Bug#482476: Security: Unsafe lock file creation can be used to truncate arbitrary files

reassign 482476 apt 0.7.11 title Security: Symlink traversal in GetLock() can truncate arbitrary files thanks Since the function at fault is in apt's libapt-pkg, not aptitude itself, reassigning to APT. See below for bug description. I am currently testing a patch for this and will follow up short

Bug#482476: Security: Unsafe lock file creation can be used to truncate arbitrary files

Package: aptitude Version: 0.4.11.2-1 Severity: serious Since /var/lock is installed with mode 1777 on debian systems, if /var/lock/aptitude does not yet exist, a normal user can symlink it to an arbitrary location on the filesystem. Aptitude them attempts to open this file with mode O_TRUNC, allo