WildFly Core update for Apache Mina SSHD

Published: 2021-09-29
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-30129
Exploitation vector Network
Public exploit N/A
Vulnerable software
Wildfly Core
Server applications / Application servers

Vendor Red Hat Inc.

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Buffer overflow

EUVDB-ID: #VU56931

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-30129

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Exploit availability: No


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

The vulnerability exists due to a boundary error in the sshd-core of Apache Mina SSHD. A remote attacker can send specially crafted requests to the server, trigger buffer overflow and perform a denial of service (DoS) attack.


Install update from vendor's website.

Vulnerable software versions

Wildfly Core: 9.0.0, 9.0.1, 9.0.2, 10.0.0, 10.0.2, 10.0.3, 11.0.0, 11.1.0, 11.1.1, 12.0.0, 12.0.1, 12.0.2, 12.0.3, 13.0.0, 13.0.1, 13.0.2, 13.0.3, 14.0.0, 14.0.1, 15.0.0, 15.0.1, 16.0.0, 16.0.1

CPE2.3 External links


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.