CVE-2018-9843 Deserialization in n/a

Critical 9.8 Published Updated

Remote attackers can execute arbitrary code by sending a malicious serialized .NET object in the Authorization header of the REST API.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2018-9843?

CVE-2018-9843 is a critical unsafe deserialization vulnerability in n/a, published on 12 Apr 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The REST API in CyberArk Password Vault Web Access before 9.9.5 and 10.x before 10.1 allows remote attackers to execute arbitrary code via a serialized .NET object in an Authorization HTTP header.

Weakness: CWE-502

Which versions are affected by CVE-2018-9843?

It affects 1 product.

Products include Cyberark Password Vault.

How do I fix CVE-2018-9843?

No fix has been published for CVE-2018-9843 yet. Limit exposure of the affected software until one is available.

Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.

Is CVE-2018-9843 being exploited?

There is no known exploitation of CVE-2018-9843 in the wild and no public exploit code.

Public exploit code: 1 Exploit-DB entry.

Sources

Also known as GHSA-897c-mv4m-8fjj.

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