Incorrect Regular Expression in IBM Edge Application Manager



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-23362
CWE-ID CWE-185
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 IBM Edge Application Manager
Client/Desktop applications / Software for system administration

Vendor IBM Corporation

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Incorrect Regular Expression

EUVDB-ID: #VU61255

Risk: Medium

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2021-23362

CWE-ID: CWE-185 - Incorrect Regular Expression

Exploit availability: No

Description

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

The vulnerability exists due to insufficient input validation when processing regular expression "shortcutMatch" in the "fromUrl" function. A remote attacker can pass specially crafted data to the application and perform regular expression denial of service (ReDos) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Edge Application Manager: 4.3 - 4.4

CPE2.3 External links

https://www.ibm.com/support/pages/node/6991609


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. However, proof of concept for this vulnerability is available.



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