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Red Hat Enterprise Linux 7 RHSA-2021-4785 Moderate: rpm Signature Bypass

red hat
Calendar Grey November 23, 2021
Dist Redhat Esm H88
Critical rpm vulnerability patch for CentOS addresses authentication evasion concern. More information on deployment available.
An update for rpm is now available for Red Hat Enterprise Linux 7

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 security update Red Hat Enterprise Linux moderate severity rpm package 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 Client (v. 7):
Source: rpm-4.11.3-48.el7_9.src.rpm
x86_64: rpm-4.11.3-48.el7_9.x86_64.rpm rpm-build-4.11.3-48.el7_9.x86_64.rpm rpm-build-libs-4.11.3-48.el7_9.i686.rpm rpm-build-libs-4.11.3-48.el7_9.x86_64.rpm rpm-debuginfo-4.11.3-48.el7_9.i686.rpm rpm-debuginfo-4.11.3-48.el7_9.x86_64.rpm rpm-libs-4.11.3-48.el7_9.i686.rpm rpm-libs-4.11.3-48.el7_9.x86_64.rpm rpm-python-4.11.3-48.el7_9.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
noarch: rpm-apidocs-4.11.3-48.el7_9.noarch.rpm rpm-cron-4.11.3-48.el7_9.noarch.rpm
x86_64: rpm-debuginfo-4.11.3-48.el7_9.i686.rpm rpm-debuginfo-4.11.3-48.el7_9.x86_64.rpm rpm-devel-4.11.3-48.el7_9.i686.rpm rpm-devel-4.11.3-48.el7_9.x86_64.rpm rpm-plugin-systemd-inhibit-4.11.3-48.el7_9.x86_64.rpm rpm-sign-4.11.3-48.el7_9.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source: rpm-4.11.3-48.el7_9.src.rpm
x86_64: rpm-4.11.3-48.el7_9.x86_64.rpm rpm-build-4.11.3-48.el7_9.x86_64.rpm rpm-build-libs-4.11.3-48.el7_9.i686.rpm rpm-build-libs-4.11.3-48.el7_9.x86_64.rpm rpm-debuginfo-4.11.3-48.el7_9.i686.rpm rpm-debuginfo-4.11.3-48.el7_9.x86_64.rpm rpm-libs-4.11.3-48.el7_9.i686.rpm rpm-libs-4.11.3-48.el7_9.x86_64.rpm rpm-python-4.11.3-48.el7_9.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
noarch:

Read the Full Advisory


Advisory ID: RHSA-2021:4785-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:4785
Issue date: 2021-11-23

Topic

An update for rpm is now available for Red Hat Enterprise Linux 7.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 security update Red Hat Enterprise Linux moderate severity rpm package signature bypass

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - noarch, x86_64

Bugs Fixed

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

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