Improper Validation of Array Index Affecting butane package, versions <0:0.12.1-1.rhaos4.8.el8


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
3.48% (88th percentile)

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  • Snyk IDSNYK-RHEL8-BUTANE-18679163
  • published12 Aug 2026
  • disclosed11 Jan 2021

Introduced: 11 Jan 2021

CVE-2021-3121  (opens in a new tab)
CWE-129  (opens in a new tab)

How to fix?

Upgrade RHEL:8 butane to version 0:0.12.1-1.rhaos4.8.el8 or higher.
This issue was patched in RHSA-2021:2437.

NVD Description

Note: Versions mentioned in the description apply only to the upstream butane package and not the butane package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

An issue was discovered in GoGo Protobuf before 1.3.2. plugin/unmarshal/unmarshal.go lacks certain index validation, aka the "skippy peanut butter" issue.

CVSS Base Scores

version 3.1