#VU23003 Untrusted Pointer Dereference in 389-ds-base - CVE-2017-2668

Vulnerability identifier: #VU23003

Vulnerability risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2017-2668

CWE-ID: CWE-822

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
389-ds-base
Server applications / Directory software, identity management

Vendor: 389 Directory Server Project

Description

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

The vulnerability exists due to invalid pointer dereference when processing LDAP bind requests in ns-slapd within 389-ds-base. A remote attacker can send a specially crafted LDAP request and perform a denial of service attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

389-ds-base: 1.3.5.1 - 1.3.5.16, 1.3.6.1 - 1.3.6.9

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External links
https://access.redhat.com/errata/RHSA-2017:0893
https://access.redhat.com/errata/RHSA-2017:0920
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2668
https://pagure.io/389-ds-base/issue/49220

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.