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OVAL Definitions
>
OVAL Definition Details
Id
oval:com.altx-soft.nix:def:131583
[Rus]
Version
3
Class
patch
ALTXid
325002
Language
English
Severity
High
Title
DSA-4689-1 -- bind9 -- security update
Description
Several vulnerabilities were discovered in BIND, a DNS server implementation.
Family
unix
Platform
Debian 10
Debian 9
Product
bind9
Reference
VENDOR: DSA-4689-1
VENDOR: DSA-4689-1
Id:
DSA-4689-1
Reference:
https://www.debian.org/security/dsa-4689
CVE: CVE-2019-6477
CVE: CVE-2019-6477
Id:
CVE-2019-6477
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6477
Comment
: With pipelining enabled each incoming query on a TCP connection requires a similar resource allocation to a query received via UDP or via TCP without pipelining enabled. A client using a TCP-pipelined connection to a server could consume more resources than the server has been provisioned to handle. When a TCP connection with a large number of pipelined queries is closed, the load on the server releasing these multiple resources can cause it to become unresponsive, even for queries that can be answered authoritatively or from cache. (This is most likely to be perceived as an intermittent server problem).
CVSSv2 Score:
5
Access vector:
NETWORK
Access complexity:
LOW
Authentication:
NONE
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
PARTIAL
CVSSv2 Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSSv3 Score:
7.5
Attack vector:
NETWORK
Attack complexity:
LOW
Privileges required:
NONE
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE:
400 (Uncontrolled Resource Consumption ('Resource Exhaustion'))
References:
https://kb.isc.org/docs/cve-2019-6477 (CONFIRM)
https://www.synology.com/security/advisory/Synology_SA_19_39 (CONFIRM)
DSA-4689 (DEBIAN)
openSUSE-SU-2020:1699 (SUSE)
openSUSE-SU-2020:1701 (SUSE)
FEDORA-2019-73a8737068 ()
https://support.f5.com/csp/article/K15840535?utm_source=f5support&%3Butm_medium=RSS ()
FEDORA-2019-c703d2304a ()
CVE: CVE-2020-8616
CVE: CVE-2020-8616
Id:
CVE-2020-8616
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8616
Comment
: A malicious actor who intentionally exploits this lack of effective limitation on the number of fetches performed when processing referrals can, through the use of specially crafted referrals, cause a recursing server to issue a very large number of fetches in an attempt to process the referral. This has at least two potential effects: The performance of the recursing server can potentially be degraded by the additional work required to perform these fetches, and The attacker can exploit this behavior to use the recursing server as a reflector in a reflection attack with a high amplification factor.
CVSSv2 Score:
5
Access vector:
NETWORK
Access complexity:
LOW
Authentication:
NONE
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
PARTIAL
CVSSv2 Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSSv3 Score:
8.6
Attack vector:
NETWORK
Attack complexity:
LOW
Privileges required:
NONE
User interaction:
NONE
Scope:
CHANGED
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CWE:
400 (Uncontrolled Resource Consumption ('Resource Exhaustion'))
References:
http://www.nxnsattack.com (MISC)
https://kb.isc.org/docs/cve-2020-8616 (CONFIRM)
[oss-security] 20200519 Two vulnerabilities disclosed in BIND (CVE-2020-8616 and CVE-2020-8617) (MLIST)
DSA-4689 (DEBIAN)
https://security.netapp.com/advisory/ntap-20200522-0002/ (CONFIRM)
USN-4365-2 (UBUNTU)
https://www.synology.com/security/advisory/Synology_SA_20_12 (CONFIRM)
USN-4365-1 (UBUNTU)
[debian-lts-announce] 20200530 [SECURITY] [DLA 2227-1] bind9 security update (MLIST)
openSUSE-SU-2020:1699 (SUSE)
openSUSE-SU-2020:1701 (SUSE)
FEDORA-2020-2d89cbcfd9 ()
FEDORA-2020-f9dcd4e9d5 ()
CVE: CVE-2020-8617
CVE: CVE-2020-8617
Id:
CVE-2020-8617
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8617
Comment
: Using a specially-crafted message, an attacker may potentially cause a BIND server to reach an inconsistent state if the attacker knows (or successfully guesses) the name of a TSIG key used by the server. Since BIND, by default, configures a local session key even on servers whose configuration does not otherwise make use of it, almost all current BIND servers are vulnerable. In releases of BIND dating from March 2018 and after, an assertion check in tsig.c detects this inconsistent state and deliberately exits. Prior to the introduction of the check the server would continue operating in an inconsistent state, with potentially harmful results.
CVSSv2 Score:
4.3
Access vector:
NETWORK
Access complexity:
MEDIUM
Authentication:
NONE
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
PARTIAL
CVSSv2 Vector:
AV:N/AC:M/Au:N/C:N/I:N/A:P
CVSSv3 Score:
5.9
Attack vector:
NETWORK
Attack complexity:
HIGH
Privileges required:
NONE
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE:
617 (Reachable Assertion)
References:
https://kb.isc.org/docs/cve-2020-8617 (CONFIRM)
[oss-security] 20200519 Two vulnerabilities disclosed in BIND (CVE-2020-8616 and CVE-2020-8617) (MLIST)
DSA-4689 (DEBIAN)
https://security.netapp.com/advisory/ntap-20200522-0002/ (CONFIRM)
http://packetstormsecurity.com/files/157836/BIND-TSIG-Denial-Of-Service.html (MISC)
USN-4365-2 (UBUNTU)
USN-4365-1 (UBUNTU)
[debian-lts-announce] 20200530 [SECURITY] [DLA 2227-1] bind9 security update (MLIST)
openSUSE-SU-2020:1699 (SUSE)
openSUSE-SU-2020:1701 (SUSE)
FEDORA-2020-2d89cbcfd9 ()
FEDORA-2020-f9dcd4e9d5 ()
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