THREATPORT/VULNERABILITY/CVE-2011-4079
MEDIUM SEVERITY

CVE-2011-4079

Openldap vulnerability

CVSS
4.0
EPSS
3.7%
EPSS pct
89th
Exploited
No known
Off-by-one error in the UTF8StringNormalize function in OpenLDAP 2.4.26 and earlier allows remote attackers to cause a denial of service (slapd crash) via a zero-length string that triggers a heap-based buffer overflow, as demonstrated using an empty postalAddressAttribute value in an LDIF entry.
Affected vendor
Openldap
Affected product
Openldap
CVSS vector
AV:N/AC:L/Au:S/C:N/I:N/A:P
Weakness type (CWE)
Published
2011-10-27

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring single-factor authentication. Successful exploitation leads to partial impact to availability.

Its EPSS score of 3.7% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 89% of all scored CVEs.

Check your external exposure to CVE-2011-4079

  • Confirm whether Openldap Openldap is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2011-4079.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2011-4079

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2011-4079 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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Are you exposed to CVE-2011-4079?

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