Security update for krb5

This update for krb5 fixes the following issues: CVE-2026-107708: Denial of Service via malformed PAC in S4U2Proxy requests bsc1284816. CVE-2026-107778: Denial of Service via crafted forwarded credentials bsc1284817. Patch Instructions: To install this SUSE update use the SUSE recommended...

CVE-2026-107708

MIT krb5 through 1.22.2 contains a NULL pointer dereference vulnerability in the KDC's getpacprincwithrealm that returns success while leaving the client principal NULL on malformed names. A malicious or compromised cross-realm trusted KDC can send an S4U2Proxy request with a PAC carrying a...

UBUNTU-CVE-2026-107708

MIT krb5 through 1.22.2 contains a NULL pointer dereference vulnerability in the KDC's getpacprincwithrealm that returns success while leaving the client principal NULL on malformed names. A malicious or compromised cross-realm trusted KDC can send an S4U2Proxy request with a PAC carrying a...

krb5: krb5: Denial of Service via malformed PAC in S4U2Proxy requests

A flaw was found in krb5. This vulnerability allows a compromised or malicious cross-realm trusted Key Distribution Center KDC to cause a Denial of Service DoS. By sending an S4U2Proxy delegation request containing a malformed client name within a Privilege Attribute Certificate PAC, an attacker...

CVE-2026-107708

A flaw was found in krb5. This vulnerability allows a compromised or malicious cross-realm trusted Key Distribution Center KDC to cause a Denial of Service DoS. By sending an S4U2Proxy delegation request containing a malformed client name within a Privilege Attribute Certificate PAC, an attacker...

DEBIAN-CVE-2026-107708

MIT krb5 through 1.22.2 contains a NULL pointer dereference vulnerability in the KDC's getpacprincwithrealm that returns success while leaving the client principal NULL on malformed names. A malicious or compromised cross-realm trusted KDC can send an S4U2Proxy request with a PAC carrying a...

AZL-106836 CVE-2026-107708 affecting package krb5 1.21.3-5

MIT krb5 through 1.22.2 contains a NULL pointer dereference vulnerability in the KDC's getpacprincwithrealm that returns success while leaving the client principal NULL on malformed names. A malicious or compromised cross-realm trusted KDC can send an S4U2Proxy request with a PAC carrying a...

CVE-2026-107708 MIT krb5 through 1.22.2 KDC NULL Pointer Dereference via S4U2Proxy PAC

MIT krb5 through 1.22.2 contains a NULL pointer dereference vulnerability in the KDC's getpacprincwithrealm that returns success while leaving the client principal NULL on malformed names. A malicious or compromised cross-realm trusted KDC can send an S4U2Proxy request with a PAC carrying a...

CVE-2026-107708 MIT krb5 through 1.22.2 KDC NULL Pointer Dereference via S4U2Proxy PAC

MIT krb5 through 1.22.2 contains a NULL pointer dereference vulnerability in the KDC's getpacprincwithrealm that returns success while leaving the client principal NULL on malformed names. A malicious or compromised cross-realm trusted KDC can send an S4U2Proxy request with a PAC carrying a...

CVE-2026-107708

The MIT krb5 library (versions through 1.22.2 ) is vulnerable to a NULL pointer dereference within the KDC's get_pac_princ_with_realm() function. The flaw occurs when the function processes an S4U2Proxy request containing a PAC with a malformed client name; the function incorrectly returns succes...

CVE-2026-107708

MIT krb5 through 1.22.2 contains a NULL pointer dereference vulnerability in the KDC's getpacprincwithrealm that returns success while leaving the client principal NULL on malformed names. A malicious or compromised cross-realm trusted KDC can send an S4U2Proxy request with a PAC carrying a...

CVE-2026-107708 MIT krb5 through 1.22.2 KDC NULL Pointer Dereference via S4U2Proxy PAC

MIT krb5 through 1.22.2 contains a NULL pointer dereference vulnerability in the KDC's getpacprincwithrealm that returns success while leaving the client principal NULL on malformed names. A malicious or compromised cross-realm trusted KDC can send an S4U2Proxy request with a PAC carrying a...

EUVD-2026-95255

MIT krb5 through 1.22.2 contains a NULL pointer dereference vulnerability in the KDC's getpacprincwithrealm that returns success while leaving the client principal NULL on malformed names. A malicious or compromised cross-realm trusted KDC can send an S4U2Proxy request with a PAC carrying a...

CVE-2026-107708: NULL Pointer Dereference

MIT krb5 through 1.22.2 contains a NULL pointer dereference vulnerability in the KDC's getpacprincwithrealm that returns success while leaving the client principal NULL on malformed names. A malicious or compromised cross-realm trusted KDC can send an S4U2Proxy request with a PAC carrying a...

noPac SamAccountName Spoofing Domain Escalation (CVE-2021-42278/42287)

Chains CVE-2021-42278 sAMAccountName spoofing on computer accounts with CVE-2021-42287 Kerberos PAC confusion to obtain a forwardable service ticket for a privileged user via S4U2Self/S4U2Proxy. Requires an authenticated domain user with ms-DS-MachineAccountQuota and LDAPS for machine password se...

AlmaLinux 9.2 [TuxCare] Security Update: ipa-client / ipa-client-common / ipa-client-epn / ipa-client-samba / etc Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2025:1763391572)

The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2025:1763391572 advisory. - A vulnerability was found in FreeIPA in how the initial implementation of MS-SFU by MIT Kerberos was missing a condition for...

MiracleLinux 8 : idm:DL1 (AXSA:2024-7462:01)

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2024-7462:01 advisory. Kerberos: delegation constrain bypass in S4U2Proxy CVE-2020-17049 ipa: Invalid CSRF protection CVE-2023-5455 Tenable has extracted the preceding...

MiracleLinux 9 : krb5-1.20.1-8.el9 (AXSA:2023-5393:04)

The remote MiracleLinux 9 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2023-5393:04 advisory. Kerberos: delegation constrain bypass in S4U2Proxy CVE-2020-17049 Tenable has extracted the preceding description block directly from the MiracleLinux securi...

EUVD-2017-2995

Malware in sbrugna...

UBUNTU-CVE-2024-2698

A vulnerability was found in FreeIPA in how the initial implementation of MS-SFU by MIT Kerberos was missing a condition for granting the "forwardable" flag on S4U2Self tickets. Fixing this mistake required adding a special case for the checkallowedtodelegate function: If the target service...