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.
2011-10-27T20:55:01.823
2025-04-11T00:51:21.963
Deferred
CVSSv2: 4.0 (MEDIUM)
AV:N/AC:L/Au:S/C:N/I:N/A:P
8.0
2.9
Type | Vendor | Product | Version/Range | Vulnerable? |
---|---|---|---|---|
Application | openldap | openldap | ≤ 2.4.26 | Yes |
Application | openldap | openldap | 1.0 | Yes |
Application | openldap | openldap | 1.0.1 | Yes |
Application | openldap | openldap | 1.0.2 | Yes |
Application | openldap | openldap | 1.0.3 | Yes |
Application | openldap | openldap | 1.1 | Yes |
Application | openldap | openldap | 1.1.0 | Yes |
Application | openldap | openldap | 1.1.1 | Yes |
Application | openldap | openldap | 1.1.2 | Yes |
Application | openldap | openldap | 1.1.3 | Yes |
Application | openldap | openldap | 1.1.4 | Yes |
Application | openldap | openldap | 1.2 | Yes |
Application | openldap | openldap | 1.2.0 | Yes |
Application | openldap | openldap | 1.2.1 | Yes |
Application | openldap | openldap | 1.2.2 | Yes |
Application | openldap | openldap | 1.2.3 | Yes |
Application | openldap | openldap | 1.2.4 | Yes |
Application | openldap | openldap | 1.2.5 | Yes |
Application | openldap | openldap | 1.2.6 | Yes |
Application | openldap | openldap | 1.2.7 | Yes |
Application | openldap | openldap | 1.2.8 | Yes |
Application | openldap | openldap | 1.2.9 | Yes |
Application | openldap | openldap | 1.2.10 | Yes |
Application | openldap | openldap | 1.2.11 | Yes |
Application | openldap | openldap | 1.2.12 | Yes |
Application | openldap | openldap | 1.2.13 | Yes |
Application | openldap | openldap | 2.0 | Yes |
Application | openldap | openldap | 2.0.0 | Yes |
Application | openldap | openldap | 2.0.1 | Yes |
Application | openldap | openldap | 2.0.2 | Yes |
Application | openldap | openldap | 2.0.3 | Yes |
Application | openldap | openldap | 2.0.4 | Yes |
Application | openldap | openldap | 2.0.5 | Yes |
Application | openldap | openldap | 2.0.6 | Yes |
Application | openldap | openldap | 2.0.7 | Yes |
Application | openldap | openldap | 2.0.8 | Yes |
Application | openldap | openldap | 2.0.9 | Yes |
Application | openldap | openldap | 2.0.10 | Yes |
Application | openldap | openldap | 2.0.11 | Yes |
Application | openldap | openldap | 2.0.11_9 | Yes |
Application | openldap | openldap | 2.0.11_11 | Yes |
Application | openldap | openldap | 2.0.11_11s | Yes |
Application | openldap | openldap | 2.0.12 | Yes |
Application | openldap | openldap | 2.0.13 | Yes |
Application | openldap | openldap | 2.0.14 | Yes |
Application | openldap | openldap | 2.0.15 | Yes |
Application | openldap | openldap | 2.0.16 | Yes |
Application | openldap | openldap | 2.0.17 | Yes |
Application | openldap | openldap | 2.0.18 | Yes |
Application | openldap | openldap | 2.0.19 | Yes |
Application | openldap | openldap | 2.0.20 | Yes |
Application | openldap | openldap | 2.0.21 | Yes |
Application | openldap | openldap | 2.0.22 | Yes |
Application | openldap | openldap | 2.0.23 | Yes |
Application | openldap | openldap | 2.0.24 | Yes |
Application | openldap | openldap | 2.0.25 | Yes |
Application | openldap | openldap | 2.0.26 | Yes |
Application | openldap | openldap | 2.0.27 | Yes |
Application | openldap | openldap | 2.1.2 | Yes |
Application | openldap | openldap | 2.1.3 | Yes |
Application | openldap | openldap | 2.1.4 | Yes |
Application | openldap | openldap | 2.1.5 | Yes |
Application | openldap | openldap | 2.1.6 | Yes |
Application | openldap | openldap | 2.1.7 | Yes |
Application | openldap | openldap | 2.1.8 | Yes |
Application | openldap | openldap | 2.1.9 | Yes |
Application | openldap | openldap | 2.1.10 | Yes |
Application | openldap | openldap | 2.1.11 | Yes |
Application | openldap | openldap | 2.1.12 | Yes |
Application | openldap | openldap | 2.1.13 | Yes |
Application | openldap | openldap | 2.1.14 | Yes |
Application | openldap | openldap | 2.1.15 | Yes |
Application | openldap | openldap | 2.1.16 | Yes |
Application | openldap | openldap | 2.1.17 | Yes |
Application | openldap | openldap | 2.1.18 | Yes |
Application | openldap | openldap | 2.1.19 | Yes |
Application | openldap | openldap | 2.1.20 | Yes |
Application | openldap | openldap | 2.1.21 | Yes |
Application | openldap | openldap | 2.1.22 | Yes |
Application | openldap | openldap | 2.1.23 | Yes |
Application | openldap | openldap | 2.1.24 | Yes |
Application | openldap | openldap | 2.1.25 | Yes |
Application | openldap | openldap | 2.1.26 | Yes |
Application | openldap | openldap | 2.1.27 | Yes |
Application | openldap | openldap | 2.1.28 | Yes |
Application | openldap | openldap | 2.1.29 | Yes |
Application | openldap | openldap | 2.1.30 | Yes |
Application | openldap | openldap | 2.1_.20 | Yes |
Application | openldap | openldap | 2.2.0 | Yes |
Application | openldap | openldap | 2.2.1 | Yes |
Application | openldap | openldap | 2.2.4 | Yes |
Application | openldap | openldap | 2.2.5 | Yes |
Application | openldap | openldap | 2.2.6 | Yes |
Application | openldap | openldap | 2.2.7 | Yes |
Application | openldap | openldap | 2.2.8 | Yes |
Application | openldap | openldap | 2.2.9 | Yes |
Application | openldap | openldap | 2.2.10 | Yes |
Application | openldap | openldap | 2.2.11 | Yes |
Application | openldap | openldap | 2.2.12 | Yes |
Application | openldap | openldap | 2.2.13 | Yes |
Application | openldap | openldap | 2.2.14 | Yes |
Application | openldap | openldap | 2.2.15 | Yes |
Application | openldap | openldap | 2.2.16 | Yes |
Application | openldap | openldap | 2.2.17 | Yes |
Application | openldap | openldap | 2.2.18 | Yes |
Application | openldap | openldap | 2.2.19 | Yes |
Application | openldap | openldap | 2.2.20 | Yes |
Application | openldap | openldap | 2.2.21 | Yes |
Application | openldap | openldap | 2.2.22 | Yes |
Application | openldap | openldap | 2.2.23 | Yes |
Application | openldap | openldap | 2.2.24 | Yes |
Application | openldap | openldap | 2.2.25 | Yes |
Application | openldap | openldap | 2.2.26 | Yes |
Application | openldap | openldap | 2.2.27 | Yes |
Application | openldap | openldap | 2.3.4 | Yes |
Application | openldap | openldap | 2.3.5 | Yes |
Application | openldap | openldap | 2.3.6 | Yes |
Application | openldap | openldap | 2.3.7 | Yes |
Application | openldap | openldap | 2.3.8 | Yes |
Application | openldap | openldap | 2.3.9 | Yes |
Application | openldap | openldap | 2.3.10 | Yes |
Application | openldap | openldap | 2.3.11 | Yes |
Application | openldap | openldap | 2.3.12 | Yes |
Application | openldap | openldap | 2.3.13 | Yes |
Application | openldap | openldap | 2.3.14 | Yes |
Application | openldap | openldap | 2.3.15 | Yes |
Application | openldap | openldap | 2.3.16 | Yes |
Application | openldap | openldap | 2.3.17 | Yes |
Application | openldap | openldap | 2.3.18 | Yes |
Application | openldap | openldap | 2.3.19 | Yes |
Application | openldap | openldap | 2.3.20 | Yes |
Application | openldap | openldap | 2.3.21 | Yes |
Application | openldap | openldap | 2.3.22 | Yes |
Application | openldap | openldap | 2.3.23 | Yes |
Application | openldap | openldap | 2.3.24 | Yes |
Application | openldap | openldap | 2.3.25 | Yes |
Application | openldap | openldap | 2.3.26 | Yes |
Application | openldap | openldap | 2.3.27 | Yes |
Application | openldap | openldap | 2.3.28 | Yes |
Application | openldap | openldap | 2.3.29 | Yes |
Application | openldap | openldap | 2.3.30 | Yes |
Application | openldap | openldap | 2.3.31 | Yes |
Application | openldap | openldap | 2.3.32 | Yes |
Application | openldap | openldap | 2.3.33 | Yes |
Application | openldap | openldap | 2.3.34 | Yes |
Application | openldap | openldap | 2.3.35 | Yes |
Application | openldap | openldap | 2.3.36 | Yes |
Application | openldap | openldap | 2.3.37 | Yes |
Application | openldap | openldap | 2.3.38 | Yes |
Application | openldap | openldap | 2.3.39 | Yes |
Application | openldap | openldap | 2.3.40 | Yes |
Application | openldap | openldap | 2.3.41 | Yes |
Application | openldap | openldap | 2.3.42 | Yes |
Application | openldap | openldap | 2.3.43 | Yes |
Application | openldap | openldap | 2.4.3 | Yes |
Application | openldap | openldap | 2.4.6 | Yes |
Application | openldap | openldap | 2.4.7 | Yes |
Application | openldap | openldap | 2.4.8 | Yes |
Application | openldap | openldap | 2.4.9 | Yes |
Application | openldap | openldap | 2.4.10 | Yes |
Application | openldap | openldap | 2.4.11 | Yes |
Application | openldap | openldap | 2.4.12 | Yes |
Application | openldap | openldap | 2.4.13 | Yes |
Application | openldap | openldap | 2.4.14 | Yes |
Application | openldap | openldap | 2.4.15 | Yes |
Application | openldap | openldap | 2.4.16 | Yes |
Application | openldap | openldap | 2.4.17 | Yes |
Application | openldap | openldap | 2.4.18 | Yes |
Application | openldap | openldap | 2.4.19 | Yes |
Application | openldap | openldap | 2.4.20 | Yes |
Application | openldap | openldap | 2.4.21 | Yes |
Application | openldap | openldap | 2.4.22 | Yes |
Application | openldap | openldap | 2.4.23 | Yes |
Application | openldap | openldap | 2.4.24 | Yes |
Application | openldap | openldap | 2.4.25 | Yes |