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ALSA-2023:6699 — Moderate: krb5 security and bug fix update

Affected: 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

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: Denial of service through freeing uninitialized pointer (CVE-2023-36054) * krb5: double-free in KDC TGS processing (CVE-2023-39975)

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.

bdu:2024-02770

BELL-CVE-2023-36054

Affected: Alpaquita:23: krb5

certfr-2024-avi-0119 — De multiples vulnérabilités ont été découvertes dans les produits Siemens. Certaines d'entr…

certfr-2024-avi-0119

EUVD-2026-195067

fkie_cve-2023-36054

lib/kadm5/kadm_rpc_xdr.c in MIT Kerberos 5 (aka krb5) before 1.20.2 and 1.21.x before 1.21.1 frees an uninitialized pointer. A remote authenticated user can trigger a kadmind crash. This occurs because _xdr_kadm5_principal_ent_rec does not validate the relationship between n_key_data and the key_data array count.

GHSA-39q6-4vrm-fv3g

gsd-2023-36054

ICSA-24-046-11 — Siemens SCALANCE XCM-/XRM-300

A carefully crafted If: request header can cause a memory read, or write of a single zero byte, in a pool (heap) memory location beyond the header value sent. This could cause the process to crash.

This issue affects Apache HTTP Server 2.4.54 and earlier. A flaw was found in python. In algorithms with quadratic time complexity using non-binary bases, when using int("text"), a system could take 50ms to parse an int string with 100,000 digits and 5s for 1,000,000 digits (float, decimal, int.from_bytes(), and int() for binary bases 2, 4, 8, 16, and 32 are not affected). The highest threat from this vulnerability is to system availability. A flaw was found in libdnf's signature verification functionality in versions before 0.60.1. This flaw allows an attacker to achieve code execution if they can alter the header information of an RPM package and then trick a user or system into installing it. The highest risk of this vulnerability is to confidentiality, integrity, as well as system availability. An out-of-bounds memory access flaw was found in the ATI VGA device emulation of QEMU. This flaw occurs in the ati_2d_blt() routine while handling MMIO write operations when the guest provides invalid values for the destination display parameters. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service. A vulnerability was found in the fs/inode.c:inode_init_owner() function logic of the LInux kernel that allows local users to create…

msrc_CVE-2023-36054 — lib/kadm5/kadm_rpc_xdr.c in MIT Kerberos 5 (aka krb5) before 1.20.2 and 1.21.x before 1.21.1 frees an uninitialized poi…

msrc_CVE-2023-36054

OESA-2023-1526 — krb5 security update

Affected: openEuler:20.03-LTS-SP1: krb5

Kerberos is a network authentication protocol. It is designed to provide strong authentication for client/server applications by using secret-key cryptography. Security Fix(es): lib/kadm5/kadm_rpc_xdr.c in MIT Kerberos 5 (aka krb5) before 1.20.2 and 1.21.x before 1.21.1 frees an uninitialized pointer. A remote authenticated user can trigger a kadmind crash. This occurs because _xdr_kadm5_principal_ent_rec does not validate the relationship between n_key_data and the key_data array count.(CVE-2023-36054)

openSUSE-SU-2024:13050-1 — krb5-1.21.1-1.1 on GA media

krb5-1.21.1-1.1 on GA media

SUSE-SU-2023:3325-1 — Security update for krb5

Security update for krb5

UBUNTU-CVE-2023-36054

Affected: Ubuntu:Pro:14.04:LTS: krb5, Ubuntu:Pro:16.04:LTS: krb5, Ubuntu:Pro:18.04:LTS: krb5, Ubuntu:20.04:LTS: krb5, Ubuntu:22.04:LTS: krb5

WID-SEC-W-2023-1973 — MIT Kerberos: Schwachstelle ermöglicht Denial of Service

Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in MIT Kerberos ausnutzen, um einen Denial of Service Angriff durchzuführen.