drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Denial of Service in NSD
Name: |
Denial of Service in NSD |
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ID: |
202101-38 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
Fr, 29. Januar 2021, 08:51 |
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Referenzen: |
https://nvd.nist.gov/vuln/detail/CVE-2020-28935 |
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Applikationen: |
NSD |
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Originalnachricht |
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 202101-38 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal Title: NSD: Symbolic link traversal Date: January 29, 2021 Bugs: #758977 ID: 202101-38
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Synopsis ========
A vulnerability was discovered in NSD which could allow a local attacker to cause a Denial of Service condition.
Background ==========
An authoritative only, high performance, open source name server
Affected packages =================
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-dns/nsd < 4.3.4 >= 4.3.4
Description ===========
A local vulnerability was discovered that would allow for a local symlink attack due to how NSD handles PID files.
Impact ======
A local attacker could cause a Denial of Service condition.
Workaround ==========
There is no known workaround at this time.
Resolution ==========
All NSD users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-dns/nsd-4.3.4"
References ==========
[ 1 ] CVE-2020-28935 https://nvd.nist.gov/vuln/detail/CVE-2020-28935 [ 2 ] Upstream advisory https://www.nlnetlabs.nl/downloads/nsd/CVE-2020-28935.txt
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/202101-38
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.
License =======
Copyright 2021 Gentoo Foundation, Inc; referenced text belongs to its owner(s).
The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.
https://creativecommons.org/licenses/by-sa/2.5
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