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CVE-2012-4455

Published: 10 October 2012

openCryptoki 2.4.1 allows local users to create or set world-writable permissions on arbitrary files via a symlink attack on the (1) LCK..opencryptoki or (2) LCK..opencryptoki_stdll file in /var/lock/.

Notes

AuthorNote
mdeslaur
2.4.1 moved lock files from /tmp to /var/lock, but /var/lock is
world writable on certain distros, such as debian and ubuntu.
2.4.2 moved them to /var/lock/opencryptoki
members of the pkcs11 group are considered trusted by upstream
and can escalate privileges to root even after the upstream
patches. See oss-security discussion.
Moving this to /var/lock/opencryptoki makes the problem worse
for members of the pkcs11 group as that directory wouldn't be
covered by symlink restrictions. Fix shouldn't be applied to
natty+
Fixing this in lucid would only prevent users who are not in
the pkcs11 group from escalating permissions. Since it is likely
that local users that have this installed are in that group,
this is downgraded to low.

Priority

Low

Status

Package Release Status
opencryptoki
Launchpad, Ubuntu, Debian
artful Ignored
(end of life)
bionic Not vulnerable
(3.4.1+dfsg-1)
cosmic Not vulnerable
(3.4.1+dfsg-1)
disco Not vulnerable
(3.4.1+dfsg-1)
hardy Ignored
(end of life)
lucid Ignored
(end of life)
natty Ignored
(end of life)
oneiric Ignored
(end of life)
precise Ignored
(end of life)
quantal Ignored
(end of life)
raring Ignored
(end of life)
saucy Ignored
(end of life)
trusty Does not exist
(trusty was needed)
upstream
Released (2.4.2)
utopic Ignored
(end of life)
vivid Ignored
(end of life)
wily Ignored
(end of life)
xenial Not vulnerable
(3.4.1+dfsg-1)
yakkety Ignored
(end of life)
zesty Ignored
(end of life)
Patches:
upstream: http://opencryptoki.git.sourceforge.net/git/gitweb.cgi?p=opencryptoki/opencryptoki;a=commitdiff;h=b7fcb3eb0319183348f1f4fb90ede4edd6487c30 (pt1)
upstream: http://opencryptoki.git.sourceforge.net/git/gitweb.cgi?p=opencryptoki/opencryptoki;a=commitdiff;h=58345488c9351d9be9a4be27c8b407c2706a33a9 (pt2)
upstream: http://opencryptoki.git.sourceforge.net/git/gitweb.cgi?p=opencryptoki/opencryptoki;a=commitdiff;h=8a63b3b17d34718d0f8c7525f93b5eb3c623076a (pt3)
upstream: http://opencryptoki.git.sourceforge.net/git/gitweb.cgi?p=opencryptoki/opencryptoki;a=commitdiff;h=5667edb52cd27b7e512f48f823b4bcc6b872ab15 (pt4)