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54 lines
1.9 KiB
54 lines
1.9 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="202012-21">
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<title>Mozilla Network Security Service (NSS): Denial of service</title>
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<synopsis>A vulnerability in NSS might allow remote attackers to cause a
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Denial of Service condition.
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</synopsis>
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<product type="ebuild">nss</product>
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<announced>2020-12-23</announced>
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<revised count="1">2020-12-23</revised>
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<bug>750254</bug>
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<access>remote</access>
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<affected>
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<package name="dev-libs/nss" auto="yes" arch="*">
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<unaffected range="ge">3.58</unaffected>
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<vulnerable range="lt">3.58</vulnerable>
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</package>
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</affected>
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<background>
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<p>The Mozilla Network Security Service (NSS) is a library implementing
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security features like SSL v.2/v.3, TLS, PKCS #5, PKCS #7, PKCS #11, PKCS
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#12, S/MIME and X.509 certificates.
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</p>
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</background>
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<description>
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<p>A flaw was found in the way Mozilla Network Security Service (NSS)
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handled CCS (ChangeCipherSpec) messages in TLS 1.3.
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</p>
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</description>
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<impact type="low">
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<p>A remote attacker could send multiple crafted CSS messages in row after
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ClientHello message to a server application linked against NSS library,
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possibly resulting in a Denial of Service condition.
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</p>
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</impact>
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<workaround>
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<p>Disable TLS 1.3 protocol.</p>
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</workaround>
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<resolution>
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<p>All NSS 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 ">=dev-libs/nss-3.58"
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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-2020-25648">CVE-2020-25648</uri>
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</references>
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<metadata tag="requester" timestamp="2020-12-22T23:13:35Z">whissi</metadata>
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<metadata tag="submitter" timestamp="2020-12-23T19:58:04Z">whissi</metadata>
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</glsa>
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