A null pointer dereference flaw was found in Kerberos's GSS-API spnego security mechanism implemenation. A local user could use this flaw to cause a denial of service (krb5 daemon crash) via invalid ContextFlags for the reqFlags field in the NegTokenInit (RFC 4178).
References: http://krbdev.mit.edu/rt/Ticket/Display.html?user=guest&pass=guest&id=6402
Upstream patch: http://src.mit.edu/fisheye/changelog/krb5/?cs=22099
Use-after-free vulnerability in kadmin/server/serverstubs.c in kadmind in MIT Kerberos 5 (aka krb5) 1.5 through 1.6.3 allows remote authenticated users to cause a denial of service (daemon crash) via a request from a kadmin client that sends an invalid API version number.
The original patch for CVE-2007-3999 in svcauthgss.c in the RPCSECGSS RPC library in MIT Kerberos 5 (krb5) 1.4 through 1.6.2, as used by the Kerberos administration daemon (kadmind) and other applications that use krb5, does not correctly check the buffer length in some environments and architectures, which might allow remote attackers to conduct a buffer overflow attack.
MIT notified us of kadmind RPC lib buffer overflow, uninitialized pointer. Will be public on 04 September 2007, at 14:00 US/Eastern time.
This issue has not been triaged as it may well affect recent RHEL distributions with a different severity (flaw type is likely caught by fortifysource)
MIT notified us of a kadmind uninitialized pointer. Will be public on 04 September 2007, at 14:00 US/Eastern time.
This issue has not been triaged as it may well affect recent RHEL distributions with a different severity (flaw type is likely caught by fortifysource)
Stack-based buffer overflow in the renameprincipal2svc function in kadmind for MIT Kerberos 1.5.3, 1.6.1, and other versions allows remote authenticated users to execute arbitrary code via a crafted request to rename a principal.
Integer signedness error in the gssrpcsvcauthunix function in svcauthunix.c in the RPC library in MIT Kerberos 5 (krb5) 1.6.1 and earlier might allow remote attackers to execute arbitrary code via a negative length value.
The gssrpcsvcauthgssapi function in the RPC library in MIT Kerberos 5 (krb5) 1.6.1 and earlier might allow remote attackers to execute arbitrary code via a zero-length RPC credential, which causes kadmind to free an uninitialized pointer during cleanup.
The asn1decodegeneraltime function in lib/krb5/asn.1/asn1decode.c in the ASN.1 GeneralizedTime decoder in MIT Kerberos 5 (aka krb5) before 1.6.4 allows remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code via vectors involving an invalid DER encoding that triggers a free of an uninitialized pointer.
The getinputtoken function in the SPNEGO implementation in MIT Kerberos 5 (aka krb5) 1.5 through 1.6.3 allows remote attackers to cause a denial of service (daemon crash) and possibly obtain sensitive information via a crafted length value that triggers a buffer over-read.
Off-by-one error in the krb5encodekrbsecretkey function in plugins/kdb/ldap/libkdbldap/ldapprincipal2.c in the LDAP KDB module in kadmind in MIT Kerberos 5 (aka krb5) 1.6.x through 1.11.x before 1.11.6 and 1.12.x before 1.12.2 allows remote authenticated users to cause a denial of service (buffer overflow) or possibly execute arbitrary code via a series of "cpw -keepold" commands.