CVE-2011-4079
Off-by-one error in the UTF8StringNormalize function in OpenLDAP 2.4.26 and earlier allows remote...
CVE-2011-4079 is a medium vulnerability (CVSS 4.0) in Openldap, published October 27, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.27%, the 88th percentile. Fixed in openldap 2.4.28-1.
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2011-4079- CVSS 2.0
- 4.0 Medium
AV:N/AC:L/Au:S/C:N/I:N/A:P - Weakness
- CWE-189
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2011-4079- Updated
- 2026-11-02
EUVDEUVD-2011-4030 No score
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.
- Record
EUVD-2011-4030- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-9v33-989g-pj7q No score
Off-by-one error in the UTF8StringNormalize function in OpenLDAP 2.4.26 and earlier allows remote...
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.
- Record
GHSA-9v33-989g-pj7q- Updated
- 2026-11-02
OSV No score
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.
- Record
CVE-2011-4079- Updated
- 2026-11-02
OSVDEBIAN-CVE-2011-4079 No score
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.
- Record
DEBIAN-CVE-2011-4079- Updated
- 2026-11-02
Affected products
Affected packages
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, GitHub Advisories, NVD, OSV |
References
security.gentoo.org/glsa/glsa-201406-36.xml
openwall.com/lists/oss-security/2011/10/26/5
openldap.org/its/index.cgi/Software%20Bugs?id=7059%3Bselectid=7059
bugzilla.redhat.com/show_bug.cgi?id=749324
ubuntu.com/usn/USN-1266-1
secunia.com/advisories/46599
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securityfocus.com/bid/50384
exchange.xforce.ibmcloud.com/vulnerabilities/70991
nvd.nist.gov/vuln/detail/CVE-2011-4079
github.com/advisories/GHSA-9v33-989g-pj7q
security-tracker.debian.org/tracker/CVE-2011-4079