Gert Doering

An issue was discovered in mgetty before 1.2.1. In contrib/next-login/login.c, the command-line parameter username is passed unsanitized to strcpy(), which can cause a stack-based buffer overflow.

faxrunqd.in in mgetty 1.1.28 and earlier allows local users to overwrite files via a symlink attack on JOB files.

The faxrunq and faxrunqd in the mgetty package allows local users to create or modify arbitrary files via a symlink attack which creates a symlink in from /var/spool/fax/outgoing/.last_run to the target file.

mgetty prior to version 1.2.1 is affected by: Infinite Loop. The impact is: DoS, the program does never terminates. The component is: g3/g32pbm.c. The attack vector is: Local, the user should open a specially crafted file. The fixed version is: 1.2.1.

mgetty prior to 1.2.1 is affected by: out-of-bounds read. The impact is: DoS, the program may crash if the memory is not mapped. The component is: putwhitespan() in g3/pbm2g3.c. The attack vector is: Local, the victim must open a specially crafted file. The fixed version is:…

faxspool in mgetty 1.1.36 allows local users to overwrite arbitrary files via a symlink attack on a /tmp/faxsp.##### temporary file.

cnd.c in mgetty 1.1.28 and earlier does not properly filter non-printable characters and quotes, which may allow remote attackers to execute arbitrary commands via shell metacharacters in (1) caller ID or (2) caller name strings.

Buffer overflow in cnd-program for mgetty before 1.1.29 allows remote attackers to cause a denial of service and possibly execute arbitrary code via a Caller ID string with a long CallerName argument.

faxspool in mgetty before 1.1.29 uses a world-writable spool directory for outgoing faxes, which allows local users to modify fax transmission privileges.

mgetty 1.1.22 allows local users to overwrite arbitrary files via a symlink attack in some configurations.