Bug 1889466 (CVE-2020-25829) - CVE-2020-25829 pdns-recursor: remote attacker can cause the cached records for a given name to be updated to the ‘Bogus’ DNSSEC validation state instead of their actual DNSSEC ‘Secure’ state via a DNS ANY query
Summary: CVE-2020-25829 pdns-recursor: remote attacker can cause the cached records fo...
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2020-25829
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: 1889467 1889469
Blocks:
TreeView+ depends on / blocked
 
Reported: 2020-10-19 18:01 UTC by Guilherme de Almeida Suckevicz
Modified: 2020-10-19 20:22 UTC (History)
2 users (show)

Fixed In Version:
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Last Closed: 2020-10-19 20:22:14 UTC


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Description Guilherme de Almeida Suckevicz 2020-10-19 18:01:16 UTC
An issue has been found in PowerDNS Recursor before 4.1.18, 4.2.x before 4.2.5, and 4.3.x before 4.3.5. A remote attacker can cause the cached records for a given name to be updated to the Bogus DNSSEC validation state, instead of their actual DNSSEC Secure state, via a DNS ANY query. This results in a denial of service for installation that always validate (dnssec=validate), and for clients requesting validation when on-demand validation is enabled (dnssec=process).

Reference:
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-07.html

Comment 1 Guilherme de Almeida Suckevicz 2020-10-19 18:03:04 UTC
Created pdns-recursor tracking bugs for this issue:

Affects: epel-all [bug 1889467]
Affects: fedora-all [bug 1889469]

Comment 2 Product Security DevOps Team 2020-10-19 20:22:14 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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