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veracodeVeracode Vulnerability DatabaseVERACODE:23950
HistoryApr 10, 2020 - 12:41 a.m.

Cache Poisoning Attack

2020-04-1000:41:37
Veracode Vulnerability Database
sca.analysiscenter.veracode.com
10

EPSS

0.013

Percentile

85.7%

bind is vulnerable to cache poisoning attacks. The vulnerability exists as a flaw was found in the BIND DNSSEC NSEC/NSEC3 validation code. If BIND was running as a DNSSEC-validating resolver, it could incorrectly cache NXDOMAIN responses, as if they were valid, for records proven by NSEC or NSEC3 to exist. A remote attacker could use this flaw to cause a BIND server to return the bogus, cached NXDOMAIN responses for valid records and prevent users from retrieving those records (denial of service).

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