#VU56030 Integer overflow in BlackBerry products - CVE-2021-22156

Vulnerability identifier: #VU56030

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-22156

CWE-ID: CWE-190

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
BlackBerry QNX SDP
Universal components / Libraries / Software for developers
QNX OS for Medical
Universal components / Libraries / Software for developers
QNX OS for Safety
Universal components / Libraries / Software for developers

Vendor: BlackBerry

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow in the "calloc()" function in the C runtime library. A remote attacker can pass specially crafted data to the application, trigger integer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

BlackBerry QNX SDP: 6.5.0SP1

QNX OS for Medical: 1.1

QNX OS for Safety: 1.0.1

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External links
https://support.blackberry.com/kb/articleDetail?articleNumber=000082334
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-qnx-TOxjVPdL

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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.