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Gentoo Linux Security Advisory GLSA 200504-12 |
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http://security.gentoo.org/ |
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Severity: High |
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Title: rsnapshot: Local privilege escalation |
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Date: April 13, 2005 |
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Bugs: #88681 |
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ID: 200504-12 |
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Synopsis |
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======== |
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|
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rsnapshot allow a local user to take ownership of local files, |
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resulting in privilege escalation. |
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Background |
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========== |
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|
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rsnapshot is a filesystem snapshot utility based on rsync, allowing |
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local and remote systems backups. |
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|
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 net-misc/rsnapshot < 1.2.1 >= 1.2.1 |
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Description |
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=========== |
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|
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The copy_symlink() subroutine in rsnapshot follows symlinks when |
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changing file ownership, instead of changing the ownership of the |
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symlink itself. |
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Impact |
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====== |
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Under certain circumstances, local attackers can exploit this |
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vulnerability to take ownership of arbitrary files, resulting in local |
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privilege escalation. |
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Workaround |
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========== |
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The copy_symlink() subroutine is not called if the cmd_cp parameter has |
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been enabled. |
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Resolution |
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========== |
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All rsnapshot users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-misc/rsnapshot-1.2.1" |
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References |
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========== |
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[ 1 ] rsnapshot Security Advisory 001 |
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http://www.rsnapshot.org/security/2005/001.html |
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Availability |
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============ |
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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http://security.gentoo.org/glsa/glsa-200504-12.xml |
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Concerns? |
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========= |
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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http://bugs.gentoo.org. |
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License |
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======= |
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Copyright 2005 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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http://creativecommons.org/licenses/by-sa/2.0 |
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