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OVAL Definitions
>
OVAL Definition Details
Id
oval:com.altx-soft.nix:def:147324
[Rus]
Version
2
Class
patch
ALTXid
348073
Language
English
Severity
High
Title
DLA-2568-1 -- bind9 security update
Description
It was discovered that there was a buffer overflow attack in the bind9 DNS server caused by an issue in the GSSAPI ('Generic Security Services') security policy negotiation.
Family
unix
Platform
Debian 9
Product
bind9
Reference
VENDOR: DLA-2568-1
VENDOR: DLA-2568-1
Id:
DLA-2568-1
Reference:
https://lists.debian.org/debian-lts-announce/2021/debian-lts-announce-202102/msg00029.html
CVE: CVE-2020-8625
CVE: CVE-2020-8625
Id:
CVE-2020-8625
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8625
Comment
: BIND servers are vulnerable if they are running an affected version and are configured to use GSS-TSIG features. In a configuration which uses BIND's default settings the vulnerable code path is not exposed, but a server can be rendered vulnerable by explicitly setting valid values for the tkey-gssapi-keytab or tkey-gssapi-credentialconfiguration options. Although the default configuration is not vulnerable, GSS-TSIG is frequently used in networks where BIND is integrated with Samba, as well as in mixed-server environments that combine BIND servers with Active Directory domain controllers. The most likely outcome of a successful exploitation of the vulnerability is a crash of the named process. However, remote code execution, while unproven, is theoretically possible. Affects: BIND 9.5.0 -> 9.11.27, 9.12.0 -> 9.16.11, and versions BIND 9.11.3-S1 -> 9.11.27-S1 and 9.16.8-S1 -> 9.16.11-S1 of BIND Supported Preview Edition. Also release versions 9.17.0 -> 9.17.1 of the BIND 9.17 development branch
CVSSv2 Score:
6.8
Access vector:
NETWORK
Access complexity:
MEDIUM
Authentication:
NONE
Confidentiality impact:
PARTIAL
Integrity impact:
PARTIAL
Availability impact:
PARTIAL
CVSSv2 Vector:
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSSv3 Score:
8.1
Attack vector:
NETWORK
Attack complexity:
HIGH
Privileges required:
NONE
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
HIGH
Integrity impact:
HIGH
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE:
120 (Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'))
References:
https://kb.isc.org/v1/docs/cve-2020-8625 (CONFIRM)
DSA-4857 (DEBIAN)
[oss-security] 20210218 BIND Operational Notification: Enabling the new BIND option "stale-answer-client-timeout" can result in unexpected server termination (MLIST)
[debian-lts-announce] 20210219 [SECURITY] [DLA 2568-1] bind9 security update (MLIST)
[oss-security] 20210220 BIND Operational Notification: Zone journal (.jnl) file incompatibility,after upgrading to BIND 9.16.12 and 9.17 (MLIST)
https://www.zerodayinitiative.com/advisories/ZDI-21-195/ (MISC)
https://security.netapp.com/advisory/ntap-20210319-0001/ (CONFIRM)
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf (CONFIRM)
FEDORA-2021-0595625865 ()
FEDORA-2021-28f97e232d ()
FEDORA-2021-8b4744f152 ()
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