MEDIUM
CVE-2011-4079
CWE-189Published: October 27, 2011· Updated: Jun 16, 2026
4.0
CVSS v3.1
Official 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.
Technical Analysis
CVE-2011-4079 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityNone
IntegrityNone
AvailabilityP
AV:N/AC:L/Au:S/C:N/I:N/A:P
Affected Vendors & Products
openldap1 product(s)
openldap
Source: NVD CPE · 175 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (20)
→
http://secunia.com/advisories/46599Vendor Advisory
→
http://secunia.com/advisories/46599Vendor Advisory
Quick Facts
CVE IDCVE-2011-4079
CVSS Score4.0 / 10
SeverityMEDIUM
WeaknessCWE-189
CISA KEVNo
Affected1 vendor(s)
PublishedOct 27, 2011
Related CVEs (CWE-189)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2011-4079 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.