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50 lines
1.7 KiB
50 lines
1.7 KiB
4 years ago
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
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<glsa id="202101-38">
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<title>NSD: Symbolic link traversal</title>
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<synopsis>A vulnerability was discovered in NSD which could allow a local
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attacker to cause a Denial of Service condition.
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</synopsis>
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<product type="ebuild">nsd</product>
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<announced>2021-01-29</announced>
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<revised count="1">2021-01-29</revised>
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<bug>758977</bug>
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<access>local</access>
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<affected>
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<package name="net-dns/nsd" auto="yes" arch="*">
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<unaffected range="ge">4.3.4</unaffected>
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<vulnerable range="lt">4.3.4</vulnerable>
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</package>
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</affected>
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<background>
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<p>An authoritative only, high performance, open source name server</p>
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</background>
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<description>
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<p>A local vulnerability was discovered that would allow for a local
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symlink attack due to how NSD handles PID files.
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</p>
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</description>
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<impact type="normal">
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<p>A local attacker could cause a Denial of Service condition.</p>
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</impact>
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<workaround>
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<p>There is no known workaround at this time.</p>
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</workaround>
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<resolution>
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<p>All NSD users should upgrade to the latest version:</p>
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<code>
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# emerge --sync
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# emerge --ask --oneshot --verbose ">=net-dns/nsd-4.3.4"
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</code>
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</resolution>
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<references>
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<uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-28935">CVE-2020-28935</uri>
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<uri link="https://www.nlnetlabs.nl/downloads/nsd/CVE-2020-28935.txt">
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Upstream advisory
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</uri>
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</references>
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<metadata tag="requester" timestamp="2020-04-22T15:47:22Z">whissi</metadata>
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<metadata tag="submitter" timestamp="2021-01-29T00:05:16Z">b-man</metadata>
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</glsa>
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