Bug 1987001 (CVE-2021-36754) - CVE-2021-36754 pdns: specific query crashes Authoritative Server
Summary: CVE-2021-36754 pdns: specific query crashes Authoritative Server
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2021-36754
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1987002 1987003
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-07-28 16:57 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-07-28 19:07 UTC (History)
3 users (show)

Fixed In Version:
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Last Closed: 2021-07-28 19:07:00 UTC
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Description Guilherme de Almeida Suckevicz 2021-07-28 16:57:46 UTC 
PowerDNS Authoritative Server 4.5.0 (and the alpha/beta/rc1/rc2 prereleases that came before it) will crash with an uncaught out of bounds exception if it receives a query with QTYPE 65535. The offending code was not present in earlier versions, and they are not affected.

Reference:
https://www.openwall.com/lists/oss-security/2021/07/26/2
Comment 1 Guilherme de Almeida Suckevicz 2021-07-28 16:58:10 UTC 
Created pdns tracking bugs for this issue:

Affects: epel-all [bug 1987002]
Affects: fedora-all [bug 1987003]
Comment 2 Product Security DevOps Team 2021-07-28 19:07:00 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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