Description
The unparse implementation in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.6.x through 1.9, when an LDAP backend is used, allows remote attackers to cause a denial of service (file descriptor exhaustion and daemon hang) via a principal name that triggers use of a backslash escape sequence, as demonstrated by a \n sequence.
Affected products
- MIT / kerberos5-1.6.3 – 5-1.6.3
- MIT / Kerberos 51.6 – 1.6
- MIT / Kerberos 51.6.1 – 1.6.1
- MIT / Kerberos 51.6.2 – 1.6.2
- MIT / Kerberos 51.7 – 1.7
- MIT / Kerberos 51.7.1 – 1.7.1
- MIT / Kerberos 51.8 – 1.8
- MIT / Kerberos 51.8.1 – 1.8.1
- MIT / Kerberos 51.8.2 – 1.8.2
- MIT / Kerberos 51.8.3 – 1.8.3
- MIT / Kerberos 51.9 – 1.9
References
- VENDOR_ADVISORYhttp://www.mandriva.com/security/advisories?name=MDVSA-2011:025
- MISChttp://www.securityfocus.com/bid/46265
- MISChttp://www.securityfocus.com/archive/1/520102/100/0/threaded
- VENDOR_ADVISORYhttp://secunia.com/advisories/46397
- VENDOR_ADVISORYhttp://www.vupen.com/english/advisories/2011/0347
- VENDOR_ADVISORYhttp://secunia.com/advisories/43260
- VENDOR_ADVISORYhttp://www.vupen.com/english/advisories/2011/0333
- MISChttp://www.redhat.com/support/errata/RHSA-2011-0199.html
- VENDOR_ADVISORYhttp://secunia.com/advisories/43273
- VENDOR_ADVISORYhttp://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-002.txt
- MISChttp://www.securityfocus.com/archive/1/516299/100/0/threaded
- MISChttp://www.securitytracker.com/id?1025037
- MAILING_LISThttp://lists.opensuse.org/opensuse-security-announce/2011-02/msg00004.html
- VENDOR_ADVISORYhttp://www.vmware.com/security/advisories/VMSA-2011-0012.html
- VENDOR_ADVISORYhttp://www.mandriva.com/security/advisories?name=MDVSA-2011:024
- VENDOR_ADVISORYhttp://www.vupen.com/english/advisories/2011/0464
- MISChttp://securityreason.com/securityalert/8073
- MISChttps://exchange.xforce.ibmcloud.com/vulnerabilities/65324
- VENDOR_ADVISORYhttp://www.vupen.com/english/advisories/2011/0330
- MAILING_LISThttp://mailman.mit.edu/pipermail/kerberos/2010-December/016800.html
- VENDOR_ADVISORYhttp://secunia.com/advisories/43275
- MISChttp://www.redhat.com/support/errata/RHSA-2011-0200.html