Denial of service in 389 Directory Server
| 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 Subscribe |
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
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-3883
CWE-ID:
CWE-399 - Resource Management Errors
Exploit availability: No
DescriptionThe 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 versions389-ds-base: 1.4.1.1
External linkshttp://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3883
http://lists.debian.org/debian-lts-announce/2019/05/msg00008.html
http://pagure.io/389-ds-base/issue/50329
http://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.
