Improper Verification of Cryptographic Signature Affecting tfm-rubygem-puma package, versions <0:5.3.2-1.el7sat


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.3% (70th percentile)

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  • Snyk IDSNYK-RHEL7-TFMRUBYGEMPUMA-5362161
  • published26 Mar 2023
  • disclosed25 Sept 2019

Introduced: 25 Sep 2019

CVE-2019-14859  (opens in a new tab)
CWE-347  (opens in a new tab)

How to fix?

Upgrade RHEL:7 tfm-rubygem-puma to version 0:5.3.2-1.el7sat or higher.
This issue was patched in RHSA-2021:4702.

NVD Description

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

A flaw was found in all python-ecdsa versions before 0.13.3, where it did not correctly verify whether signatures used DER encoding. Without this verification, a malformed signature could be accepted, making the signature malleable. Without proper verification, an attacker could use a malleable signature to create false transactions.

CVSS Scores

version 3.1