Cron Utility Allows Local Users to Obtain Root-Level Privileges
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SecurityTracker Alert ID: 1001489 |
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SecurityTracker URL: http://securitytracker.com/id/1001489
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CVE Reference:
GENERIC-MAP-NOMATCH
(Links to External Site)
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Updated: May 8 2001
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Original Entry Date: May 8 2001
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Impact:
Execution of arbitrary code via local system, Root access via local system
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): prior to 3.0pl1-57.3
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Description:
A vulnerability was reported in the Vixie cron utility that allows local users to obtain root-level privileges on the host.
It is reported that a recent (fall 2000) security fix to cron introduced this vulnerability. The utility apparently does not properly release privileges before invoking the editor, allowing a local user to execute commands on the host with root-level privileges.
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Impact:
A local user can execute commands on the host with root-level privileges, thereby obtaining root level access to the host.
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Solution:
This has been fixed in version 3.0pl1-57.3 (or 3.0pl1-67 for unstable). See the Debian Security Advisory in the Source Message for more details.
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Vendor URL: www.debian.org/security/ (Links to External Site)
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Cause:
State error
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Underlying OS:
Linux (Any), UNIX (Any)
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Message History:
This archive entry has one or more follow-up message(s) listed below.
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Source Message Contents
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Date: Mon, 7 May 2001 14:11:21 +0200
Subject: [SECURITY] [DSA-054-1] cron local root exploit
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-----BEGIN PGP SIGNED MESSAGE-----
- ------------------------------------------------------------------------
Debian Security Advisory DSA-054-1 security@debian.org
http://www.debian.org/security/ Wichert Akkerman
May 7, 2001
- ------------------------------------------------------------------------
Package : cron
Problem type : local root exploit
Debian-specific: no
A recent (fall 2000) security fix to cron introduced an error in giving
up privileges before invoking the editor. A malicious user could
easily gain root access.
This has been fixed in version 3.0pl1-57.3 (or 3.0pl1-67 for unstable).
No exploits are known to exist, but we recommend that you upgrade your
cron packages immediately.
wget url
will fetch the file for you
dpkg -i file.deb
will install the referenced file.
Debian GNU/Linux 2.2 alias potato
- ---------------------------------
Potato was released for alpha, arm, i386, m68k, powerpc and sparc.
Source archives:
http://security.debian.org/dists/stable/updates/main/source/cron_3.0pl1-57.3.diff.gz
MD5 checksum: beef030f2642e0e3178cc1fcddd3601f
http://security.debian.org/dists/stable/updates/main/source/cron_3.0pl1-57.3.dsc
MD5 checksum: 898496ede6e71287a50acabd0a9bfdc0
http://security.debian.org/dists/stable/updates/main/source/cron_3.0pl1.orig.tar.gz
MD5 checksum: 4c64aece846f8483daf440f8e3dd210f
Alpha architecture:
http://security.debian.org/dists/stable/updates/main/binary-alpha/cron_3.0pl1-57.3_alpha.deb
MD5 checksum: b056a55f3d51d92390f6e4b7c09f8108
ARM architecture:
http://security.debian.org/dists/stable/updates/main/binary-arm/cron_3.0pl1-57.3_arm.deb
MD5 checksum: 0ebd5904db1e137caa53e83d085f5973
Intel ia32 architecture:
http://security.debian.org/dists/stable/updates/main/binary-i386/cron_3.0pl1-57.3_i386.deb
MD5 checksum: 6a11a3427bd263429f8189054b67add7
Motorola 680x0 architecture:
http://security.debian.org/dists/stable/updates/main/binary-m68k/cron_3.0pl1-57.3_m68k.deb
MD5 checksum: eb9993da9cc3c5d5188866ca453c0ab7
PowerPC architecture:
http://security.debian.org/dists/stable/updates/main/binary-powerpc/cron_3.0pl1-57.3_powerpc.deb
MD5 checksum: 17d1109ce6eeb714a09f864bb244f804
Sun Sparc architecture:
http://security.debian.org/dists/stable/updates/main/binary-sparc/cron_3.0pl1-57.3_sparc.deb
MD5 checksum: 9486a5eaa675ada6a5bbfaca2fa2a9ef
These packages will be moved into the stable distribution on its next
revision.
For not yet released architectures please refer to the appropriate
directory ftp://ftp.debian.org/debian/dists/sid/binary-$arch/ .
- --
- ----------------------------------------------------------------------------
apt-get: deb http://security.debian.org/ stable/updates main
dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
Mailing list: debian-security-announce@lists.debian.org
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