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Red Hat Enterprise 7.4 RHSA-2021:0224-01 Critical: Sudo Buffer Overflow

red hat
Calendar Grey January 26, 2021
Dist Redhat Esm H88
Critical update for RHEL 7.4's sudo system addresses a significant buffer overflow vulnerability for enhanced security.
An update for sudo is now available for Red Hat Enterprise Linux 7.4 Advanced Update Support, Red Hat Enterprise Linux 7.4 Telco Extended Update Support, and Red Hat Enterprise Lin...

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

Summary

The sudo packages contain the sudo utility which allows system administrators to provide certain users with the permission to execute privileged commands, which are used for system management purposes, without having to log in as root.
Security Fix(es):
* sudo: Heap buffer overflow in argument parsing (CVE-2021-3156)
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 buffer overflow red hat important sudo heap overflow

References

https://access.redhat.com/security/cve/CVE-2021-3156 https://access.redhat.com/security/updates/classification#important https://access.redhat.com/security/vulnerabilities/RHSB-2021-002

Package List

Red Hat Enterprise Linux Server AUS (v. 7.4):
Source: sudo-1.8.19p2-12.el7_4.2.src.rpm
x86_64: sudo-1.8.19p2-12.el7_4.2.x86_64.rpm sudo-debuginfo-1.8.19p2-12.el7_4.2.x86_64.rpm
Red Hat Enterprise Linux Server E4S (v. 7.4):
Source: sudo-1.8.19p2-12.el7_4.2.src.rpm
ppc64le: sudo-1.8.19p2-12.el7_4.2.ppc64le.rpm sudo-debuginfo-1.8.19p2-12.el7_4.2.ppc64le.rpm
x86_64: sudo-1.8.19p2-12.el7_4.2.x86_64.rpm sudo-debuginfo-1.8.19p2-12.el7_4.2.x86_64.rpm
Red Hat Enterprise Linux Server TUS (v. 7.4):
Source: sudo-1.8.19p2-12.el7_4.2.src.rpm
x86_64: sudo-1.8.19p2-12.el7_4.2.x86_64.rpm sudo-debuginfo-1.8.19p2-12.el7_4.2.x86_64.rpm
Red Hat Enterprise Linux Server Optional AUS (v. 7.4):
x86_64: sudo-debuginfo-1.8.19p2-12.el7_4.2.i686.rpm sudo-debuginfo-1.8.19p2-12.el7_4.2.x86_64.rpm sudo-devel-1.8.19p2-12.el7_4.2.i686.rpm sudo-devel-1.8.19p2-12.el7_4.2.x86_64.rpm
Red Hat Enterprise Linux Server Optional E4S (v. 7.4):
ppc64le: sudo-debuginfo-1.8.19p2-12.el7_4.2.ppc64le.rpm sudo-devel-1.8.19p2-12.el7_4.2.ppc64le.rpm
x86_64: sudo-debuginfo-1.8.19p2-12.el7_4.2.i686.rpm sudo-debuginfo-1.8.19p2-12.el7_4.2.x86_64.rpm sudo-devel-1.8.19p2-12.el7_4.2.i686.rpm sudo-devel-1.8.19p2-12.el7_4.2.x86_64.rpm
Red Hat Enterprise Linux Server Optional TUS (v. 7.4):
x86_64: sudo-debuginfo-1.8.19p2-12.el7_4.2.i686.rpm

Read the Full Advisory


Severity
critical
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:0224-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:0224
Issue date: 2021-01-26

Topic

An update for sudo is now available for Red Hat Enterprise Linux 7.4Advanced Update Support, Red Hat Enterprise Linux 7.4 Telco Extended UpdateSupport, and Red Hat Enterprise Linux 7.4 Update Services for SAPSolutions.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory security update Red Hat buffer overflow red hat important sudo heap overflow

Relevant Releases Architectures

Red Hat Enterprise Linux Server AUS (v. 7.4) - x86_64

Red Hat Enterprise Linux Server E4S (v. 7.4) - ppc64le, x86_64

Red Hat Enterprise Linux Server Optional AUS (v. 7.4) - x86_64

Red Hat Enterprise Linux Server Optional E4S (v. 7.4) - ppc64le, x86_64

Red Hat Enterprise Linux Server Optional TUS (v. 7.4) - x86_64

Red Hat Enterprise Linux Server TUS (v. 7.4) - x86_64

Bugs Fixed

1917684 - CVE-2021-3156 sudo: Heap buffer overflow in argument parsing

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