Missing Required Cryptographic Step Affecting foreman-bootloaders-redhat-tftpboot package, versions <0:201801241201-3.el7sat


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.56% (79th percentile)

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  • Snyk IDSNYK-RHEL7-FOREMANBOOTLOADERSREDHATTFTPBOOT-5363622
  • published26 Mar 2023
  • disclosed15 Oct 2016

Introduced: 15 Oct 2016

CVE-2016-1000338  (opens in a new tab)
CWE-325  (opens in a new tab)

How to fix?

Upgrade RHEL:7 foreman-bootloaders-redhat-tftpboot to version 0:201801241201-3.el7sat or higher.
This issue was patched in RHSA-2018:2927.

NVD Description

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

In Bouncy Castle JCE Provider version 1.55 and earlier the DSA does not fully validate ASN.1 encoding of signature on verification. It is possible to inject extra elements in the sequence making up the signature and still have it validate, which in some cases may allow the introduction of 'invisible' data into a signed structure.

CVSS Scores

version 3.1