#VU59970 LDAP injection in IBM WebSphere Application Server Liberty - CVE-2021-39031

Vulnerability identifier: #VU59970

Vulnerability risk: Medium

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-39031

CWE-ID: CWE-90

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
IBM WebSphere Application Server Liberty
Server applications / Application servers

Vendor: IBM Corporation

Description

The vulnerability allows a remote user to escalate privileges on the system.

The vulnerability exists due to improper input validation when processing DLAP queries. A remote user can send a specially crafted request to modify the original LDAP query and gain unauthorized access to the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

IBM WebSphere Application Server Liberty: 17.0.0.3 - 22.0.0.1

---

External links
https://www.ibm.com/blogs/psirt/security-bulletin-ibm-websphere-application-server-liberty-is-vulnerable-to-ldap-injection-cve-2021-39031/
https://www.ibm.com/support/pages/node/6550488

---

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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