THREATPORT/VULNERABILITY/CVE-2003-1054
MEDIUM SEVERITY

CVE-2003-1054

Mod Access Referer vulnerability

CVSS
5.0
EPSS
7.1%
EPSS pct
94th
Exploited
No known
mod_access_referer 1.0.2 allows remote attackers to cause a denial of service (crash) via a malformed Referer header that is missing a hostname, as parsed by the ap_parse_uri_components function in Apache, which triggers a null dereference.
Affected vendor
Mod Access Referer
Affected product
Mod Access Referer
CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Published
2003-04-16

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 availability.

Its EPSS score of 7.1% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 94% of all scored CVEs.

Check your external exposure to CVE-2003-1054

  • Confirm whether Mod Access Referer Mod Access Referer is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2003-1054.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2003-1054

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2003-1054 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

Run a free external exposure scan

Are you exposed to CVE-2003-1054?

Run an instant, non-intrusive external scan to check your attack surface for CVE-2003-1054.

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