envvars (aka envvars-std) in the Apache HTTP Server before 2.4.2 places a zero-length directory name in the LD_LIBRARY_PATH, which allows local users to gain privileges via a Trojan horse DSO in the current working directory during execution of apachectl.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 55.5%