IBM Cloud Private update for Curl libcurl



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-22926
CWE-ID CWE-295
Exploitation vector Network
Public exploit N/A
Vulnerable software
 IBM Cloud Private
Universal components / Libraries / Software for developers

Vendor IBM Corporation

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Improper Certificate Validation

EUVDB-ID: #VU55147

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-22926

CWE-ID: CWE-295 - Improper Certificate Validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to an error in the CURLOPT_SSLCERT option mixup with TLS library Secure Transport. A remote attacker can create a file name with the same name as the app wants to use by name, and thereby trick the application to use the file based cert instead of the one referred to by name making libcurl send the wrong client certificate in the TLS connection handshake.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Cloud Private: before 3.2.1.2203

CPE2.3 External links

https://curl.haxx.se/docs/CVE-2021-22926.html


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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