|
|
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200402-04 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ~ http://security.gentoo.org - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ~ Severity: Normal ~ Title: Gallery <= 1.4.1 remote exploit vulnerability ~ Date: February 11, 2004 ~ Bugs: #39638 ~ ID: 200402-04 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== The Gallery developers have discovered a potentially serious security flaw in Gallery 1.3.1, 1.3.2, 1.3.3, 1.4 and 1.4.1 which can a remote exploit of your webserver. Background ========== Gallery is an open source image management system written in PHP. More information is available at http://gallery.sourceforge.net. Description =========== Starting in the 1.3.1 release, Gallery includes code to simulate the behaviour of the PHP 'register_globals' variable in environments where that setting is disabled. It is simulated by extracting the values of the various $HTTP_ global variables into the global namespace. Impact ====== A crafted URL such as http://example.com/gallery/init.php?HTTP_POST_VARS=xxx causes the 'register_globals' simulation code to overwrite the $HTTP_POST_VARS which, when it is extracted, will deliver the given payload. If the payload compromises $GALLERY_BASEDIR then the malicious user can perform a PHP injection exploit and gain remote access to the webserver with PHP user UID access rights. Workaround ========== The workaround for the vulnerability is to replace "init.php" and "setup/init.php" with the files in the following ZIP file: http://prdownloads.sourceforge.net/gallery/patch_1.4.1-to-1.4.1-pl1.zip? download Resolution ========== All users are encouraged to upgrade their gallery installation: ~ # emerge sync ~ # emerge -p ">=app-misc/gallery-1.4.1_p1" ~ # emerge ">=app-misc/gallery-1.4.1_p1" Concerns? ========= Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at http://bugs.gentoo.org. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFAKpzqMMXbAy2b2EIRAut+AJ9YoJa90874PYeNjs6z2Kv0Rho9/gCg71wT I8LE+RBEJjdVIC04nz9dKh0= =+v3e -----END PGP SIGNATURE-----