Operating System:

[Debian]

Published:

19 February 2021

Protect yourself against future threats.

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

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2021.0612
                           bind9 security update
                             19 February 2021

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           bind9
Publisher:         Debian
Operating System:  Debian GNU/Linux
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Denial of Service               -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-8625  

Reference:         ESB-2021.0610
                   ESB-2021.0611

Original Bulletin: 
   http://www.debian.org/security/2021/dsa-4857

- --------------------------BEGIN INCLUDED TEXT--------------------

- -----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

- - -------------------------------------------------------------------------
Debian Security Advisory DSA-4857-1                   security@debian.org
https://www.debian.org/security/                     Salvatore Bonaccorso
February 18, 2021                     https://www.debian.org/security/faq
- - -------------------------------------------------------------------------

Package        : bind9
CVE ID         : CVE-2020-8625
Debian Bug     : 983004

A buffer overflow vulnerability was discovered in the SPNEGO
implementation affecting the GSSAPI security policy negotiation in BIND,
a DNS server implementation, which could result in denial of service
(daemon crash), or potentially the execution of arbitrary code.

For the stable distribution (buster), this problem has been fixed in
version 1:9.11.5.P4+dfsg-5.1+deb10u3.

We recommend that you upgrade your bind9 packages.

For the detailed security status of bind9 please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/bind9

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
- -----BEGIN PGP SIGNATURE-----
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=Z37X
- -----END PGP SIGNATURE-----

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        https://www.auscert.org.au/bulletins/

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967

iQIVAwUBYC8DZONLKJtyKPYoAQin6Q/+Oy29wJh+DYgOdogSmX4Aq+RMfVJa+1BJ
uG/1kRMaOp0c9p3VAjy2w4F/pQ0jN1stOUNdKGaq4d4JmC5UMNq2cLdvEUHw1OaJ
NLl8KiCcocuCltucQkM8eUT2sGmOmG5kbVLKr7WAvDrhReh23EGqtlZ4rM579Lgv
QQC2HIwC3LwjPRetGjUvI0A8fLkv1rUv8Shu3exDwvAhaIRaJal22FxDCsueSyCR
9LVyswFg46859Glq8Pnikc/vpa0NBPif26XQkF94yPA5QOKh99xvAg9xYoJ7PIvl
2EcyzpaezNVqhCKc7j22eE36ZLlOEZ+yO/Wrr3gTUL8TYYA+heRWMAuiL0WgUd2K
Vplu5pRNnKhK12JAPhf24U4OSz9vUtpciHLrS/GiYGW6tWobUSLZ9tPsngS0/QSK
SJgzNnmNoxSv/ckLyWXgijJG1uHOdJ5XgcscwCKogouPS2YUnxus6XID2m0EpqZU
58yK2fIH2WGysKQJd+6xruReLd/+36tIAu76BJ0684nkR6LJfK2qaflGV4yzJ7Wa
aEM100yy/c8xvQtLUdIJepRrATAGfhhBPOQ3OvdcdZTA84mvssZpNzDWMt+OOfjX
br27zUvweKWmhxN6lIOGYuswfqdVBbCmVVmXDhQNzxgF74u6E/SwOODmXx1HrY7b
w3uGSX1TQVY=
=YPLZ
-----END PGP SIGNATURE-----