The deref_parseCtrl function in servers/slapd/overlays/deref.c in OpenLDAP 2.4.13 through 2.4.40 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via an empty attribute list in a deref control in a search request.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2015-1545 from the MITRE CVE dictionary dictionary and NIST NVD.
This issue did not affect the versions of openldap as shipped with Red Hat Enterprise Linux 5, 6, and 7 as they did not include support for the deref overlay.
NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.
| Base Score | 5 |
|---|---|
| Base Metrics | AV:N/AC:L/Au:N/C:N/I:N/A:P |
| Access Vector | Network |
| Access Complexity | Low |
| Authentication | None |
| Confidentiality Impact | None |
| Integrity Impact | None |
| Availability Impact | Partial |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Package | State |
|---|---|---|
| Red Hat JBoss EAP 6 | openldap | Not affected |
| Red Hat JBoss EAP 5 | openldap | Not affected |
| Red Hat Enterprise Linux 7 | openldap | Not affected |
| Red Hat Enterprise Linux 6 | openldap | Not affected |
| Red Hat Enterprise Linux 5 | openldap | Not affected |
Vulmon