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Out-of-bounds Read Affecting openssl package, versions <1.0.2g-1ubuntu11

medium

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 4.55% (93rd percentile)
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NVD
7.5 high
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Red Hat
5.9 medium

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  • Snyk ID SNYK-UBUNTU1804-OPENSSL-374141
  • published 4 May 2017
  • disclosed 4 May 2017
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Introduced: 4 May 2017

CVE-2017-3731 Open this link in a new tab
CWE-125 Open this link in a new tab

How to fix?

Upgrade Ubuntu:18.04 openssl to version 1.0.2g-1ubuntu11 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:18.04 relevant fixed versions and status.

If an SSL/TLS server or client is running on a 32-bit host, and a specific cipher is being used, then a truncated packet can cause that server or client to perform an out-of-bounds read, usually resulting in a crash. For OpenSSL 1.1.0, the crash can be triggered when using CHACHA20/POLY1305; users should upgrade to 1.1.0d. For Openssl 1.0.2, the crash can be triggered when using RC4-MD5; users who have not disabled that algorithm should update to 1.0.2k.

References