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ALSA-2023:2570 Not scored

Moderate: krb5 security, bug fix, and enhancement update

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). The following packages have been upgraded to a later upstream version: krb5 (1.20.1). (BZ#2016312) Security Fix(es): * Kerberos: delegation constrain bypass in S4U2Proxy (CVE-2020-17049) 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. Additional Changes: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

Exploit probability Not scored
Published May 9, 2023
Required by Not available
Last source change February 4, 2026

02 / AFFECTED SOFTWARE

Affected packages

AlmaLinux:9 krb5-devel
AlmaLinux:9 krb5-libs
AlmaLinux:9 krb5-pkinit
AlmaLinux:9 krb5-server
AlmaLinux:9 krb5-server-ldap
AlmaLinux:9 krb5-workstation
AlmaLinux:9 libkadm5

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities ALSA-2023:2570

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). The following packages have been upgraded to a later upstream version: krb5 (1.20.1). (BZ#2016312) Security Fix(es): * Kerberos: delegation constrain bypass in S4U2Proxy (CVE-2020-17049) 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. Additional Changes: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

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05 / REFERENCES

Further evidence