ESB-2021.1851 – [Debian] nginx: Multiple vulnerabilities

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AUSCERT External Security Bulletin Redistribution

ESB-2021.1851
nginx security update
31 May 2021

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AusCERT Security Bulletin Summary
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Product: nginx
Publisher: Debian
Operating System: Debian GNU/Linux
Impact/Access: Execute Arbitrary Code/Commands — Remote/Unauthenticated
Denial of Service — Remote/Unauthenticated
Access Confidential Data — Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2021-23017

Reference: ESB-2021.1840
ESB-2021.1833
ESB-2021.1817
ESB-2021.1802

Original Bulletin:
https://www.debian.org/lts/security/2021/dla-2670

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Debian LTS Advisory DLA-2670-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Utkarsh Gupta
May 30, 2021 https://wiki.debian.org/LTS
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Package : nginx
Version : 1.10.3-1+deb9u6
CVE ID : CVE-2021-23017
Debian Bug : 989095

Luis Merino, Markus Vervier and Eric Sesterhenn discovered an off-by-one
in Nginx, a high-performance web and reverse proxy server, which could
result in denial of service and potentially the execution of arbitrary
code.

For Debian 9 stretch, this problem has been fixed in version
1.10.3-1+deb9u6.

We recommend that you upgrade your nginx packages.

For the detailed security status of nginx please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/nginx

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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This security bulletin is provided as a service to AusCERT’s members. As
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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
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On call after hours for member emergencies only.
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