The cupsFileOpen function in CUPS before 1.4.4 allows local users, with lp group membership, to overwrite arbitrary files via a symlink attack on the (1) /var/cache/cups/remote.cache or (2) /var/cache/cups/job.cache file.
Exploitability
AV:LAC:HAu:NImpact
C:NI:PA:P2.6/AV:L/AC:H/Au:N/C:N/I:P/A:P