Ubuntu update for krb5
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 4 |
| CVE-ID | CVE-2024-26458 CVE-2024-26461 CVE-2024-26462 CVE-2025-24528 |
| CWE-ID | CWE-401 CWE-787 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
Ubuntu Operating systems & Components / Operating system libkdb5-9 (Ubuntu package) Operating systems & Components / Operating system package or component libkdb5-10 (Ubuntu package) Operating systems & Components / Operating system package or component libgssrpc4 (Ubuntu package) Operating systems & Components / Operating system package or component libkdb5-10t64 (Ubuntu package) Operating systems & Components / Operating system package or component libgssrpc4t64 (Ubuntu package) Operating systems & Components / Operating system package or component libgssapi-krb5-2 (Ubuntu package) Operating systems & Components / Operating system package or component krb5-kdc (Ubuntu package) Operating systems & Components / Operating system package or component krb5-admin-server (Ubuntu package) Operating systems & Components / Operating system package or component |
| Vendor | Canonical Ltd. |
Security Bulletin
This security bulletin contains information about 4 vulnerabilities.
1) Memory leak
EUVDB-ID: #VU88225
Risk: Medium
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2024-26458
CWE-ID:
CWE-401 - Missing release of memory after effective lifetime
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak in /krb5/src/lib/rpc/pmap_rmt.c. A remote attacker can perform a denial of service attack.
MitigationUpdate the affected package krb5 to the latest version.
Vulnerable software versionsUbuntu: 20.04 - 24.10
libkdb5-9 (Ubuntu package): before 1.17-6ubuntu4.9
libkdb5-10 (Ubuntu package): before 1.19.2-2ubuntu0.6
libgssrpc4 (Ubuntu package): before 1.17-6ubuntu4.9
libkdb5-10t64 (Ubuntu package): before 1.20.1-6ubuntu2.5
libgssrpc4t64 (Ubuntu package): before 1.20.1-6ubuntu2.5
libgssapi-krb5-2 (Ubuntu package): before 1.17-6ubuntu4.9
krb5-kdc (Ubuntu package): before 1.17-6ubuntu4.9
krb5-admin-server (Ubuntu package): before 1.17-6ubuntu4.9
CPE2.3- cpe:2.3:o:canonical:ubuntu:20.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:22.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:24.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:24.10:*:*:*:*:*:*:*
- cpe:2.3:a:canonical:libkdb5-9_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:libkdb5-10_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:libgssrpc4_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:libkdb5-10t64_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:libgssrpc4t64_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:libgssapi-krb5-2_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:krb5-kdc_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:krb5-admin-server_ubuntu_package:*:*:*:*:*:ubuntu:*:*
https://ubuntu.com/security/notices/USN-7314-1
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Memory leak
EUVDB-ID: #VU88226
Risk: Medium
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2024-26461
CWE-ID:
CWE-401 - Missing release of memory after effective lifetime
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak in /krb5/src/lib/gssapi/krb5/k5sealv3.c. A remote attacker can force the application to leak memory and perform denial of service attack.
MitigationUpdate the affected package krb5 to the latest version.
Vulnerable software versionsUbuntu: 20.04 - 24.10
libkdb5-9 (Ubuntu package): before 1.17-6ubuntu4.9
libkdb5-10 (Ubuntu package): before 1.19.2-2ubuntu0.6
libgssrpc4 (Ubuntu package): before 1.17-6ubuntu4.9
libkdb5-10t64 (Ubuntu package): before 1.20.1-6ubuntu2.5
libgssrpc4t64 (Ubuntu package): before 1.20.1-6ubuntu2.5
libgssapi-krb5-2 (Ubuntu package): before 1.17-6ubuntu4.9
krb5-kdc (Ubuntu package): before 1.17-6ubuntu4.9
krb5-admin-server (Ubuntu package): before 1.17-6ubuntu4.9
CPE2.3- cpe:2.3:o:canonical:ubuntu:20.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:22.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:24.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:24.10:*:*:*:*:*:*:*
- cpe:2.3:a:canonical:libkdb5-9_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:libkdb5-10_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:libgssrpc4_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:libkdb5-10t64_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:libgssrpc4t64_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:libgssapi-krb5-2_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:krb5-kdc_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:krb5-admin-server_ubuntu_package:*:*:*:*:*:ubuntu:*:*
https://ubuntu.com/security/notices/USN-7314-1
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Memory leak
EUVDB-ID: #VU95441
Risk: Medium
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2024-26462
CWE-ID:
CWE-401 - Missing release of memory after effective lifetime
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak in /krb5/src/kdc/ndr.c. A remote attacker can force the application to leak memory and perform denial of service attack.
MitigationUpdate the affected package krb5 to the latest version.
Vulnerable software versionsUbuntu: 20.04 - 24.10
libkdb5-9 (Ubuntu package): before 1.17-6ubuntu4.9
libkdb5-10 (Ubuntu package): before 1.19.2-2ubuntu0.6
libgssrpc4 (Ubuntu package): before 1.17-6ubuntu4.9
libkdb5-10t64 (Ubuntu package): before 1.20.1-6ubuntu2.5
libgssrpc4t64 (Ubuntu package): before 1.20.1-6ubuntu2.5
libgssapi-krb5-2 (Ubuntu package): before 1.17-6ubuntu4.9
krb5-kdc (Ubuntu package): before 1.17-6ubuntu4.9
krb5-admin-server (Ubuntu package): before 1.17-6ubuntu4.9
CPE2.3- cpe:2.3:o:canonical:ubuntu:20.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:22.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:24.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:24.10:*:*:*:*:*:*:*
- cpe:2.3:a:canonical:libkdb5-9_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:libkdb5-10_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:libgssrpc4_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:libkdb5-10t64_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:libgssrpc4t64_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:libgssapi-krb5-2_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:krb5-kdc_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:krb5-admin-server_ubuntu_package:*:*:*:*:*:ubuntu:*:*
https://ubuntu.com/security/notices/USN-7314-1
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
4) Out-of-bounds write
EUVDB-ID: #VU103504
Risk: Medium
CVSSv4.0: 4.6 [CVSS:4.0/AV:A/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-2025-24528
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: No
Description The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error when calculating ulog block size in kadmind. A remote user can trigger an out-of-bounds write and perform a denial of service (DoS) attack.
Update the affected package krb5 to the latest version.
Vulnerable software versionsUbuntu: 20.04 - 24.10
libkdb5-9 (Ubuntu package): before 1.17-6ubuntu4.9
libkdb5-10 (Ubuntu package): before 1.19.2-2ubuntu0.6
libgssrpc4 (Ubuntu package): before 1.17-6ubuntu4.9
libkdb5-10t64 (Ubuntu package): before 1.20.1-6ubuntu2.5
libgssrpc4t64 (Ubuntu package): before 1.20.1-6ubuntu2.5
libgssapi-krb5-2 (Ubuntu package): before 1.17-6ubuntu4.9
krb5-kdc (Ubuntu package): before 1.17-6ubuntu4.9
krb5-admin-server (Ubuntu package): before 1.17-6ubuntu4.9
CPE2.3- cpe:2.3:o:canonical:ubuntu:20.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:22.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:24.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:24.10:*:*:*:*:*:*:*
- cpe:2.3:a:canonical:libkdb5-9_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:libkdb5-10_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:libgssrpc4_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:libkdb5-10t64_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:libgssrpc4t64_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:libgssapi-krb5-2_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:krb5-kdc_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:krb5-admin-server_ubuntu_package:*:*:*:*:*:ubuntu:*:*
https://ubuntu.com/security/notices/USN-7314-1
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
