Denial of service in 389 Directory Server



| Updated: 2019-08-13
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-3883
CWE-ID CWE-399
Exploitation vector Network
Public exploit N/A
Vulnerable software
 389-ds-base
Server applications / Directory software, identity management

Vendor 389 Directory Server Project

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Resource management error

EUVDB-ID: #VU20063

Risk: Low

CVSSv4.0: 4.9 [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]

CVE-ID: CVE-2019-3883

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

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

The vulnerability exists due to incorrect processing of tome outs for SSL/TLS connections. A remote authenticated user initiate a large number of SSL/TLS connections and consume all available workers, which will lead to a denial of service attack. 



Mitigation

Install updates from vendor's website.

Vulnerable software versions

389-ds-base: 1.4.1.1

CPE2.3 External links

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3883
https://lists.debian.org/debian-lts-announce/2019/05/msg00008.html
https://pagure.io/389-ds-base/issue/50329
https://pagure.io/389-ds-base/pull-request/50331


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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



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