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Out-of-Bounds Affecting ruby package, versions <2.4.2-r0

0.0
critical

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.6% (79th percentile)
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NVD
9.8 critical
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Red Hat
5.9 medium

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  • Snyk ID SNYK-ALPINE39-RUBY-339285
  • published 31 Aug 2017
  • disclosed 31 Aug 2017
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Introduced: 31 Aug 2017

CVE-2017-14064 Open this link in a new tab
CWE-119 Open this link in a new tab

How to fix?

Upgrade Alpine:3.9 ruby to version 2.4.2-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby package and not the ruby package as distributed by Alpine. See How to fix? for Alpine:3.9 relevant fixed versions and status.

Ruby through 2.2.7, 2.3.x through 2.3.4, and 2.4.x through 2.4.1 can expose arbitrary memory during a JSON.generate call. The issues lies in using strdup in ext/json/ext/generator/generator.c, which will stop after encountering a '\0' byte, returning a pointer to a string of length zero, which is not the length stored in space_len.

References