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Gentoo: GLSA-202303-15 Critical: Rsnapshot Local Privilege Escalation

rsnapshot allow a local user to take ownership of local files, resulting in privilege escalation.. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200504-12 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: High Title: rsnapshot: Local privilege escalation Date: April 13, 2005 Bugs: #88681 ID: 200504-12 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= rsnapshot allow a local user to take ownership of local files, resulting in privilege escalation. Background ========= rsnapshot is a filesystem snapshot utility based on rsync, allowing local and remote systems backups. Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-misc/rsnapshot < 1.2.1 > = 1.2.1 Description ========== The copy_symlink() subroutine in rsnapshot follows symlinks when changing file ownership, instead of changing the ownership of the symlink itself. Impact ===== Under certain circumstances, local attackers can exploit this vulnerability to take ownership of arbitrary files, resulting in local privilege escalation. Workaround ========= The copy_symlink() subroutine is not called if the cmd_cp parameter has been enabled. Resolution ========= All rsnapshot users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose "> =net-misc/rsnapshot-1.2.1" References ========= [ 1 ] rsnapshot Security Advisory 001 Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/200504-12 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 This email address is being protected from spambots. You need JavaScript enabled to view it. or alternatively, you may file a bug at https://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. https://creativecommons.org/licenses/by-sa/2.0/ . An essential Gentoo notice addressing local privilege escalation vulnerabilities in rsnapshot outlines remediation measures and the associated security ramifications.. rsnapshot, Local Escalation, Gentoo Linux, Security Advisory. . Severity: Critical. LinuxSecurity.com Team

Apr 13, 2005 •Critical Gentoo