Double free vulnerability in the prepare_exec function in src/exec.c in Logsurfer 1.5b and earlier, and Logsurfer+ 1.7 and earlier, allows remote attackers to execute arbitrary commands via crafted strings in a log file.

Off-by-one buffer overflow in the context_action function in context.c of Logsurfer 1.41 through 1.5a allows remote attackers to cause a denial of service (crash) via a malformed log entry.