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Use of Externally-Controlled Format String Affecting ruby2.5 package, versions <2.5.1-1

0.0
high

Snyk CVSS

    Attack Complexity Low
    Confidentiality High

    Threat Intelligence

    EPSS 0.45% (75th percentile)
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NVD
7.5 high
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SUSE
6.5 medium
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Red Hat
4.8 medium

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  • Snyk ID SNYK-DEBIAN10-RUBY25-384383
  • published 3 Apr 2018
  • disclosed 3 Apr 2018
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Introduced: 3 Apr 2018

CVE-2018-8778 Open this link in a new tab
CWE-134 Open this link in a new tab

How to fix?

Upgrade Debian:10 ruby2.5 to version 2.5.1-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby2.5 package and not the ruby2.5 package as distributed by Debian. See How to fix? for Debian:10 relevant fixed versions and status.

In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, an attacker controlling the unpacking format (similar to format string vulnerabilities) can trigger a buffer under-read in the String#unpack method, resulting in a massive and controlled information disclosure.

References