Denial of service in IBM API Connect



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-27919
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
 IBM API Connect
Client/Desktop applications / Office applications

Vendor IBM Corporation

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Input validation error

EUVDB-ID: #VU51485

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-27919

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 in the Reader.Open API when use a ZIP archive containing files start with “../”. A remote attacker can trick a victim to open a specially crafted ZIP archive and perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM API Connect: 10.0.0 - 2018.4.1.16

CPE2.3 External links

https://www.ibm.com/blogs/psirt/security-bulletin-ibm-api-connect-is-impacted-by-a-vulnerability-in-golang-cve-2021-27919/
https://www.ibm.com/support/pages/node/6481891


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open a file.

Is there known malware, which exploits this vulnerability?

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



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