Florian Weimer of the Red Hat Product Security Team found that an unauthenticated user able to connect to the Condor startd TCP port could request ads, provided they could guess or brute force the PID of the process, due to how the GIVEREQUESTAD handler is registered. The ads contains a lot of already-public information for users with READ privileges, however it also provides the ClaimId (as opposed to the PublicClaimId which truncates the full value of the ClaimID). If an attacker could obtain the private ClaimId, they could use it to control the running job, and also start new jobs on the system.
The filesystem authentication (condorio/condorauthfs.cpp) in Condor 7.6.x before 7.6.10 and 7.8.x before 7.8.4 uses authentication directories even when they have weak permissions, which allows remote attackers to impersonate users by renaming a user's authentication directory.
Multiple unspecified vulnerabilities in Condor 7.6.x before 7.6.10 and 7.8.x before 7.8.4 have unknown impact and attack vectors related to "error checking of system calls."
Multiple buffer overflows in Condor 7.6.x before 7.6.10 and 7.8.x before 7.8.4 have unknown impact and attack vectors.