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Off-by-one Error Affecting nginx package, versions <1.10.3-1+deb9u6

0.0
high

Snyk CVSS

    Attack Complexity High
    Confidentiality High
    Integrity High

    Threat Intelligence

    Exploit Maturity Mature
    EPSS 58.18% (98th percentile)
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NVD
7.7 high
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SUSE
8.1 high
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Red Hat
8.1 high

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  • Snyk ID SNYK-DEBIAN9-NGINX-1296771
  • published 26 May 2021
  • disclosed 1 Jun 2021
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Introduced: 26 May 2021

CVE-2021-23017 Open this link in a new tab
CWE-193 Open this link in a new tab

How to fix?

Upgrade Debian:9 nginx to version 1.10.3-1+deb9u6 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nginx package and not the nginx package as distributed by Debian. See How to fix? for Debian:9 relevant fixed versions and status.

A security issue in nginx resolver was identified, which might allow an attacker who is able to forge UDP packets from the DNS server to cause 1-byte memory overwrite, resulting in worker process crash or potential other impact.

References