[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

[SECURITY] [DSA 4909-1] bind9 security update



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

- -------------------------------------------------------------------------
Debian Security Advisory DSA-4909-1                   security@debian.org
https://www.debian.org/security/                     Salvatore Bonaccorso
May 01, 2021                          https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package        : bind9
CVE ID         : CVE-2021-25214 CVE-2021-25215 CVE-2021-25216
Debian Bug     : 987741 987742 987743

Several vulnerabilities were discovered in BIND, a DNS server
implementation.

CVE-2021-25214

    Greg Kuechle discovered that a malformed incoming IXFR transfer
    could trigger an assertion failure in named, resulting in denial
    of service.

CVE-2021-25215

    Siva Kakarla discovered that named could crash when a DNAME record
    placed in the ANSWER section during DNAME chasing turned out to be
    the final answer to a client query.

CVE-2021-25216

    It was discovered that the SPNEGO implementation used by BIND is
    prone to a buffer overflow vulnerability. This update switches to
    use the SPNEGO implementation from the Kerberos libraries.

For the stable distribution (buster), these problems have been fixed in
version 1:9.11.5.P4+dfsg-5.1+deb10u5.

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-----

iQKTBAEBCgB9FiEERkRAmAjBceBVMd3uBUy48xNDz0QFAmCNGqFfFIAAAAAALgAo
aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldDQ2
NDQ0MDk4MDhDMTcxRTA1NTMxRERFRTA1NENCOEYzMTM0M0NGNDQACgkQBUy48xND
z0Ta0w/9G3b5oh/ZF6IpqH+CY1GtMag36Mn/WbxIxf3og/HmVLm9eRu5gcjhJr6o
99JP2FAA6u0yYfGksbL6jruz5W4qj1rELX5d/wTZsBaqfGEwZ9fKvx2NR83doxn6
7msz7++A8t8eaFFpDrsJ+Ig8FvH914u3/4sl7sWTVnXrteyCqXU0q41ElBH3IrG3
6YvNNqEDWkrbkMu050prr5C87sIpJRlz/MFb1r9pGcfcpQMzBgBTLs78YcfmgKhf
qlTuF7gXd+OfQgQn0oToAHHSB7dq8Kt2L3VfE/raVitZY0ziJHiaQtmbaTb2GMlS
DdbrDx3EqaBnBLD72NUruKDNwMUQSgRAHiExcyK6fY/xT/K8BeHR5rH//xkQGMPq
6yAfD7EVl0EzbZxUnnOjHNv0Ab5mpEuMAkI1s0LNB4/5l4uY7r4C4MfoW2wdLy3b
uIPzLH8etill0H1cBMKnTw32ItLUgcRlOXVaZOHJSGNayapvQiN1ql5y6Xb8lrlr
9kE6Y44TbOT6H8OnPdPo6nHPa2sYV3sQK5iZ601BL+B/i5wZzcMFC6O6twRorul0
WxO/SPUJOwAhAISlUcjbdNYdzj2/I3b/Z3ivhNwreuZeBRXHoPogw0ZFNdoxG+I6
w/TObfyRALttsC8lkQjyUukSySiEKqlND1jp7Xl6xOT0XmYzP0E=
=H564
-----END PGP SIGNATURE-----


Reply to: