Date: Tue, 16 Sep 2003 12:26:29 -0700
From: Immunix Security Team <[email protected]>
To: [email protected], [email protected], [email protected],
Subject: Immunix Secured OS 7+ openssh update
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Immunix Secured OS Security Advisory
Packages updated: openssh
Affected products: Immunix OS 7+
Bugs fixed: CAN-2003-0693
Date: Tue Sep 16 2003
Advisory ID: IMNX-2003-7+-020-01
Author: Seth Arnold <[email protected]>
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Description:
A vulnerability has been reported in OpenSSH that is rumoured to be
remotely exploitable for root privileges, even in the face of privsep.
The bug is in the buffer_append_space() function, which operates on
Buffer structs; these structs have a buffer initialized through
malloc(), so StackGuard is unlikely to have any impact on any
potential exploits.
The vulnerability comes when the fatal() function calls cleanup
handlers that rely on potentially corrupted data. This patch corrects
buffer_append_space() to maintain consistent state.
References: http://www.openssh.com/txt/buffer.advhttp://www.cve.mitre.org/cgi-bin/cvename.cgi?name=3DCAN-2003-0693
Package names and locations:
Precompiled binary packages for Immunix 7+ are available at:
http://download.immunix.org/ImmunixOS/7+/Updates/RPMS/openssh-3.4p1-1_imn=
x_11.i386.rpm
http://download.immunix.org/ImmunixOS/7+/Updates/RPMS/openssh-askpass-3.4=
p1-1_imnx_11.i386.rpm
http://download.immunix.org/ImmunixOS/7+/Updates/RPMS/openssh-clients-3.4=
p1-1_imnx_11.i386.rpm
http://download.immunix.org/ImmunixOS/7+/Updates/RPMS/openssh-server-3.4p=
1-1_imnx_11.i386.rpm
Immunix OS 7+ md5sums:
50e8edbfe40d74b7c6689c08b2aa11de openssh-3.4p1-1_imnx_11.i386.rpm
ac1a6f128c7476530ba081ff4da814f1 openssh-askpass-3.4p1-1_imnx_11.i386.rpm
cac82740907f43ee584370e018ac1b90 openssh-clients-3.4p1-1_imnx_11.i386.rpm
09f2838278b8fd633745998c73d4ef2d openssh-server-3.4p1-1_imnx_11.i386.rpm
GPG verification: =
=20
Our public keys are available at http://download.immunix.org/GPG_KEY
Immunix, Inc., has changed policy with GPG keys. We maintain several
keys now: C53B2B53 for Immunix 7+ package signing, D3BA6C17 for
Immunix 7.3 package signing, and 1B7456DA for general security issues.
NOTE:
Ibiblio is graciously mirroring our updates, so if the links above are
slow, please try:
ftp://ftp.ibiblio.org/pub/Linux/distributions/immunix/
or one of the many mirrors available at:
http://www.ibiblio.org/pub/Linux/MIRRORS.html
ImmunixOS 6.2 is no longer officially supported.
ImmunixOS 7.0 is no longer officially supported.
Contact information:
To report vulnerabilities, please contact [email protected].
Immunix attempts to conform to the RFP vulnerability disclosure protocol
http://www.wiretrip.net/rfp/policy.html.
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