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Gentoo Linux Security Advisory GLSA 202012-19 |
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https://security.gentoo.org/ |
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Severity: Low |
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Title: PowerDNS Recursor: Denial of service |
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Date: December 23, 2020 |
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Bugs: #746923 |
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ID: 202012-19 |
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Synopsis |
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======== |
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|
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A vulnerability in PowerDNS Recursor could lead to a Denial of Service |
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condition. |
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Background |
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========== |
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|
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PowerDNS Recursor is a high-end, high-performance resolving name |
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server. |
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|
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 net-dns/pdns-recursor < 4.3.5 >= 4.3.5 |
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Description |
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=========== |
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|
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It was discovered that it was possible to update the DNSSEC validation |
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state to a bogus state for a cached record via DNS ANY query. |
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|
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Impact |
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====== |
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|
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A remote attacker could send specially crafted DNS queries to deny |
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DNSSEC validation. |
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Workaround |
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========== |
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There is no known workaround at this time. |
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Resolution |
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========== |
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All PowerDNS Recursor users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-dns/pdns-recursor-4.3.5" |
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|
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References |
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========== |
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[ 1 ] CVE-2020-25829 |
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https://nvd.nist.gov/vuln/detail/CVE-2020-25829 |
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[ 2 ] PowerDNS Security Advisory 2020-07 |
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https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-07.html |
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Availability |
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============ |
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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https://security.gentoo.org/glsa/202012-19 |
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|
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Concerns? |
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========= |
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users' machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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https://bugs.gentoo.org. |
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License |
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======= |
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Copyright 2020 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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|
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https://creativecommons.org/licenses/by-sa/2.5 |
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