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Red Hat Enterprise Linux 8.4: RHSA-2022-8639-01 Critical Update on krb5

red hat
Calendar Grey November 28, 2022
Dist Redhat Esm H88
Ubuntu unveils critical OpenSSL patch to fix buffer overflow risks. Upgrade immediately.
An update for krb5 is now available for Red Hat Enterprise Linux 8.4 Extended Update Support

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

After installing the updated packages, running Kerberos services (krb5kdc, kadmin, and kprop) will be restarted automatically.

Summary

Kerberos is a network authentication system, which can improve the security of your network by eliminating the insecure practice of sending passwords over the network in unencrypted form. It allows clients and servers to authenticate to each other with the help of a trusted third party, the Kerberos key distribution center (KDC).
Security Fix(es):
* krb5: integer overflow vulnerabilities in PAC parsing (CVE-2022-42898)
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 red hat integer overflow krb5 update network authentication important security fix

References

https://access.redhat.com/security/cve/CVE-2022-42898 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux BaseOS EUS (v.8.4):
Source: krb5-1.18.2-9.el8_4.src.rpm
aarch64: krb5-debuginfo-1.18.2-9.el8_4.aarch64.rpm krb5-debugsource-1.18.2-9.el8_4.aarch64.rpm krb5-devel-1.18.2-9.el8_4.aarch64.rpm krb5-devel-debuginfo-1.18.2-9.el8_4.aarch64.rpm krb5-libs-1.18.2-9.el8_4.aarch64.rpm krb5-libs-debuginfo-1.18.2-9.el8_4.aarch64.rpm krb5-pkinit-1.18.2-9.el8_4.aarch64.rpm krb5-pkinit-debuginfo-1.18.2-9.el8_4.aarch64.rpm krb5-server-1.18.2-9.el8_4.aarch64.rpm krb5-server-debuginfo-1.18.2-9.el8_4.aarch64.rpm krb5-server-ldap-1.18.2-9.el8_4.aarch64.rpm krb5-server-ldap-debuginfo-1.18.2-9.el8_4.aarch64.rpm krb5-workstation-1.18.2-9.el8_4.aarch64.rpm krb5-workstation-debuginfo-1.18.2-9.el8_4.aarch64.rpm libkadm5-1.18.2-9.el8_4.aarch64.rpm libkadm5-debuginfo-1.18.2-9.el8_4.aarch64.rpm
ppc64le: krb5-debuginfo-1.18.2-9.el8_4.ppc64le.rpm krb5-debugsource-1.18.2-9.el8_4.ppc64le.rpm krb5-devel-1.18.2-9.el8_4.ppc64le.rpm krb5-devel-debuginfo-1.18.2-9.el8_4.ppc64le.rpm krb5-libs-1.18.2-9.el8_4.ppc64le.rpm krb5-libs-debuginfo-1.18.2-9.el8_4.ppc64le.rpm krb5-pkinit-1.18.2-9.el8_4.ppc64le.rpm krb5-pkinit-debuginfo-1.18.2-9.el8_4.ppc64le.rpm krb5-server-1.18.2-9.el8_4.ppc64le.rpm krb5-server-debuginfo-1.18.2-9.el8_4.ppc64le.rpm krb5-server-ldap-1.18.2-9.el8_4.ppc64le.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2022:8639-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:8639
Issue date: 2022-11-28

Topic

An update for krb5 is now available for Red Hat Enterprise Linux 8.4Extended Update Support.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 red hat integer overflow krb5 update network authentication important security fix

Relevant Releases Architectures

Red Hat Enterprise Linux BaseOS EUS (v.8.4) - aarch64, ppc64le, s390x, x86_64

Bugs Fixed

2140960 - CVE-2022-42898 krb5: integer overflow vulnerabilities in PAC parsing

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