a2ps 4.13 allows remote attackers to execute arbitrary commands via shell metacharacters in the filename.

The (1) fixps (aka fixps.in) and (2) psmandup (aka psmandup.in) scripts in a2ps before 4.13 allow local users to overwrite arbitrary files via a symlink attack on temporary files.

a2ps: output_file() format string flaw

Format string vulnerability in GNU a2ps 4.14 allows remote attackers to execute arbitrary code.

a2ps: insecure temporary file use

The tempname_ensure function in lib/routines.h in a2ps 4.14 and earlier, as used by the spy_user function and possibly other functions, allows local users to modify arbitrary files via a symlink attack on a temporary file.

a2ps: fixps does not invoke gs with -dSAFER

The fixps script in a2ps 4.14 does not use the -dSAFER option when executing gs, which allows context-dependent attackers to delete arbitrary files or execute arbitrary commands via a crafted PostScript file.