CVE-2009-2409

Gnutls vulnerability

CVSS

5.1

EPSS

4.5%

EPSS pct

91th

Exploited

No known

The Network Security Services (NSS) library before 3.12.3, as used in Firefox; GnuTLS before 2.6.4 and 2.7.4; OpenSSL 0.9.8 through 0.9.8k; and other products support MD2 with X.509 certificates, which might allow remote attackers to spoof certificates by using MD2 design flaws to generate a hash collision in less than brute-force time. NOTE: the scope of this issue is currently limited because the amount of computation required is still large.

Affected vendor

Gnu

Affected product

Gnutls

CVSS vector

AV:N/AC:H/Au:N/C:P/I:P/A:P

Weakness type (CWE)

CWE-295 — Improper Certificate Validation

Published

2009-07-30

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, high attack complexity, requiring no authentication. Successful exploitation leads to partial impact to confidentiality, partial impact to integrity, partial impact to availability.

Its EPSS score of 4.5% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 91% of all scored CVEs.

Check your external exposure to CVE-2009-2409

Confirm whether Gnu Gnutls is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2009-2409.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2009-2409

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2009-2409 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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