CVE-2017-11608 Denial of service in n/a

Medium 6.5 Published Updated

A heap-based buffer over-read in LibSass allows remote attackers to cause a denial of service via crafted input.

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
Available

What is CVE-2017-11608?

CVE-2017-11608 is a medium-severity denial of service vulnerability in n/a, published on 24 Jul 2017. 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

There is a heap-based buffer over-read in the Sass::Prelexer::re_linebreak function in lexer.cpp in LibSass 3.4.5. A crafted input will lead to a remote denial of service attack.

Weakness: CWE-125

Which versions are affected by CVE-2017-11608?

It affects 1 product.

Products include Libsass Libsass.

How do I fix CVE-2017-11608?

Upgrade to a fixed version.

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-2017-11608 being exploited?

There is no known exploitation of CVE-2017-11608 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2017-11608, GHSA-5cqh-5hxx-9w4g, UBUNTU-CVE-2017-11608.

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