ID CVE-2011-0281
Summary 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.
References
Vulnerable Configurations
  • cpe:2.3:a:mit:kerberos:5-1.6.3:*:*:*:*:*:*:*
    cpe:2.3:a:mit:kerberos:5-1.6.3:*:*:*:*:*:*:*
  • cpe:2.3:a:mit:kerberos_5:1.6:*:*:*:*:*:*:*
    cpe:2.3:a:mit:kerberos_5:1.6:*:*:*:*:*:*:*
  • cpe:2.3:a:mit:kerberos_5:1.6.1:*:*:*:*:*:*:*
    cpe:2.3:a:mit:kerberos_5:1.6.1:*:*:*:*:*:*:*
  • cpe:2.3:a:mit:kerberos_5:1.6.2:*:*:*:*:*:*:*
    cpe:2.3:a:mit:kerberos_5:1.6.2:*:*:*:*:*:*:*
  • cpe:2.3:a:mit:kerberos_5:1.7:*:*:*:*:*:*:*
    cpe:2.3:a:mit:kerberos_5:1.7:*:*:*:*:*:*:*
  • cpe:2.3:a:mit:kerberos_5:1.7.1:*:*:*:*:*:*:*
    cpe:2.3:a:mit:kerberos_5:1.7.1:*:*:*:*:*:*:*
  • cpe:2.3:a:mit:kerberos_5:1.8:*:*:*:*:*:*:*
    cpe:2.3:a:mit:kerberos_5:1.8:*:*:*:*:*:*:*
  • cpe:2.3:a:mit:kerberos_5:1.8.1:*:*:*:*:*:*:*
    cpe:2.3:a:mit:kerberos_5:1.8.1:*:*:*:*:*:*:*
  • cpe:2.3:a:mit:kerberos_5:1.8.2:*:*:*:*:*:*:*
    cpe:2.3:a:mit:kerberos_5:1.8.2:*:*:*:*:*:*:*
  • cpe:2.3:a:mit:kerberos_5:1.8.3:*:*:*:*:*:*:*
    cpe:2.3:a:mit:kerberos_5:1.8.3:*:*:*:*:*:*:*
  • cpe:2.3:a:mit:kerberos_5:1.9:*:*:*:*:*:*:*
    cpe:2.3:a:mit:kerberos_5:1.9:*:*:*:*:*:*:*
CVSS
Base: 5.0 (as of 10-10-2018 - 20:09)
Impact:
Exploitability:
CWE CWE-310
CAPEC
  • Signature Spoofing by Key Recreation
    An attacker obtains an authoritative or reputable signer's private signature key by exploiting a cryptographic weakness in the signature algorithm or pseudorandom number generation and then uses this key to forge signatures from the original signer to mislead a victim into performing actions that benefit the attacker.
Access
VectorComplexityAuthentication
NETWORK LOW NONE
Impact
ConfidentialityIntegrityAvailability
NONE NONE PARTIAL
cvss-vector via4 AV:N/AC:L/Au:N/C:N/I:N/A:P
redhat via4
advisories
  • rhsa
    id RHSA-2011:0199
  • rhsa
    id RHSA-2011:0200
rpms
  • krb5-devel-0:1.6.1-55.el5_6.1
  • krb5-libs-0:1.6.1-55.el5_6.1
  • krb5-server-0:1.6.1-55.el5_6.1
  • krb5-server-ldap-0:1.6.1-55.el5_6.1
  • krb5-workstation-0:1.6.1-55.el5_6.1
  • krb5-devel-0:1.8.2-3.el6_0.4
  • krb5-libs-0:1.8.2-3.el6_0.4
  • krb5-pkinit-openssl-0:1.8.2-3.el6_0.4
  • krb5-server-0:1.8.2-3.el6_0.4
  • krb5-server-ldap-0:1.8.2-3.el6_0.4
  • krb5-workstation-0:1.8.2-3.el6_0.4
refmap via4
bid 46265
bugtraq
  • 20110208 MITKRB5-SA-2011-002 KDC denial of service attacks [CVE-2011-0281 CVE-2011-0282 CVE-2011-0283]
  • 20111013 VMSA-2011-0012 VMware ESXi and ESX updates to third party libraries and ESX Service Console
confirm
mandriva
  • MDVSA-2011:024
  • MDVSA-2011:025
mlist [kerberos] 20101222 LDAP handle unavailable: Can't contact LDAP server
sectrack 1025037
secunia
  • 43260
  • 43273
  • 43275
  • 46397
sreason 8073
suse SUSE-SR:2011:004
vupen
  • ADV-2011-0330
  • ADV-2011-0333
  • ADV-2011-0347
  • ADV-2011-0464
xf kerberos-ldap-descriptor-dos(65324)
Last major update 10-10-2018 - 20:09
Published 10-02-2011 - 18:00
Last modified 21-01-2020 - 15:46
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