Withdrawn by the publisher.

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 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.

Security update for bind

bind: BIND does not sufficiently limit the number of fetches performed when processing referrals bind: A logic error in code which checks TSIG validity can be used to trigger an assertion failure in tsig.c

Security update for bind

Affected: Ubuntu:Pro:14.04:LTS: bind9, Ubuntu:16.04:LTS: bind9, Ubuntu:18.04:LTS: bind9, Ubuntu:20.04:LTS: bind9

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.

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in mehreren DNS Server Produkten ausnutzen, um einen Denial of Service Angriff durchzuführen.