Observable discrepancy in IBM Security Verify Governance

1) Observable discrepancy

EUVDB-ID: #VU81287

Risk: Low

CVSSv4.0: 0.4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-31403

CWE-ID: CWE-203 - Observable discrepancy

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to non-constant-time comparison of CSRF tokens in UIDL request handler. A local user can guess a security token for Fusion endpoints and then use this information to launch further attacks against the affected system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Security Verify Governance: before 10.0.1.0.4

CPE2.3

• cpe:2.3:a:ibm_corporation:ibm_security_verify_governance:*:*:*:*:*:*:*:*

External links

https://www.ibm.com/support/pages/node/6956289

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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