SB2017053105 - Denial of service in OpenLDAP

Description

This security bulletin contains information about 1 vulnerability.

1) Double free error (CVE-ID: CVE-2017-9287)

CWE-ID: CWE-415 - Double Free

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote authenticated attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a double free error within servers/slapd/back-mdb/search.c when processing search requests, which include the Paged Results control with a page size of 0. A remote authenticated attacker can issue a directory search and crash the slapd daemon.

Successful exploitation of the vulnerability may allow a remote authenticated attacker to perform a denial of service (DoS) attack.

Remediation

Install update from vendor's website.

References

• http://www.openldap.org/its/?findid=8655
• https://www.openldap.org/devel/gitweb.cgi?p=openldap.git;a=commit;h=0cee1ffb6021b1aae3fcc9581699da1c85a6dd6e
• https://www.openldap.org/software/release/changes.html