The GridFTP in Globus Toolkit (GT) before 5.2.2, when certain autoconf macros are defined, does not properly check the return value from the getpwnam_r function, which might allow remote attackers to gain privileges by logging in with a user that does not exist, which causes GridFTP to run as the last user in the password file.

MyProxy 5.0 through 5.2, as used in Globus Toolkit 5.0.0 through 5.0.2, does not properly verify the (1) hostname or (2) identity in the X.509 certificate for the myproxy-server, which allows remote attackers to spoof the server and conduct man-in-the-middle (MITM) attacks via a crafted certificate when executing (a) myproxy-logon or (b) myproxy-get-delegation.

Unspecified vulnerability in globus-job-manager in Globus Toolkit 4.1.1 and earlier (globus_nexus-6.6 and earlier) allows remote attackers to cause a denial of service (resource exhaustion and system crash) via certain requests to temporary TCP ports for a GRAM2 job or its MPICH-G2 applications.

Globus Toolkit 3.2.x, 4.0.x, and 4.1.0 before 20060815 allow local users to obtain sensitive information (proxy certificates) and overwrite arbitrary files via a symlink attack on temporary files in the /tmp directory, as demonstrated by files created by (1) myproxy-admin-adduser, (2) grid-ca-sign, and (3) grid-security-config.

Race condition in the grid-proxy-init tool in Globus Toolkit 3.2.x, 4.0.x, and 4.1.0 before 20060815 allows local users to steal credential data by replacing the proxy credentials file in between file creation and the check for exclusive file access.