mailing list of musl libc
 help / color / mirror / code / Atom feed
From: Matt Johnston <matt@ucc.asn.au>
To: musl@lists.openwall.com
Subject: Re: Security advisory for musl libc - stack-based buffer overflow in ipv6 literal parsing [CVE-2015-1817]
Date: Fri, 17 Apr 2015 21:10:08 +0800	[thread overview]
Message-ID: <20150417131008.GE17615@ucc.gu.uwa.edu.au> (raw)

Hi,

I think Dropbear probably is vulnerable to CVE-2015-1817
post-authentication. TCP forwarding requests will call
getaddrinfo() 
https://secure.ucc.asn.au/hg/dropbear/file/cbd674d63cd4/dbutil.c#l415
(moved to netio.c in head, and PF_UNSPEC has been fixed to
AF_UNSPEC). Pre-authentication should be OK, only
getnameinfo() is called (if that's enabled).

musl's network-facing DNS code seems a bit precarious with
pointer arithmetic?

Please CC replies, I'm not subscribed.

Cheers,
Matt



             reply	other threads:[~2015-04-17 13:10 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-04-17 13:10 Matt Johnston [this message]
2015-04-17 17:23 ` Rich Felker
2015-04-17 18:03   ` Rich Felker
2015-04-17 18:09     ` Solar Designer
2015-04-18 13:32       ` Matt Johnston
2015-04-18 15:25         ` Rich Felker
2015-04-18 15:49           ` Harald Becker
2015-04-18 15:58             ` Rich Felker
2015-04-18 16:27               ` Harald Becker
2015-04-18 16:37                 ` Rich Felker
2015-04-18 17:07                   ` Harald Becker
2015-04-18 18:27                     ` Laurent Bercot
2015-04-18 18:47                       ` Harald Becker
2015-04-18 18:13                   ` Harald Becker
2015-04-18 19:56                     ` Rich Felker
2015-04-18 21:02                       ` Laurent Bercot
2015-04-19  3:44                         ` Rich Felker
2015-04-20 10:17                           ` Harald Becker
2015-04-20 11:20                             ` Kurt H Maier
2015-04-20 11:35                               ` Harald Becker
2015-04-20 11:50                                 ` Harald Becker
2015-04-20 14:14                                 ` Kurt H Maier
2015-04-20 14:21                                   ` Harald Becker
2015-04-18 18:25                   ` Harald Becker
  -- strict thread matches above, loose matches on Subject: below --
2015-03-30  4:01 Rich Felker
2015-03-30  4:33 ` Рысь
2015-03-30  4:41   ` Rich Felker
2015-03-30  5:18     ` Рысь

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20150417131008.GE17615@ucc.gu.uwa.edu.au \
    --to=matt@ucc.asn.au \
    --cc=musl@lists.openwall.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
Code repositories for project(s) associated with this public inbox

	https://git.vuxu.org/mirror/musl/

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).