Denial of service in IBM DataPower Gateway



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-23840
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
 IBM DataPower Gateway
Client/Desktop applications / Software for system administration

Vendor IBM Corporation

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Input validation error

EUVDB-ID: #VU50745

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-2021-23840

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to insufficient validation of user-supplied input during EVP_CipherUpdate, EVP_EncryptUpdate and EVP_DecryptUpdate calls. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM DataPower Gateway: 2018.4.1.0 - 2018.4.1.16

CPE2.3 External links

http://www.ibm.com/blogs/psirt/security-bulletin-ibm-datapower-gateway-vulnerable-to-a-dos/
http://www.ibm.com/support/pages/node/6481677


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.



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