CVE-2018-5526 Denial of service in BIG-IP (ASM)

Medium 6.5 Published Updated

Attackers can bypass Behavioral DOS protection on F5 BIG-IP ASM, leading to potential service disruption during attacks.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2018-5526?

CVE-2018-5526 is a medium-severity denial of service vulnerability in F5 Big-Ip Application Security Manager, published on 1 Jun 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Under certain conditions, on F5 BIG-IP ASM 13.1.0-13.1.0.5, Behavioral DOS (BADOS) protection may fail during an attack.

Which versions are affected by CVE-2018-5526?

It affects 1 product.

Products include F5 Big-Ip Application Security Manager.

How do I fix CVE-2018-5526?

No fix has been published for CVE-2018-5526 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2018-5526 being exploited?

There is no known exploitation of CVE-2018-5526 in the wild and no public exploit code.

All F5 Big-Ip Application Security Manager vulnerabilities

Sources

Also known as GHSA-4vpm-5p84-vm6f.

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