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Vulnerabilities/Threats

1 MIN READ

Quick Hits



ADOBE PATCHES CRITICAL DESERIALIZATION VULNERABILITY, BUT EXPLOITS PERSIST

The vulnerability was being exploited in the wild, targeting two versions of
Adobe ColdFusion.
Dark Reading Staff
Dark Reading
August 22, 2023
Source: Elena11 via Shutterstock
PDF


CISA has added a vulnerability — cataloged as CVE-2023-26359 — to the Known
Exploited Vulnerabilities Catalog with a CVSS score of 9.8 due to active
exploitation.



The vulnerability is a deserialization flaw affecting Adobe ColdFusion 2018
(Update 15 and earlier) and Adobe ColdFusion 2021 (Update 5 and earlier) and has
the potential to result in arbitrary code execution.

Serialization turns an object into a data format that can eventually be restored
later, like with JSON and XML and their serialized data. Deserialization is the
reverse of this process where data structured in some format is rebuilt into an
object. When deserialization occurs without validating a trusted source, it can
lead to denial of service or code execution.

These vulnerabilities, which are considered critical and important, and could
lead to memory leaks, were patched in March. It is unclear how the flaw is being
exploited in the wild, but Adobe states that this is only occurring "in very
limited attacks."



Because of this active exploitation, Federal Civilian Executive Branch (FCEB)
agencies have a Sept. 11 deadline to apply these patches and protect against
potential threats. 



Adobe recommends that customers apply the security configuration settings "as
outlined on the ColdFusion Security page as well as review the respective
Lockdown guides." It also recommends "updating your ColdFusion JDK/JRE to the
latest version of the LTS releases for JDK 11." This is because applying the
ColdFusion update without a corresponding JDK update will not allow for a secure
server.

Adobe credits Patrick Vares for reporting the issues related to vulnerability
CVE-2023-26359.

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