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CVE-2011-4079

UnknownEPSS 3.71%

Last modified

CVE-2011-4079 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 3.71% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability
3.71%

88.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
OpenldapOpenldap<= 2.4.26
OpenldapOpenldap1.0
OpenldapOpenldap1.0.1
OpenldapOpenldap1.0.2
OpenldapOpenldap1.0.3
OpenldapOpenldap1.1
OpenldapOpenldap1.1.0
OpenldapOpenldap1.1.1
OpenldapOpenldap1.1.2
OpenldapOpenldap1.1.3
OpenldapOpenldap1.1.4
OpenldapOpenldap1.2
OpenldapOpenldap1.2.0
OpenldapOpenldap1.2.1
OpenldapOpenldap1.2.2
OpenldapOpenldap1.2.3
OpenldapOpenldap1.2.4
OpenldapOpenldap1.2.5
OpenldapOpenldap1.2.6
OpenldapOpenldap1.2.7
OpenldapOpenldap1.2.8
OpenldapOpenldap1.2.9
OpenldapOpenldap1.2.10
OpenldapOpenldap1.2.11
OpenldapOpenldap1.2.12
OpenldapOpenldap1.2.13
OpenldapOpenldap2.0
OpenldapOpenldap2.0.0
OpenldapOpenldap2.0.1
OpenldapOpenldap2.0.2
OpenldapOpenldap2.0.3
OpenldapOpenldap2.0.4
OpenldapOpenldap2.0.5
OpenldapOpenldap2.0.6
OpenldapOpenldap2.0.7
OpenldapOpenldap2.0.8
OpenldapOpenldap2.0.9
OpenldapOpenldap2.0.10
OpenldapOpenldap2.0.11
OpenldapOpenldap2.0.11_9
OpenldapOpenldap2.0.11_11
OpenldapOpenldap2.0.11_11s
OpenldapOpenldap2.0.12
OpenldapOpenldap2.0.13
OpenldapOpenldap2.0.14
OpenldapOpenldap2.0.15
OpenldapOpenldap2.0.16
OpenldapOpenldap2.0.17
OpenldapOpenldap2.0.18
OpenldapOpenldap2.0.19

Showing 50 of 175 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2011-4079?
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.
How severe is CVE-2011-4079?
Severity scoring for CVE-2011-4079 is pending analysis. The EPSS model estimates a 3.71% probability of exploitation in the next 30 days.
How do I fix CVE-2011-4079?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2011-4079?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST