Double free vulnerability in the GSS-API library (lib/gssapi/krb5/k5unseal.c), as used by the Kerberos administration daemon (kadmind) in MIT krb5 before 1.6.1, when used with the authentication method provided by the RPCSEC_GSS RPC library, allows remote authenticated users to execute arbitrary code and modify the Kerberos key database via a message with an an invalid direction encoding.
Weakness
The product calls free() twice on the same memory address.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Kerberos_5 | Mit | * | 1.6.1 (excluding) |
| Red Hat Enterprise Linux 2.1 | RedHat | krb5-0:1.2.2-44 | * |
| Red Hat Enterprise Linux 3 | RedHat | krb5-0:1.2.7-61 | * |
| Red Hat Enterprise Linux 4 | RedHat | krb5-0:1.3.4-46 | * |
| Red Hat Enterprise Linux 5 | RedHat | krb5-0:1.5-23 | * |
| Krb5 | Ubuntu | dapper | * |
| Krb5 | Ubuntu | devel | * |
| Krb5 | Ubuntu | edgy | * |
| Krb5 | Ubuntu | feisty | * |
Potential Mitigations
References
- ftp://patches.sgi.com/support/free/security/advisories/20070401-01-P.asc
- http://docs.info.apple.com/article.html?artnum=305391
- http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en\u0026cc=us\u0026objectID=c01056923
- http://lists.apple.com/archives/Security-announce/2007/Apr/msg00001.html
- http://lists.suse.com/archive/suse-security-announce/2007-Apr/0001.html
- http://secunia.com/advisories/24706
- http://secunia.com/advisories/24735
- http://secunia.com/advisories/24736
- http://secunia.com/advisories/24740
- http://secunia.com/advisories/24750
- http://secunia.com/advisories/24757
- http://secunia.com/advisories/24785
- http://secunia.com/advisories/24786
- http://secunia.com/advisories/24817
- http://secunia.com/advisories/24966
- http://secunia.com/advisories/25388
- http://security.gentoo.org/glsa/glsa-200704-02.xml
- http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2007-003.txt
- http://www.debian.org/security/2007/dsa-1276
- http://www.kb.cert.org/vuls/id/419344
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:077
- http://www.redhat.com/support/errata/RHSA-2007-0095.html
- http://www.securityfocus.com/archive/1/464591/100/0/threaded
- http://www.securityfocus.com/archive/1/464666/100/0/threaded
- http://www.securityfocus.com/archive/1/464814/30/7170/threaded
- http://www.securityfocus.com/bid/23282
- http://www.securitytracker.com/id?1017852
- http://www.ubuntu.com/usn/usn-449-1
- http://www.us-cert.gov/cas/techalerts/TA07-093B.html
- http://www.us-cert.gov/cas/techalerts/TA07-109A.html
- http://www.vupen.com/english/advisories/2007/1218
- http://www.vupen.com/english/advisories/2007/1470
- http://www.vupen.com/english/advisories/2007/1916
- https://exchange.xforce.ibmcloud.com/vulnerabilities/33413
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11135
- ftp://patches.sgi.com/support/free/security/advisories/20070401-01-P.asc
- http://docs.info.apple.com/article.html?artnum=305391
- http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en\u0026cc=us\u0026objectID=c01056923
- http://lists.apple.com/archives/Security-announce/2007/Apr/msg00001.html
- http://lists.suse.com/archive/suse-security-announce/2007-Apr/0001.html
- http://secunia.com/advisories/24706
- http://secunia.com/advisories/24735
- http://secunia.com/advisories/24736
- http://secunia.com/advisories/24740
- http://secunia.com/advisories/24750
- http://secunia.com/advisories/24757
- http://secunia.com/advisories/24785
- http://secunia.com/advisories/24786
- http://secunia.com/advisories/24817
- http://secunia.com/advisories/24966
- http://secunia.com/advisories/25388
- http://security.gentoo.org/glsa/glsa-200704-02.xml
- http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2007-003.txt
- http://www.debian.org/security/2007/dsa-1276
- http://www.kb.cert.org/vuls/id/419344
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:077
- http://www.redhat.com/support/errata/RHSA-2007-0095.html
- http://www.securityfocus.com/archive/1/464591/100/0/threaded
- http://www.securityfocus.com/archive/1/464666/100/0/threaded
- http://www.securityfocus.com/archive/1/464814/30/7170/threaded
- http://www.securityfocus.com/bid/23282
- http://www.securitytracker.com/id?1017852
- http://www.ubuntu.com/usn/usn-449-1
- http://www.us-cert.gov/cas/techalerts/TA07-093B.html
- http://www.us-cert.gov/cas/techalerts/TA07-109A.html
- http://www.vupen.com/english/advisories/2007/1218
- http://www.vupen.com/english/advisories/2007/1470
- http://www.vupen.com/english/advisories/2007/1916
- https://exchange.xforce.ibmcloud.com/vulnerabilities/33413
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11135