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The U.S. Department of Energy
Computer Incident Advisory Capability
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INFORMATION BULLETIN
storebackup -- several vulnerabilities
[DSA-1022-1]
April 4, 2006 22:00 GMT Number Q-163
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PROBLEM: Several vulnerabilities have been discovered in the backup
utility storebackup.
PLATFORM: Debian GNU/Linux 3.1 sarge, 1.18.4-2sarge1 and version 1.19-2
DAMAGE: Storebackup creates a temporary file predictably, which can be
exploited to overwrite arbitrary files on the system with a
symlink attack. The backup root directory is created with
world-readable permissions, which may leak sensitive data. The
user and group rights of symlinks are set incorrectly when
making or restoring a backup, which may leak sensitive data.
SOLUTION: Upgrade storebackup package.
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VULNERABILITY The risk is MEDIUM - Storebackup creates a temporary file
ASSESSMENT: predictably, which can be exploited to overwrite arbitrary
files on the system with a symlink attack. The backup root
directory is created with world-readable permissions, which may
leak sensitive data. The user and group rights of symlinks are
set incorrectly when making or restoring a backup, which may
leak sensitive data.
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LINKS:
CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/q-163shtml
ORIGINAL BULLETIN: http://www.debian.org/security/2006/dsa-1017
CVE: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=
CVE-2005-3146, CVE-2005-3147, CVE-2005-3148
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[***** Start DSA-1022-1 *****]
DSA-1022-1 storebackup -- several vulnerabilities
Date Reported:
04 Apr 2006
Affected Packages:
storebackup
Vulnerable:
Yes
Security database references:
In the Debian bugtracking system: Bug 332434.
In Mitre's CVE dictionary: CVE-2005-3146, CVE-2005-3147, CVE-2005-3148.
More information:
Several vulnerabilities have been discovered in the backup utility storebackup.
The Common Vulnerabilities and Exposures project identifies the following problems:
* CVE-2005-3146
Storebackup creates a temporary file predictably, which can be exploited to
overwrite arbitrary files on the system with a symlink attack.
* CVE-2005-3147
The backup root directory is created with world-readable permissions, which
may leak sensitive data.
* CVE-2005-3148
The user and group rights of symlinks are set incorrectly when making or
restoring a backup, which may leak sensitive data.
The old stable distribution (woody) doesn't contain storebackup packages.
For the stable distribution (sarge) these problems have been fixed in version 1.18.4-2sarge1.
For the unstable distribution (sid) these problems have been fixed in version 1.19-2.
We recommend that you upgrade your storebackup package.
Fixed in:
Debian GNU/Linux 3.1 (sarge)
Source:
http://security.debian.org/pool/updates/main/s/storebackup/storebackup_1.18.4-2sarge1.dsc
http://security.debian.org/pool/updates/main/s/storebackup/storebackup_1.18.4-2sarge1.diff.gz
http://security.debian.org/pool/updates/main/s/storebackup/storebackup_1.18.4.orig.tar.gz
Architecture-independent component:
http://security.debian.org/pool/updates/main/s/storebackup/storebackup_1.18.4-2sarge1_all.deb
MD5 checksums of the listed files are available in the original advisory.
[***** End DSA-1022-1 *****]
_______________________________________________________________________________
CIAC wishes to acknowledge the contributions of Debian Security Advisory for the
information contained in this bulletin.
_______________________________________________________________________________
CIAC, the Computer Incident Advisory Capability, is the computer
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