Gentoo Full Text Bug Listing

Description:

Opened: 2007-01-25 01:43 0000

From:     Mark_Andrews@isc.org
        Subject:        Internet Systems Consortium Security Advisory.
        Date:   January 24, 2007 7:23:26 PM EST
        To:       bind-announce@isc.org


                Internet Systems Consortium Security Advisory.
                   BIND 9: dereferencing freed fetch context
                             12 January 2007

Versions affected:

        BIND 9.3.0, 9.3.1, 9.3.2, 9.3.3
        BIND 9.4.0a1, 9.4.0a2, 9.4.0a3, 9.4.0a4, 9.4.0a5, 9.4.0a6, 9.4.0b1
             9.4.0b2, 9.4.0b3, 9.4.0b4, 9.4.0rc1 
        BIND 9.5.0a1 (Bind Forum only)

Severity: Low
Exploitable: Remotely

Description:

        It is possible for the named to dereference (read) a freed
        fetch context.  This can cause named to exit unintentionally.

Workaround:

        Disable / restrict recursion (to limit exposure).

Fix:

        Upgrade to BIND 9.2.8, BIND 9.3.4 or BIND 9.4.0rc2.
        Additionally this will be fixed in the upcoming BIND 9.5.0a2.

Revision History:

------- Comment #1 From Matthias Geerdsen 2007-01-26 14:11:38 0000 -------

pls provide updated ebuilds

this has been fixed in 9.3.4 and 9.2.8

------- Comment #3 From Martin Jackson (RETIRED) 2007-02-06 03:07:16 0000 -------

bind and bind/tools 9.2.8, 9.3.4 and 9.4.0_rc2 have been committed to the tree.

------- Comment #4 From Raphael Marichez 2007-02-06 12:50:10 0000 -------

(In reply to comment #3)
> bind and bind/tools 9.2.8, 9.3.4 and 9.4.0_rc2 have been committed to the tree.
> 

Thanks Martin.

Hi arches, please test and mark stable when appropriate, thanks.

Target keywords are bind-9.2.8 and bind-9.3.4

------- Comment #5 From Gustavo Zacarias (RETIRED) 2007-02-06 13:12:17 0000 -------

9.3.4 wants idnkit but idnkit blocks <9.4...
coffee someone?

------- Comment #6 From Gustavo Zacarias (RETIRED) 2007-02-06 13:15:03 0000 -------

Oh btw, same for 9.2.8.

------- Comment #7 From Konstantin Arkhipov 2007-02-06 16:31:30 0000 -------

my fault, wrong idnkit's block fixed.

------- Comment #10 From Konstantin Arkhipov 2007-02-07 13:21:21 0000 -------

bind-tools must be in sync with bind. i.e. stabilize 'em too, please.

------- Comment #11 From Gustavo Zacarias (RETIRED) 2007-02-07 13:27:53 0000 -------

sparc stable.

------- Comment #13 From Gustavo Zacarias (RETIRED) 2007-02-07 13:57:09 0000 -------

ohhh someone's not gonna like me... 9.3.4 it still breaks on hardened-x86:

grsec: From xxx.xxx.xxx.xxx: signal 6 sent to /usr/sbin/named[named:11336]
uid/euid:40/40 gid/egid:40/40, parent /sbin/init[init:1] uid/euid:0/0
gid/egid:0/0 by /usr/sbin/named[named:852] uid/euid:40/40 gid/egid:40/40,
parent /sbin/init[init:1] uid/euid:0/0 gid/egid:0/0

------- Comment #14 From Jeroen Roovers 2007-02-07 15:03:14 0000 -------

net-dns/bind-tools-9.3.4 marked stable for HPPA.

------- Comment #15 From Shawn Haggett 2007-02-08 02:59:24 0000 -------

(In reply to comment #13)
> ohhh someone's not gonna like me... 9.3.4 it still breaks on hardened-x86:
> 
> grsec: From xxx.xxx.xxx.xxx: signal 6 sent to /usr/sbin/named[named:11336]
> uid/euid:40/40 gid/egid:40/40, parent /sbin/init[init:1] uid/euid:0/0
> gid/egid:0/0 by /usr/sbin/named[named:852] uid/euid:40/40 gid/egid:40/40,
> parent /sbin/init[init:1] uid/euid:0/0 gid/egid:0/0
> 
Same behavior here on hardened-x86:
grsec: From XXX.XXX.XXX.XXX: signal 6 sent to /usr/sbin/named[named:22469]
uid/euid:40/40 gid/egid:40/40, parent /sbin/init[init:1] uid/euid:0/0
gid/egid:0/0 by /usr/sbin/named[named:10807] uid/euid:40/40 gid/egid:40/40,
parent /sbin/init[init:1] uid/euid:0/0 gid/egid:0/0

Will happen within a few seconds of named reporting in the logs that is has
finished starting up and is running.

------- Comment #16 From Martin Jackson (RETIRED) 2007-02-08 03:12:57 0000 -------

I suggest we mask bind for hardened arches only.  Is named the only program
that reports a problem?  (i.e. do we need to mask bind-tools too or just bind)?

------- Comment #18 From Jose Luis Rivero (yoswink) 2007-02-10 20:17:16 0000 -------

alpha stable

------- Comment #19 From Raphael Marichez 2007-02-10 21:13:14 0000 -------

*** Bug 163691 has been marked as a duplicate of this bug. ***

------- Comment #22 From Raphael Marichez 2007-02-13 10:32:51 0000 -------

It's an old and well-known bind issue. I vote Yes for a GLSA.

------- Comment #23 From Tavis Ormandy (RETIRED) 2007-02-13 11:16:14 0000 -------

also vote YES.

------- Comment #24 From Bryan Østergaard (RETIRED) 2007-02-14 15:59:39 0000 -------

IA64 done.

------- Comment #25 From Raphael Marichez 2007-02-16 09:06:58 0000 -------

let's have a GLSA then

------- Comment #26 From FieldySnuts 2007-02-17 22:59:51 0000 -------

I'm hearing from a few people about problems on hardened on amd64 and x86, also
mentioned in comment #15 and comment #16 , fyi.

------- Comment #27 From FieldySnuts 2007-02-17 23:05:22 0000 -------

In addition, this bug is related (I found that out after i posted last comment,
appologies for spam) bug #158664

------- Comment #28 From Raphael Marichez 2007-02-18 00:27:09 0000 -------

GLSA 200702-06, see bug 158664 for hardened-related issues

Bug#: 163692	Product: Gentoo Security	Version: unspecified	Platform: All
OS/Version: Linux	Status: RESOLVED	Severity: normal	Priority: P2
Resolution: FIXED	Assigned To: security@gentoo.org	Reported By: rajiv@gentoo.org
Component: Vulnerabilities
URL:
Summary: net-dns/bind: DNSSEC error and dereferencing freed fetch context (CVE-2007-049[34])
Keywords:
Status Whiteboard: A/B3 [glsa]
Opened: 2007-01-25 01:43 0000