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Use of Externally-Controlled Format String Affecting ruby2.5-stdlib package, versions <2.5.5-4.3.1

Severity

 Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.44% (75th percentile)

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  • Snyk IDSNYK-SLES151-RUBY25STDLIB-2745724
  • published14 Apr 2022
  • disclosed10 Jul 2019
Report a new vulnerability Found a mistake?

Introduced: 10 Jul 2019

CVE-2018-8778  (opens in a new tab)
CWE-134  (opens in a new tab)

How to fix?

Upgrade SLES:15.1 ruby2.5-stdlib to version 2.5.5-4.3.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby2.5-stdlib package and not the ruby2.5-stdlib package as distributed by SLES. See How to fix? for SLES:15.1 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