Vulnerability Details : CVE-2021-22156
An integer overflow vulnerability in the calloc() function of the C runtime library of affected versions of BlackBerry® QNX Software Development Platform (SDP) version(s) 6.5.0SP1 and earlier, QNX OS for Medical 1.1 and earlier, and QNX OS for Safety 1.0.1 and earlier that could allow an attacker to potentially perform a denial of service or execute arbitrary code.
Vulnerability category: OverflowExecute codeDenial of service
Products affected by CVE-2021-22156
- cpe:2.3:a:blackberry:qnx_software_development_platform:*:*:*:*:*:*:*:*
- cpe:2.3:a:blackberry:qnx_software_development_platform:6.5.0:sp1:*:*:*:*:*:*
- cpe:2.3:a:blackberry:qnx_software_development_platform:6.5.0:-:*:*:*:*:*:*
- cpe:2.3:o:blackberry:qnx_os_for_medical:*:*:*:*:*:*:*:*
- cpe:2.3:o:blackberry:qnx_os_for_safety:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-22156
0.89%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 73 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-22156
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2021-22156
-
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-22156
-
https://support.blackberry.com/kb/articleDetail?articleNumber=000082334
QNX-2021-001 Vulnerability in the C Runtime Library Impacts BlackBerry QNX Software Development Platform (SDP), QNX OS for Medical, and QNX OS for SafetyPatch;Vendor Advisory
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-qnx-TOxjVPdL
BlackBerry QNX-2021-001 Vulnerability Affecting Cisco Products: August 2021Third Party Advisory
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