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Gentoo Linux Security Advisory GLSA 202012-18 |
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https://security.gentoo.org/ |
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Severity: Low |
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Title: PowerDNS: information disclosure |
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Date: December 23, 2020 |
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Bugs: #744160 |
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ID: 202012-18 |
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Synopsis |
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======== |
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|
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An information disclosure vulnerability in PowerDNS allow remote |
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attackers to obtain sensitive information. |
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|
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Background |
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========== |
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|
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The PowerDNS nameserver is an authoritative-only nameserver which uses |
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a flexible backend architecture. |
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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 < 4.3.1 >= 4.3.1 |
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|
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Description |
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=========== |
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|
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It was discovered that PowerDNS did not properly handle certain unknown |
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records. |
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Impact |
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====== |
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|
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An authorized attacker with the ability to insert crafted records into |
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a zone might be able to leak the content of uninitialized memory. |
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Crafted records cannot be inserted via AXFR. |
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|
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Workaround |
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========== |
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Do not take zone data from untrusted users. |
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Resolution |
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========== |
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All PowerDNS users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-dns/pdns-4.3.1" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2020-17482 |
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https://nvd.nist.gov/vuln/detail/CVE-2020-17482 |
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[ 2 ] PowerDNS Security Advisory 2020-05 |
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https://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-2020-05.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/202012-18 |
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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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|
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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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|
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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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