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Gentoo: 202012-19 Low: PowerDNS Recursor Denial Of Service

gentoo
Calendar Grey December 23, 2020
Dist Gentoo Esm H88
PowerDNS Recursor exhibits vulnerability leading to Denial of Service risks; an upgrade is necessary as per Gentoo GLSA 202012-19. Check for more information.
A vulnerability in PowerDNS Recursor could lead to a Denial of Service condition.

Summary

It was discovered that it was possible to update the DNSSEC validation state to a bogus state for a cached record via DNS ANY query.

Topics%20covered

Topics Covered

security advisory denial of service gentoo low severity Denial of Service Gentoo Linux dns PowerDNS Recursor powerdns recursor

Resolution

All PowerDNS Recursor users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-dns/pdns-recursor-4.3.5"

References

[ 1 ] CVE-2020-25829 https://nvd.nist.gov/vuln/detail/CVE-2020-25829 [ 2 ] PowerDNS Security Advisory 2020-07 https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-07.html

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/202012-19
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Concerns

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

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Severity: Low
Title: PowerDNS Recursor: Denial of service
Date: December 23, 2020
Bugs: #746923
ID: 202012-19

Topics%20covered

Topics Covered

security advisory denial of service gentoo low severity Denial of Service Gentoo Linux dns PowerDNS Recursor powerdns recursor

Synopsis

A vulnerability in PowerDNS Recursor could lead to a Denial of Service condition.

Background

PowerDNS Recursor is a high-end, high-performance resolving name server.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-dns/pdns-recursor < 4.3.5 >= 4.3.5

Impact

===== A remote attacker could send specially crafted DNS queries to deny DNSSEC validation.

Workaround

There is no known workaround at this time.

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