CVE-2018-20001 Denial of service in n/a

What is CVE-2018-20001?

CVE-2018-20001 is a medium-severity denial of service vulnerability in Libav Libav, published on 10 Dec 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

In Libav 12.3, there is a floating point exception in the range_decode_culshift function (called from range_decode_bits) in libavcodec/apedec.c that will lead to remote denial of service via crafted input.

Weakness: CWE-20

Which versions are affected by CVE-2018-20001?

It affects 1 product.

Products include Libav Libav.

How do I fix CVE-2018-20001?

No fix has been published for CVE-2018-20001 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-2018-20001 being exploited?

There is no known exploitation of CVE-2018-20001 in the wild and no public exploit code.

Other vulnerabilities in Libav Libav

• CVE-2014-3984 Multiple unspecified vulnerabilities in Libav before 0.8.12 allow remote attackers to have unknown impact and vectors. Critical 10.0
• CVE-2017-9051 Null dereference in n/a Critical 9.8
• CVE-2014-4609 Integer overflow in n/a High 8.8
• CVE-2019-9719 Memory corruption in n/a High 8.8
• CVE-2018-5766 Memory corruption in n/a High 8.8

All Libav Libav vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-f435-99c6-g2mw, UBUNTU-CVE-2018-20001.