lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Message-ID: <42AAD4CA.1040106@gentoo.org> Date: Sun Jul 17 14:11:39 2005 From: koon at gentoo.org (Thierry Carrez) Subject: [gentoo-announce] [ GLSA 200506-08 ] GNU shtool, ocaml-mysql: Insecure temporary file creation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200506-08 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: GNU shtool, ocaml-mysql: Insecure temporary file creation Date: June 11, 2005 Bugs: #93782, #93784 ID: 200506-08 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== GNU shtool and ocaml-mysql are vulnerable to symlink attacks, potentially allowing a local user to overwrite arbitrary files. Background ========== GNU shtool is a compilation of small shell scripts into a single shell tool. The ocaml-mysql package includes the GNU shtool code. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-util/shtool < 2.0.1-r2 >= 2.0.1-r2 2 dev-ml/ocaml-mysql < 1.0.3-r1 >= 1.0.3-r1 ------------------------------------------------------------------- 2 affected packages on all of their supported architectures. ------------------------------------------------------------------- Description =========== Eric Romang has discovered that GNU shtool insecurely creates temporary files with predictable filenames (CAN-2005-1751). On closer inspection, Gentoo Security discovered that the shtool temporary file, once created, was being reused insecurely (CAN-2005-1759). Impact ====== A local attacker could create symbolic links in the temporary files directory, pointing to a valid file somewhere on the filesystem. When a GNU shtool script is executed, this would result in the file being overwritten with the rights of the user running the script, which could be the root user. Workaround ========== There is no known workaround at this time. Resolution ========== All GNU shtool users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=dev-util/shtool-2.0.1-r2" All ocaml-mysql users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=dev-ml/ocaml-mysql-1.0.3-r1" References ========== [ 1 ] CAN-2005-1751 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1751 [ 2 ] CAN-2005-1759 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1759 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200506-08.xml 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@...too.org or alternatively, you may file a bug at http://bugs.gentoo.org. License ======= Copyright 2005 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. http://creativecommons.org/licenses/by-sa/2.0 -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 256 bytes Desc: OpenPGP digital signature Url : http://lists.grok.org.uk/pipermail/full-disclosure/attachments/20050717/a3c73edf/signature.bin
Powered by blists - more mailing lists