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Red Hat: RHSA-2021-4975-02 Moderate: RPM Signature Bypass Issue

red hat
Calendar Grey December 7, 2021
Dist Redhat Esm H88
Red Hat has issued guidance regarding a significant rpm security patch impacting various distributions due to a vulnerability that allows for signature evasion.
An update for rpm is now available for Red Hat Enterprise Linux 7.7 Advanced Update Support, Red Hat Enterprise Linux 7.7 Telco Extended Update Support, and Red Hat Enterprise Linu...

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

All running applications linked against the RPM library must be restarted for this update to take effect.

Summary

The RPM Package Manager (RPM) is a command-line driven package management system capable of installing, uninstalling, verifying, querying, and updating software packages.
Security Fix(es):
* rpm: Signature checks bypass via corrupted rpm package (CVE-2021-20271)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Topics%20covered

Topics Covered

security advisory moderate security update red hat software package rpm signature bypass

References

https://access.redhat.com/security/cve/CVE-2021-20271 https://access.redhat.com/security/updates/classification/#moderate

Package List

Red Hat Enterprise Linux Server AUS (v. 7.7):
Source: rpm-4.11.3-40.el7_7.1.src.rpm
x86_64: rpm-4.11.3-40.el7_7.1.x86_64.rpm rpm-build-4.11.3-40.el7_7.1.x86_64.rpm rpm-build-libs-4.11.3-40.el7_7.1.i686.rpm rpm-build-libs-4.11.3-40.el7_7.1.x86_64.rpm rpm-debuginfo-4.11.3-40.el7_7.1.i686.rpm rpm-debuginfo-4.11.3-40.el7_7.1.x86_64.rpm rpm-devel-4.11.3-40.el7_7.1.i686.rpm rpm-devel-4.11.3-40.el7_7.1.x86_64.rpm rpm-libs-4.11.3-40.el7_7.1.i686.rpm rpm-libs-4.11.3-40.el7_7.1.x86_64.rpm rpm-python-4.11.3-40.el7_7.1.x86_64.rpm rpm-sign-4.11.3-40.el7_7.1.x86_64.rpm
Red Hat Enterprise Linux Server E4S (v. 7.7):
Source: rpm-4.11.3-40.el7_7.1.src.rpm
ppc64le: rpm-4.11.3-40.el7_7.1.ppc64le.rpm rpm-build-4.11.3-40.el7_7.1.ppc64le.rpm rpm-build-libs-4.11.3-40.el7_7.1.ppc64le.rpm rpm-debuginfo-4.11.3-40.el7_7.1.ppc64le.rpm rpm-devel-4.11.3-40.el7_7.1.ppc64le.rpm rpm-libs-4.11.3-40.el7_7.1.ppc64le.rpm rpm-python-4.11.3-40.el7_7.1.ppc64le.rpm rpm-sign-4.11.3-40.el7_7.1.ppc64le.rpm
x86_64: rpm-4.11.3-40.el7_7.1.x86_64.rpm rpm-build-4.11.3-40.el7_7.1.x86_64.rpm rpm-build-libs-4.11.3-40.el7_7.1.i686.rpm rpm-build-libs-4.11.3-40.el7_7.1.x86_64.rpm rpm-debuginfo-4.11.3-40.el7_7.1.i686.rpm rpm-debuginfo-4.11.3-40.el7_7.1.x86_64.rpm rpm-devel-4.11.3-40.el7_7.1.i686.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:4975-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:4975
Issue date: 2021-12-07

Topic

An update for rpm is now available for Red Hat Enterprise Linux 7.7Advanced Update Support, Red Hat Enterprise Linux 7.7 Telco Extended UpdateSupport, and Red Hat Enterprise Linux 7.7 Update Services for SAPSolutions.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory moderate security update red hat software package rpm signature bypass

Relevant Releases Architectures

Red Hat Enterprise Linux Server AUS (v. 7.7) - x86_64

Red Hat Enterprise Linux Server E4S (v. 7.7) - ppc64le, x86_64

Red Hat Enterprise Linux Server Optional AUS (v. 7.7) - noarch, x86_64

Red Hat Enterprise Linux Server Optional E4S (v. 7.6) - noarch, ppc64le, x86_64

Red Hat Enterprise Linux Server Optional TUS (v. 7.7) - noarch, x86_64

Red Hat Enterprise Linux Server TUS (v. 7.7) - x86_64

Bugs Fixed

1934125 - CVE-2021-20271 rpm: Signature checks bypass via corrupted rpm package

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