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Buffer Overflow Affecting openssl package, versions <3.0.2-0ubuntu1.7

0.0
high

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 0.12% (46th percentile)
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NVD
7.5 high
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SUSE
5.9 medium
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Red Hat
7.5 high

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  • Snyk ID SNYK-UBUNTU2204-OPENSSL-3092568
  • published 1 Nov 2022
  • disclosed 1 Nov 2022
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Introduced: 1 Nov 2022

CVE-2022-3786 Open this link in a new tab
CWE-120 Open this link in a new tab

How to fix?

Upgrade Ubuntu:22.04 openssl to version 3.0.2-0ubuntu1.7 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssl package and not the openssl package as distributed by Ubuntu. See How to fix? for Ubuntu:22.04 relevant fixed versions and status.

A buffer overrun can be triggered in X.509 certificate verification, specifically in name constraint checking. Note that this occurs after certificate chain signature verification and requires either a CA to have signed the malicious certificate or for the application to continue certificate verification despite failure to construct a path to a trusted issuer. An attacker can craft a malicious email address to overflow an arbitrary number of bytes containing the . character (decimal 46) on the stack. This buffer overflow could result in a crash (causing a denial of service).

Changelog

November 1, 2022 - Advisory published.

References