I. Background
BIND 9 is an implementation of the Domain Name System (DNS) protocols.
The named(8) daemon is an Internet Domain Name Server.
DNS Security Extensions (DNSSEC) provides data integrity, origin
authentication and authenticated denial of existence to resolvers.
II. Problem Description
Very large RRSIG RRsets included in a negative response can trigger
I. Background
BIND 9 is an implementation of the Domain Name System (DNS) protocols.
The named(8) daemon is an Internet Domain Name Server.
DNS Security Extensions (DNSSEC) provides data integrity, origin
authentication and authenticated denial of existence to resolvers.
II. Problem Description
If a client requests DNSSEC records with the Checking Disabled (CD) flag
Background
==========
Net-SNMP is a collection of tools for generating and retrieving SNMP
data. The SNMPv3 protocol uses a keyed-Hash Message Authentication Code
(HMAC) to verify data integrity and authenticity of SNMP messages.
Affected packages
=================
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A remote attacker could exploit these vulnerabilities in Python
applications or daemons that pass user-controlled input to vulnerable
functions. Exploitation might lead to the execution of arbitrary code
or a Denial of Service. Vulnerabilities within the hashlib might lead
to weakened cryptographic protection of data integrity or authenticity.
Workaround
==========
There is no known workaround at this time.
