drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Ausführen beliebiger Kommandos in nginx
Name: |
Ausführen beliebiger Kommandos in nginx |
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ID: |
202105-38 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
Mi, 26. Mai 2021, 23:08 |
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Referenzen: |
https://nvd.nist.gov/vuln/detail/CVE-2021-23017 |
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Applikationen: |
nginx |
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Originalnachricht |
This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --L24Sbdl7XJfNcImKJg1QlYyKRPmXpuXfH Content-Type: multipart/mixed; boundary="Na7PVLT6RfpEAM1GVHryO6z90HB5G0ahz"; protected-headers="v1" From: Thomas Deutschmann <whissi@gentoo.org> Reply-To: security@gentoo.org To: gentoo-announce@lists.gentoo.org Message-ID: <7db3df74-8d18-5925-d42f-8c285f2c3df0@gentoo.org> Subject: [ GLSA 202105-38 ] nginx: Remote code execution
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 202105-38 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: High Title: nginx: Remote code execution Date: May 26, 2021 Bugs: #792087 ID: 202105-38
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Synopsis ========
A vulnerability in nginx could lead to remote code execution.
Background ==========
nginx is a robust, small, and high performance HTTP and reverse proxy server.
Affected packages =================
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 www-servers/nginx < 1.21.0 >= 1.20.1:0 >= 1.21.0:mainline
Description ===========
It was discovered that nginx did not properly handle DNS responses when "resolver" directive is used.
Impact ======
A remote attacker, able to provide DNS responses to a nginx instance, could cause the execution of arbitrary code with the privileges of the process or a Denial of Service condition.
Workaround ==========
There is no known workaround at this time.
Resolution ==========
All nginx users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=www-servers/nginx-1.20.1"
All nginx mainline users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot -v ">=www-servers/nginx-1.21.0:mainline"
References ==========
[ 1 ] CVE-2021-23017 https://nvd.nist.gov/vuln/detail/CVE-2021-23017
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/202105-38
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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