Openwall GNU/*/Linux - a small security-enhanced Linux distro for servers
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date: Thu,  1 Oct 2015 16:58:51 -0400 (EDT)
From: cve-assign@...re.org
To: julien@....org
Cc: cve-assign@...re.org, oss-security@...ts.openwall.com, keescook@...omium.org
Subject: Re: CVE Request: Unauthorized access to IPC objects with SysV shm

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

> ipc_addid installs new ipc object with idr_alloc, from this point on
> it is accessible to other threads. At this point the object contains
> unitialized garbage. Then it fills in uid, etc:
> 
> new->cuid = new->uid = euid;
> new->gid = new->cgid = egid;
> new->seq = ids->seq++;
> 
> While this happens another thread can get access to the object and do
> uid check on the unitialized garbage, which can give falsely give
> accesses

Use CVE-2015-7613.

- -- 
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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=/fAD
-----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.