Openwall GNU/*/Linux - a small security-enhanced Linux distro for servers
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Sat,  4 Apr 2015 03:27:49 -0400 (EDT)
From: cve-assign@...re.org
To: ljungmark@...io.se
Cc: cve-assign@...re.org, oss-security@...ts.openwall.com
Subject: Re: CVE Request : IPv6 Hop limit lowering via RA messages

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

> An unprivileged user on a local network can use IPv6 Neighbour
> Discovery ICMP to broadcast a non-route with a low hop limit, this
> causing machines to lower the hop limit on existing IPv6 routes.

> Projects impacted:  Linux kernel,  NetworkManager, FreeBSD Kernel

> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6fd99094de2b83d1d4c8457f2c83483b2828e75a

Use CVE-2015-2922 for the Linux kernel vulnerability.


> https://lists.freebsd.org/pipermail/freebsd-net/2015-April/041934.html

Use CVE-2015-2923 for the FreeBSD vulnerability.


> ,  NetworkManager

This might refer to
http://cgit.freedesktop.org/NetworkManager/NetworkManager/tree/src/rdisc/nm-lndp-rdisc.c

  hop_limit = ndp_msgra_curhoplimit (msgra);
  if (rdisc->hop_limit != hop_limit) {
          rdisc->hop_limit = hop_limit;
          changed |= NM_RDISC_CONFIG_HOP_LIMIT;

however, the MITRE CVE team is not directly familiar with this part of
the NetworkManager code and has not researched any changes to the
"rdisc->hop_limit != hop_limit" test. There is apparently no commit
available yet at:

  http://cgit.freedesktop.org/NetworkManager/NetworkManager/log/src/rdisc/nm-lndp-rdisc.c

but, again, we don't know whether changes would need to occur there.

Use CVE-2015-2924 for the NetworkManager vulnerability.


Also, note that

  http://patchwork.ozlabs.org/patch/453995/

refers to affected closed-source products. (CVE IDs for closed-source
products would be announced elsewhere.) It also refers to Android. We
don't know whether Android was listed only because of a
shared-codebase issue, e.g.,

  https://android.googlesource.com/kernel/common/+/android-3.18/net/ipv6/ndisc.c

(there is no commit at
https://android.googlesource.com/kernel/common/+log/android-3.18/net/ipv6/ndisc.c
currently)

or whether Android is affected in other ways. Unless there is
incorrect hop_limit processing in code that is specific to Android,
Android would not have a unique CVE ID.

- -- 
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 v1.4.14 (SunOS)

iQEcBAEBAgAGBQJVH5GoAAoJEKllVAevmvmsL4EH/3oXUCv+ibZ7VXqeLpvkcmeq
R6dPpU6QJVLvirY/2Huoq0eLlSm9l6Tg9Z0h8WoWJpa8nQjrEthXc0XnWh6l4aoW
GzcRAJLjh21WZGTF4euTVMTSyR+ftw2jNp5WkfiI4BxCvikyDlrktj1qYVgsB7AK
3Svrv9jUDDjQX8Xd2gAqCEcSiRe9OO+JWErRD9ZyKSia9KcgFmmw3XQgUgefz6Ra
oKWuc0nZbYKq80JwIiiX8ThRyETuoNOtT4w7JdRVJfhFlUml8+FNh1hFiz52GsBF
iOOninmlM0i1EZw2v8JV/V+ihHB071YbT3K7xdoOu65CZymDy5qq+fc2ok5IOFY=
=qiwd
-----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.