Openwall GNU/*/Linux - a small security-enhanced Linux distro for servers
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Wed, 18 Nov 2015 10:59:03 -0500 (EST)
From: cve-assign@...re.org
To: amilburn@...l.org
Cc: cve-assign@...re.org, oss-security@...ts.openwall.com, Todd.Miller@...rtesan.com
Subject: Re: race condition checking digests/checksums in sudoers

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

>> http://www.sudo.ws/man/1.8.15/sudoers.man.html

>> If a command name is prefixed with a Digest_Spec, the command will
>> only match successfully if it can be verified using the specified
>> SHA-2 digest. This may be useful in situations where the user invoking
>> sudo has write access to the command or its parent directory.

> This results in a race condition if the digest functionality is used
> as suggested (in fact, the rules are matched before the user is
> prompted for a password, so you have quite some time to replace the
> binary from underneath sudo).

Use CVE-2015-8239.

- -- 
CVE assignment team, MITRE CVE Numbering Authority
M/S M300
202 Burlington Road, Bedford, MA 01730 USA
[ PGP key available through http://cve.mitre.org/cve/request_id.html ]
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
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=l+r1
-----END PGP SIGNATURE-----

Powered by blists - more mailing lists

Your e-mail address:

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.