THREATPORT/VULNERABILITY/CVE-2015-2091
MEDIUM SEVERITY

CVE-2015-2091

Mod Gnutls vulnerability

CVSS
5.0
EPSS
3.3%
EPSS pct
87th
Exploited
No known
The authentication hook (mgs_hook_authz) in mod-gnutls 0.5.10 and earlier does not validate client certificates when "GnuTLSClientVerify require" is set, which allows remote attackers to spoof clients via a crafted certificate.
Affected vendor
Apache
Affected product
Mod Gnutls
CVSS vector
AV:N/AC:L/Au:N/C:N/I:P/A:N
Weakness type (CWE)
Published
2015-03-13

Risk analysis

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

Its EPSS score of 3.3% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 87% of all scored CVEs.

Check your external exposure to CVE-2015-2091

  • Confirm whether Apache Mod Gnutls is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2015-2091.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2015-2091

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2015-2091 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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Are you exposed to CVE-2015-2091?

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