially crafted records in a zone under their control, then sending DNS queries for that zone.

In the recursor, it allows a malicious auth server to cause a denial of service by sending specially crafted records in response to a legitimate query by an authorized user.


Comment 1 Pedro Sampaio 2018-11-12 18:29:12 UTC
Created pdns tracking bugs for this issue:

Affects: epel-all [bug 1649032]
Affects: fedora-all [bug 1649031]

Comment 2 Pedro Sampaio 2018-11-12 18:46:48 UTC
Created pdns-recursor tracking bugs for this issue:

Affects: epel-all [bug 1649043]
Affects: fedora-all [bug 1649042]

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