Moritz Muehlenhoff
2010-Aug-25 19:50 UTC
[Secure-testing-team] Bug#594412: CouchDB insecure library loading
Package: couchdb
Severity: grave
Tags: security
The following was posted to oss-security:
Date: Wed, 25 Aug 2010 14:52:52 -0400
From: Dan Rosenberg <dan.j.rosenberg at gmail.com>
Subject: [oss-security] CVE request: CouchDB insecure library loading
(Debian/Ubuntu only)
I discovered that the /usr/bin/couchdb script on Debian/Ubuntu sets an
insecure LD_LIBRARY_PATH environment variable, such that libraries
from the current directory are loaded. If a local attacker placed a
maliciously crafted shared library in a directory and an administrator
were tricked into launching CouchDB from this directory, arbitrary
code execution could be achieved. This vulnerability is only
triggered when the /usr/bin/couchdb script is executed explicitly,
since the init script (/etc/init.d/couchdb) changes the current
directory before launching CouchDB.
The vulnerability was introduced by Debian patch
"mozjs1.9_ldlibpath.patch" on 3/24/2009.
Cheers,
Moritz
-- System Information:
Debian Release: squeeze/sid
APT prefers unstable
APT policy: (500, ''unstable'')
Architecture: i386 (i686)
Kernel: Linux 2.6.32-5-686 (SMP w/1 CPU core)
Locale: LANG=C, LC_CTYPE=de_DE.ISO-8859-15 at euro (charmap=ISO-8859-15)
Shell: /bin/sh linked to /bin/bash
Versions of packages couchdb depends on:
ii adduser 3.112 add and remove users and groups
pn erlang-abi-11.b.3 <none> (no description available)
pn erlang-nox <none> (no description available)
ii libc6 2.11.2-2 Embedded GNU C Library: Shared lib
pn libicu38 <none> (no description available)
pn libmozjs1d <none> (no description available)
ii lsb-base 3.2-23.1 Linux Standard Base 3.2 init scrip
ii mime-support 3.48-1 MIME files
''mime.types'' & ''mailcap
couchdb recommends no packages.
couchdb suggests no packages.