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Use of Externally-Controlled Format String Affecting rubygem-psych package, versions <0:2.0.0-33.el7_4

Severity

 Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
1.65% (88th percentile)

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  • Snyk IDSNYK-ORACLE7-RUBYGEMPSYCH-2524744
  • published10 Apr 2022
  • disclosed15 Sept 2017
Report a new vulnerability Found a mistake?

Introduced: 15 Sep 2017

CVE-2017-0898  (opens in a new tab)
CWE-134  (opens in a new tab)

How to fix?

Upgrade Oracle:7 rubygem-psych to version 0:2.0.0-33.el7_4 or higher.
This issue was patched in ELSA-2018-0378.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rubygem-psych package and not the rubygem-psych package as distributed by Oracle. See How to fix? for Oracle:7 relevant fixed versions and status.

Ruby before 2.4.2, 2.3.5, and 2.2.8 is vulnerable to a malicious format string which contains a precious specifier (*) with a huge minus value. Such situation can lead to a buffer overrun, resulting in a heap memory corruption or an information disclosure from the heap.