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Kerberos: delegation constrain bypass in S4U2Proxy

🗓️ 09 May 2023 10:11:14Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 4 Views

Kerberos S4U2Proxy delegation flaw allows tampering of tickets and impersonation of non-forwardable users.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
ALT Linux		Security fix for the ALT Linux 10 package samba version 4.14.9-alt1
1 Nov 202100:00
–altlinux
IBM Security Bulletins		Security Bulletin: A buffer overread, security restrictions bypass, a use-after-free, and other vulnerabilities might affect IBM Storage Defender – Resiliency Service
25 Mar 202523:50
–ibm
IBM Security Bulletins		Security Bulletin: Security vulnerabilities were discovered in IBM Application Gateway
4 Jun 202523:00
–ibm
ATTACKERKB		CVE-2020-17049
11 Nov 202000:00
–attackerkb
Tenable Nessus		Amazon Linux 2022 : samba (ALAS2022-2022-213)
9 Dec 202200:00
–nessus
Tenable Nessus		Amazon Linux 2023 : libnetapi, libnetapi-devel, libsmbclient (ALAS2023-2023-032)
21 Mar 202300:00
–nessus
Tenable Nessus		Amazon Linux AMI : samba (ALAS-2022-1642)
10 Dec 202200:00
–nessus
Tenable Nessus		Alibaba Cloud Linux 3 : 0022: idm:DL1 (ALINUX3-SA-2024:0022)
14 May 202500:00
–nessus
Tenable Nessus		AlmaLinux 9 : krb5 (ALSA-2023:2570)
14 May 202300:00
–nessus
Tenable Nessus		AlmaLinux 8 : idm:DL1 (ALSA-2024:0143)
12 Jan 202400:00
–nessus
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9aarch64krb5-debuginfo1.20.1-8.el9krb5-debuginfo-1.20.1-8.el9.aarch64.rpm
Red Hat Enterprise Linux9i686krb5-debuginfo1.20.1-8.el9krb5-debuginfo-1.20.1-8.el9.i686.rpm
Red Hat Enterprise Linux9ppc64lekrb5-debuginfo1.20.1-8.el9krb5-debuginfo-1.20.1-8.el9.ppc64le.rpm
Red Hat Enterprise Linux9s390xkrb5-debuginfo1.20.1-8.el9krb5-debuginfo-1.20.1-8.el9.s390x.rpm
Red Hat Enterprise Linux9x86_64krb5-debuginfo1.20.1-8.el9krb5-debuginfo-1.20.1-8.el9.x86_64.rpm
Red Hat Enterprise Linux9aarch64krb5-debugsource1.20.1-8.el9krb5-debugsource-1.20.1-8.el9.aarch64.rpm
Red Hat Enterprise Linux9i686krb5-debugsource1.20.1-8.el9krb5-debugsource-1.20.1-8.el9.i686.rpm
Red Hat Enterprise Linux9ppc64lekrb5-debugsource1.20.1-8.el9krb5-debugsource-1.20.1-8.el9.ppc64le.rpm
Red Hat Enterprise Linux9s390xkrb5-debugsource1.20.1-8.el9krb5-debugsource-1.20.1-8.el9.s390x.rpm
Red Hat Enterprise Linux9x86_64krb5-debugsource1.20.1-8.el9krb5-debugsource-1.20.1-8.el9.x86_64.rpm
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28 Jun 2026 12:39Current
6.5Medium risk
Vulners AI Score6.5
CVSS 3.16.6 - 7.2
CVSS 29
EPSS0.13794
SSVC
CWE-345
KerberosDelegationTicket tamperingService for UserImpersonationNon forwardable user
4