Net::NSCA::Client versions through 0.009002 for Perl uses a poor random number generator.
Version v0.003 switched to use Data::Rand::Obscure instead of Crypt::Random for generation of a random initialisation vectors.
Data::Rand::Obscure uses Perl's built-in rand() function, which is not suitable for cryptographic functions.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 3
https://metacpan.org/release/DOUGDUDE/Net-NSCA-Client-0.009002/source/lib/Net/N…
9b29abf9-4ab0-4765-b253-1875cd9b441e
https://patch-diff.githubusercontent.com/raw/dougwilson/perl5-net-nsca-client/p…
9b29abf9-4ab0-4765-b253-1875cd9b441e
http://www.openwall.com/lists/oss-security/2026/03/05/1
af854a3a-2127-422b-91ae-364da2661108