CVE-2024-57854: Net::NSCA::Client versions through 0.009002 for Perl uses a poor random number generator

Severity: critical (CVSS 9.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-03-05 · updated 2026-06-17
Weakness: CWE-338

Description

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.

Affected products

DOUGDUDE Net::Nsca::Client: through 0.009002

References

https://metacpan.org/release/DOUGDUDE/Net-NSCA-Client-0.009002/source/lib/Net/NSCA/Client/InitialPacket.pm#L119
https://patch-diff.githubusercontent.com/raw/dougwilson/perl5-net-nsca-client/pull/2.patch
http://www.openwall.com/lists/oss-security/2026/03/05/1

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