Mail in Mac OS X before 10.3, when configured to use MD5 Challenge Response, uses plaintext authentication if the CRAM-MD5 hashed login fails, which could allow remote attackers to gain privileges by sniffing the password.

Mac OS X before 10.3 initializes the TCP timestamp with a constant number, which allows remote attackers to determine the system's uptime via the ID field in a TCP packet.

The Kerberos login authentication feature in Mac OS X, when used with an LDAPv3 server and LDAP bind authentication, may send cleartext passwords to the LDAP server when the AuthenticationAuthority attribute is not set.

IPSec in Mac OS X before 10.2.6 does not properly handle certain incoming security policies that match by port, which could allow traffic that is not explicitly allowed by the policies.

DirectoryServices in MacOS X trusts the PATH environment variable to locate and execute the touch command, which allows local users to execute arbitrary commands by modifying the PATH to point to a directory containing a malicious touch program.

Mac OS X before 10.2.5 allows guest users to modify the permissions of the DropBox folder and read unauthorized files.

The default configuration of Mail.app in Mac OS X 10.0 through 10.0.4 and 10.1 through 10.1.5 sends iDisk authentication credentials in cleartext when connecting to Mac.com, which could allow remote attackers to obtain passwords by sniffing network traffic.

Multiple buffer overflows in Cyrus SASL library 2.1.9 and earlier allow remote attackers to cause a denial of service and possibly execute arbitrary code via (1) long inputs during user name canonicalization, (2) characters that need to be escaped during LDAP authentication using saslauthd, or (3) an off-by-one error in the log writer, which does not allocate space for the null character that terminates a string.

The Sun RPC functionality in multiple libc implementations does not provide a time-out mechanism when reading data from TCP connections, which allows remote attackers to cause a denial of service (hang).

OpenSSL 0.9.6d and earlier, and 0.9.7-beta2 and earlier, does not properly handle ASCII representations of integers on 64 bit platforms, which could allow attackers to cause a denial of service and possibly execute arbitrary code.

Buffer overflows in OpenSSL 0.9.6d and earlier, and 0.9.7-beta2 and earlier, allow remote attackers to execute arbitrary code via (1) a large client master key in SSL2 or (2) a large session ID in SSL3.

The ASN1 library in OpenSSL 0.9.6d and earlier, and 0.9.7-beta2 and earlier, allows remote attackers to cause a denial of service via invalid encodings.

SoftwareUpdate for MacOS 10.1.x does not use authentication when downloading a software update, which could allow remote attackers to execute arbitrary code by posing as the Apple update server via techniques such as DNS spoofing or cache poisoning, and supplying Trojan Horse updates.

Point to Point Protocol daemon (pppd) in MacOS x 10.0 and 10.1 through 10.1.5 provides the username and password on the command line, which allows local users to obtain authentication information via the ps command.

Apple MacOS X 10.0 and 10.1 allow a local user to read and write to a user's desktop folder via insecure default permissions for the Desktop when it is created in some languages.

NetInfo Manager for Mac OS X 10.0 through 10.1 allows local users to gain root privileges by opening applications using the (1) "recent items" and (2) "services" menus, which causes the applications to run with root privileges.