#VU16702 Stack-based buffer overflow in Trusteer Rapport

Vulnerability identifier: #VU16702

Vulnerability risk: Low

CVSSv4.0: 7.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: N/A

CWE-ID: CWE-121

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Trusteer Rapport
Client/Desktop applications / Antivirus software/Personal firewalls

Vendor: IBM Corporation

Description
The vulnerability allows a local attacker to gain elevated privileges on the target system.

The vulnerability exists due to a signedness bug in validating the user-supplied number of elements provided by the user in the structure passed to the Kernel driver function. A local attacker can perform a call to an struct method exported from the Kernel driver with the IOService 'com_trusteer_rapportke_v2', trigger stack-based buffer overflow and execute arbitrary code in the context of the service daemon.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address the vulnerability.

Vulnerable software versions

Trusteer Rapport: All versions

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External links
https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/kernel-buffer-overflow-in-trusteer-r...
https://www.trustwave.com/en-us/resources/security-resources/security-advisories/?fid=21465

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