VULNERABILITY

Oracle Linux: CVE-2020-8616: ELSA-2020-2344: bind security update (IMPORTANT) (Multiple Advisories)

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Oracle Linux: CVE-2020-8616: ELSA-2020-2344: bind security update (IMPORTANT) (Multiple Advisories)

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
05/19/2020
Created
06/05/2020
Added
06/04/2020
Modified
01/07/2025

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. A flaw was found in BIND, where it does not sufficiently limit the number of fetches that can be performed while processing a referral response. This flaw allows an attacker to cause a denial of service attack. The attacker can also exploit this behavior to use the recursing server as a reflector in a reflection attack with a high amplification factor.

Solution(s)

  • oracle-linux-upgrade-bind
  • oracle-linux-upgrade-bind-chroot
  • oracle-linux-upgrade-bind-devel
  • oracle-linux-upgrade-bind-export-devel
  • oracle-linux-upgrade-bind-export-libs
  • oracle-linux-upgrade-bind-libs
  • oracle-linux-upgrade-bind-libs-lite
  • oracle-linux-upgrade-bind-license
  • oracle-linux-upgrade-bind-lite-devel
  • oracle-linux-upgrade-bind-pkcs11
  • oracle-linux-upgrade-bind-pkcs11-devel
  • oracle-linux-upgrade-bind-pkcs11-libs
  • oracle-linux-upgrade-bind-pkcs11-utils
  • oracle-linux-upgrade-bind-sdb
  • oracle-linux-upgrade-bind-sdb-chroot
  • oracle-linux-upgrade-bind-utils
  • oracle-linux-upgrade-python3-bind

References

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