CVE - CVE-2020-8616

CVE-ID
CVE-2020-8616	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
CONFIRM:https://kb.isc.org/docs/cve-2020-8616 CONFIRM:https://security.netapp.com/advisory/ntap-20200522-0002/ CONFIRM:https://www.synology.com/security/advisory/Synology_SA_20_12 DEBIAN:DSA-4689 URL:https://www.debian.org/security/2020/dsa-4689 FEDORA:FEDORA-2020-2d89cbcfd9 URL:https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WOGCJS2XQ3SQNF4W6GLZ73LWZJ6ZZWZI/ FEDORA:FEDORA-2020-f9dcd4e9d5 URL:https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JKJXVBOKZ36ER3EUCR7VRB7WGHIIMPNJ/ MISC:http://www.nxnsattack.com MLIST:[debian-lts-announce] 20200530 [SECURITY] [DLA 2227-1] bind9 security update URL:https://lists.debian.org/debian-lts-announce/2020/05/msg00031.html MLIST:[oss-security] 20200519 Two vulnerabilities disclosed in BIND (CVE-2020-8616 and CVE-2020-8617) URL:http://www.openwall.com/lists/oss-security/2020/05/19/4 SUSE:openSUSE-SU-2020:1699 URL:http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html SUSE:openSUSE-SU-2020:1701 URL:http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html UBUNTU:USN-4365-1 URL:https://usn.ubuntu.com/4365-1/ UBUNTU:USN-4365-2 URL:https://usn.ubuntu.com/4365-2/
Assigning CNA
Internet Systems Consortium (ISC)
Date Record Created
20200205	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20200205)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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