Kerberos KDC krb5 UDP/TCP connection heap buffer overflow
| kerberos-kdc-krb5-udp-tcp-bo (21328) |  High Risk |
Description:
The MIT Kerberos Key Distribution Center (KDC) is vulnerable to a heap-based buffer overflow in the krb5 library. An unauthenticated remote attacker using a TCP or UDP connection could send a valid request to overflow a buffer and cause the application to crash or possibly execute arbitrary code on the system.
Note: It is reported that third-party application servers that use the MIT krb5 are also vulnerable to this vulnerability.
*CVSS:
| Base Score: | 7 |
| Access Vector: | Remote |
| Access Complexity: | Low |
| Authentication: | Not Required |
| Confidentiality Impact: | Partial |
| Integrity Impact: | Partial |
| Availability Impact: | Partial |
| Temporal Score: | 5.2 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Access
Remedy:
Upgrade to the latest version of MIT Kerberos 5 (krb5-1.4.2 or later), when it becomes available from the MIT Kerberos Web site. See References.
— OR —
Apply the patch for this vulnerability, as listed in MIT krb5 Security Advisory 2005-002. See References.
For Debian GNU/Linux 3.1 (Sarge):
Upgrade to the latest version of krb5 (1.3.6-2sarge2 or later), as listed in DSA-757-1. See References.
For Gentoo Linux:
Upgrade to the latest version of mit-krb5 (1.4.1-r1 or later), as listed in Gentoo Linux Security Announcement GLSA 200507-11. See References.
For Conectiva Linux 9.0 and 10.0:
Upgrade to the latest version of krb5 (1.4.2 or later) when it becomes available, as listed in Conectiva Linux Security Announcement CLSA-2005:993. See References.
For Red Hat Linux:
Refer to RHSA-2005:562-15 for patch, upgrade, or suggested workaround information. See References.
— OR —
Apply the patch for this vulnerability, as listed in MIT krb5 Security Advisory 2005-002. See References.
For Ubuntu Linux:
Refer to USN-224-1 for patch, upgrade, or suggested workaround information. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
References:
- CIAC INFORMATION BULLETIN P-249: krb5 Security Update.
- CIAC Information Bulletin P-276: Apple Security Update 2005-007.
- Conectiva Linux Security Announcement CLSA-2005:993: Fix for security vulnerabilities in Kerberos 5.
- MIT Kerberos Web site: MIT krb5 Security Advisory 2005-003.
- MIT krb5 Security Advisory 2005-002: buffer overflow, heap corruption in KDC.
- MIT krb5 Security Advisory 2005-003: double-free in krb5_recvauth.
- Sun Alert ID: 101809: Security Vulnerabilities in the Kerberos Key Distribution Center (KDC) Daemon.
- Sun Alert ID: 101810: Security Vulnerability in the Kerberos krb5_recvauth() Library Routine.
- BID-14236: MIT Kerberos 5 Key Distribution Center Remote Single Byte Heap Overflow Vulnerability
- BID-14567: Apple Mac OS X Multiple Vulnerabilities
- CVE-2005-1175: Heap-based buffer overflow in the Key Distribution Center (KDC) in MIT Kerberos 5 (krb5) 1.4.1 and earlier allows remote attackers to cause a denial of service (apllication crash) and possibly execute arbitrary code via a certain valid TCP or UDP request.
- DSA-757: krb5 -- buffer overflow
- GLSA-200507-11: MIT Kerberos 5: Multiple vulnerabilities
- MDKSA-2005:119: Updated krb5 packages fix multiple vulnerabilities
- RHSA-2005-562: krb5 security update
- RHSA-2005-567: krb5 security update
- SA16041: Kerberos V5 Multiple Vulnerabilities
- SA20364: IBM DCE Two Kerberos Vulnerabilities
- SECTRACK ID: 1014460: MIT krb5 KDC Buffer Overflow in `do_as_req` and `do_tgs_req` May Let Remote Users Execute Arbitrary Code
Platforms Affected:
- Canonical Ubuntu 4.10
- Canonical Ubuntu 5.04
- Conectiva Linux 10
- Conectiva Linux 9.0
- Debian Debian Linux 3.0
- Debian Debian Linux 3.1
- Gentoo Linux
- IBM OS 400
- Joey Dgen
- MandrakeSoft Mandrake Linux 10.0
- MandrakeSoft Mandrake Linux 10.0 AMD64
- MandrakeSoft Mandrake Linux 10.1 X86_64
- MandrakeSoft Mandrake Linux 10.1
- MandrakeSoft Mandrake Linux LE2005
- MandrakeSoft Mandrake Linux LE2005 X86_64
- MandrakeSoft Mandrake Linux Corporate Server 2.1
- MandrakeSoft Mandrake Linux Corporate Server 2.1 X86_64
- MandrakeSoft Mandrake Linux Corporate Server 3.0
- MandrakeSoft Mandrake Linux Corporate Server 3.0 X86_64
- MandrakeSoft Mandrake Multi Network Firewall 2.0
- MIT Kerberos 5-1.3
- MIT Kerberos 5-1.3.1
- MIT Kerberos 5-1.3.2
- MIT Kerberos 5-1.3.3
- MIT Kerberos 5-1.3.4
- MIT Kerberos 5-1.3.5
- MIT Kerberos 5-1.3.6
- MIT Kerberos 5-1.4
- MIT Kerberos 5-1.4.1
- RedHat Enterprise Linux 2.1 AS
- RedHat Enterprise Linux 2.1 ES
- RedHat Enterprise Linux 2.1 WS
- RedHat Enterprise Linux 3 AS
- RedHat Enterprise Linux 3 Desktop
- RedHat Enterprise Linux 3 ES
- RedHat Enterprise Linux 3 WS
- RedHat Enterprise Linux 4 Desktop
- RedHat Enterprise Linux 4 AS
- RedHat Enterprise Linux 4 ES
- RedHat Enterprise Linux 4 WS
- RedHat Linux Advanced Workstation 2.1 Itanium
- Turbolinux Turbolinux 10 Desktop
- Turbolinux Turbolinux 10 F...
- Turbolinux Turbolinux 10 Server
- Turbolinux Turbolinux 8 Server
- Turbolinux Turbolinux Home
- Turbolinux Turbolinux Appliance Server 1.0 Hosting Ed
- Turbolinux Turbolinux Appliance Server 1.0 Workgroup Ed
Reported:
Jul 12, 2005
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.