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CISA: BADALLOC VULNERABILITY CAN LEAD TO REMOTE CODE EXECUTION IN BLACKBERRY
PRODUCTS

Usama Jawad Neowin @@UsamaJawad96 · Aug 18, 2021 05:02 EDT with 1 comment

Back in April, Microsoft highlighted a collection of vulnerabilities called
"BadAlloc" affecting Internet of Things (IoT) and Operational Technology (OT)
devices. It stated that the memory vulnerabilities could be used to trigger
remote code execution (RCE) across millions of devices in multiple sectors
including healthcare, industrial, automotive, and enterprise. BlackBerry
disclosed yesterday that many of its products are affected by a BadAlloc
vulnerability and the Department of Homeland Security's (DHS) Cybersecurity and
Infrastructure Agency (CISA) has now issued an advisory on the matter too.



The CVE-2021-22156 BadAlloc vulnerability affects hardware running BlackBerry's
QNX Real Time Operating System (RTOS). You can find the complete list of
products affected by this vulnerability on CISA's advisory here, but it is
important to know that it impacts medical devices, automotive platforms, and the
Neutrino QNX Secure Kernel, among many others.

In a nutshell, the current vulnerability could allow a malicious actor with
network access to attack an affected device that is exposed to the internet. A
sophisticated attacker could gain control over the calloc() function to trigger
an integer overflow, giving them access to other memory locations through which
they could initiate RCE or denial-of-service conditions.

Given the criticality of the BlackBerry products affected by this issue, CISA
has outlined mitigations that should immediately be applied by manufacturers and
end users. The former are required to get in touch with BlackBerry on an urgent
basis to obtain patches whereas the latter are requested to contact
manufacturers for the provisioning of patches, which should be applied
immediately when available. If the patch is not available yet, mitigations
provided by the manufacturers should be implemented. CISA has also cautioned
that in some cases, affected hardware may need to be disconnected from service
and taken to an off-site location for "physical replacement of integrated
memory". It is unknown if this vulnerability is being exploited currently.

TAGS

 * Microsoft
 * Blackberry
 * Cisa
 * Us-cert
 * Security
 * Cybersecurity
 * Badalloc
 * Patch
 * Remote code execution
 * Rce
 * Memory
 * Denial of service
 * Vulnerability

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