FreeBSD : OpenSMTPD -- multiple vulnerabilities (ee7bdf7f-11bb-4eea-b054-c692ab848c20)
High Nessus Plugin ID 86268
SynopsisThe remote FreeBSD host is missing a security-related update.
DescriptionOpenSMTPD developers report :
an oversight in the portable version of fgetln() that allows attackers to read and write out-of-bounds memory
multiple denial-of-service vulnerabilities that allow local users to kill or hang OpenSMTPD
a stack-based buffer overflow that allows local users to crash OpenSMTPD, or execute arbitrary code as the non-chrooted _smtpd user
a hardlink attack (or race-conditioned symlink attack) that allows local users to unset the chflags() of arbitrary files
a hardlink attack that allows local users to read the first line of arbitrary files (for example, root's hash from /etc/master.passwd)
a denial-of-service vulnerability that allows remote attackers to fill OpenSMTPD's queue or mailbox hard-disk partition
an out-of-bounds memory read that allows remote attackers to crash OpenSMTPD, or leak information and defeat the ASLR protection
a use-after-free vulnerability that allows remote attackers to crash OpenSMTPD, or execute arbitrary code as the non-chrooted _smtpd user
SolutionUpdate the affected package.