#VU15561 Improper input validation in 389-ds-base - CVE-2018-14624

Vulnerability identifier: #VU15561

Vulnerability risk: Low

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-14624

CWE-ID: CWE-20

Exploitation vector: 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 cause DoS condition on the target system.

The weakness exists due to incorrect use of the lock controlling error log when re-opening the log file in log__error_emergency(. A remote attacker can send a flood of modifications to a very large DN and cause the slapd to crash.

Mitigation
Install update from vendor's website.i

Vulnerable software versions

389-ds-base: 1.3.7 - 1.3.7.10, 1.3.8 - 1.3.8.8, 1.4.0 - 1.4.0.16

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External links
https://pagure.io/389-ds-base/issue/49937

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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