SUSE update for krb5

1) Access of Uninitialized Pointer

EUVDB-ID: #VU79586

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-36054

CWE-ID: CWE-824 - Access of Uninitialized Pointer

Exploit availability: No

Description

The vulnerability allows a remote user to perform a denial of service (DoS) attack.

The vulnerability exists due to the  _xdr_kadm5_principal_ent_rec() function in lib/kadm5/kadm_rpc_xdr.c does not validate the relationship between n_key_data and the key_data array count and frees an uninitialized pointer. A remote user can send a specially crafted request to the application and perform a denial of service (DoS) attack.

Mitigation

Update the affected package krb5 to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Micro for Rancher: 5.2

SUSE Linux Enterprise Server for SAP Applications 15: SP3

SUSE Linux Enterprise Server 15 SP3 LTSS: 15-SP3

SUSE Linux Enterprise Server 15: SP3

SUSE Linux Enterprise High Performance Computing LTSS 15: SP3

SUSE Linux Enterprise High Performance Computing ESPOS 15: SP3

SUSE Linux Enterprise High Performance Computing 15: SP3

SUSE Enterprise Storage: 7.1

SUSE Manager Retail Branch Server: 4.2

SUSE Linux Enterprise Micro: 5.1 - 5.2

SUSE Manager Server: 4.2

SUSE Manager Proxy: 4.2

krb5-32bit-debuginfo: before 1.19.2-150300.13.1

krb5-32bit: before 1.19.2-150300.13.1

krb5-plugin-preauth-otp-debuginfo: before 1.19.2-150300.13.1

krb5-plugin-kdb-ldap: before 1.19.2-150300.13.1

krb5-debuginfo: before 1.19.2-150300.13.1

krb5-plugin-preauth-spake-debuginfo: before 1.19.2-150300.13.1

krb5-plugin-kdb-ldap-debuginfo: before 1.19.2-150300.13.1

krb5-plugin-preauth-pkinit-debuginfo: before 1.19.2-150300.13.1

krb5: before 1.19.2-150300.13.1

krb5-plugin-preauth-pkinit: before 1.19.2-150300.13.1

krb5-plugin-preauth-otp: before 1.19.2-150300.13.1

krb5-server-debuginfo: before 1.19.2-150300.13.1

krb5-devel: before 1.19.2-150300.13.1

krb5-client-debuginfo: before 1.19.2-150300.13.1

krb5-server: before 1.19.2-150300.13.1

krb5-plugin-preauth-spake: before 1.19.2-150300.13.1

krb5-client: before 1.19.2-150300.13.1

krb5-debugsource: before 1.19.2-150300.13.1

CPE2.3

• cpe:2.3:o:suse:suse_linux_enterprise_micro_for_rancher:5.2:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap_applications_15:SP3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_15_sp3_ltss:15-SP3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_15:SP3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing_ltss_15:SP3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing_espos_15:SP3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing_15:SP3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_enterprise_storage:7.1:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_manager_retail_branch_server:4.2:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_micro:5.1:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_manager_server:4.2:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_manager_proxy:4.2:*:*:*:*:*:*:*
• cpe:2.3:a:suse:krb5-32bit-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:krb5-32bit:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:krb5-plugin-preauth-otp-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:krb5-plugin-kdb-ldap:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:krb5-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:krb5-plugin-preauth-spake-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:krb5-plugin-kdb-ldap-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:krb5-plugin-preauth-pkinit-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:krb5:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:krb5-plugin-preauth-pkinit:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:krb5-plugin-preauth-otp:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:krb5-server-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:krb5-devel:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:krb5-client-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:krb5-server:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:krb5-plugin-preauth-spake:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:krb5-client:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:krb5-debugsource:*:*:*:*:*:suse_linux:*:*

External links

https://www.suse.com/support/update/announcement/2023/suse-su-20233365-1/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.