(Apple Issues Fix) Sendmail Ruleset Buffer Overflow Has Unspecified Impact
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SecurityTracker Alert ID: 1007779 |
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SecurityTracker URL: http://securitytracker.com/id/1007779
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CVE Reference:
CAN-2003-0681
(Links to External Site)
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Date: Sep 23 2003
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Impact:
Not specified
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): 8.12.9 and prior versions
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Description:
A buffer overflow vulnerability was reported in Sendmail in certain non-default configurations. The impact was not reported.
It is reported that if non-standard recipient (2), final (4), or mailer-specific envelope rulesets are enabled, a potential buffer overflow may occur. The overflow reportedly exists in the ruleset parsing process.
The default configuration is reported to be not vulnerable.
Timo Sirainen is credited with reporting this flaw.
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Impact:
The impact was not disclosed.
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Solution:
Apple has issued a fix as part of Mac OS X 10.2.8. The update is available via:
* Software Update pane in System Preferences
* Apple's Software Downloads web site
The following updates are available via the Apple Software Download site:
Mac OS X Client (updating from 10.2 - 10.2.5):
http://www.info.apple.com/kbnum/n120244
The download file is: "MacOSXUpdateCombo10.2.8.dmg"
The SHA-1 digest is: 47c4e354516d7d577c57389207e4207f2b9b2ea2
Mac OS X Client (updating from 10.2.6 - 10.2.7):
http://www.info.apple.com/kbnum/n120245
The download file is: "MacOSXUpdate10.2.8.dmg"
The SHA-1 digest is: 2fd24114274f9a1c59b2eb492301a90234215c73
Mac OS X Server (updating from 10.2 - 10.2.5):
http://www.info.apple.com/kbnum/n120246
The download file is: "MacOSXSrvrUpdCombo10.2.8.dmg"
The SHA-1 digest is: d87b3e7bd5668046f22b551ccf9bb75a4139e653
Mac OS X Server (updating from 10.2.6 - 10.2.7):
http://www.info.apple.com/kbnum/n120247
The download file is: "MacOSXServerUpdate10.2.8.dmg"
The SHA-1 digest is: 74ce19ab7488a41328bee2ba7156489f997abe7c
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Vendor URL: www.sendmail.org/8.12.10.html (Links to External Site)
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Cause:
Boundary error
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Underlying OS:
UNIX (OS X)
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Message History:
This archive entry is a follow-up to the message listed below.
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Source Message Contents
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Date: Mon, 22 Sep 2003 16:18:22 -0700
Subject: APPLE-SA-2003-09-22 Mac OS X 10.2.8
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
APPLE-SA-2003-09-22 Mac OS X 10.2.8
Mac OS X 10.2.8 is now available. It contains fixes for recent
vulnerabilities in:
OpenSSH: Mac OS X 10.2.8 contains the patches to address CVE
CAN-2003-0693, CAN-2003-0695, and CAN-2003-0682. On Mac OS X
versions prior to 10.2.8, the vulnerability is limited to a denial
of service from the possibility of causing sshd to crash. Each
login session has its own sshd, so established connections are
preserved up to the point where system resources are exhausted by
an attack.
To deliver the update in a rapid and reliable manner, only the
patches for CVE IDs listed above were applied, and not the entire
set of patches for OpenSSH 3.7.1. Thus, the OpenSSH version in
Mac OS X 10.2.8, as obtained via the "ssh -V" command, is:
OpenSSH_3.4p1+CAN-2003-0693, SSH protocols 1.5/2.0, OpenSSL
0x0090609f
Sendmail: Addresses CVE CAN-2003-0694 and CAN-2003-0681 to fix a
buffer overflow in address parsing, as well as a potential buffer
overflow in ruleset parsing.
fb_realpath(): Fixes CAN-2003-0466 which is an off-by-one error in
the fb_realpath() function that may allow attackers to execute
arbitrary code.
arplookup(): Fixes CAN-2003-0804. The arplookup() function caches
ARP requests for routes on a local link. On a local subnet only,
it is possible for an attacker to send a sufficient number of
spoofed ARP requests which will exhaust kernel memory, leading to
a denial of service.
Mac OS X 10.2.8 may be obtained from:
* Software Update pane in System Preferences
* Apple's Software Downloads web site:
Mac OS X Client (updating from 10.2 - 10.2.5):
http://www.info.apple.com/kbnum/n120244
The download file is named: "MacOSXUpdateCombo10.2.8.dmg"
Its SHA-1 digest is: 47c4e354516d7d577c57389207e4207f2b9b2ea2
Mac OS X Client (updating from 10.2.6 - 10.2.7):
http://www.info.apple.com/kbnum/n120245
The download file is named: "MacOSXUpdate10.2.8.dmg"
Its SHA-1 digest is: 2fd24114274f9a1c59b2eb492301a90234215c73
Mac OS X Server (updating from 10.2 - 10.2.5):
http://www.info.apple.com/kbnum/n120246
The download file is named: "MacOSXSrvrUpdCombo10.2.8.dmg"
Its SHA-1 digest is: d87b3e7bd5668046f22b551ccf9bb75a4139e653
Mac OS X Server (updating from 10.2.6 - 10.2.7):
http://www.info.apple.com/kbnum/n120247
The download file is named: "MacOSXServerUpdate10.2.8.dmg"
Its SHA-1 digest is: 74ce19ab7488a41328bee2ba7156489f997abe7c
Information will also be posted to the Apple Product Security web
site:
http://www.apple.com/support/security/security_updates.html
This message is signed with Apple's Product Security PGP key, and
details are available at:
http://www.apple.com/support/security/security_pgp.html
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