CVE-2019-1000020 Denial of service in n/a
An attacker can cause a denial of service via an infinite loop in the ISO9660 parser by tricking a user into opening a malicious file.
- 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-2019-1000020?
CVE-2019-1000020 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 4 Feb 2019. 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
libarchive version commit 5a98dcf8a86364b3c2c469c85b93647dfb139961 onwards (version v2.8.0 onwards) contains a CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability in ISO9660 parser, archive_read_support_format_iso9660.c, read_CE()/parse_rockridge() that can result in DoS by infinite loop. This attack appears to be exploitable via the victim opening a specially crafted ISO9660 file.
Weakness: CWE-835
Which versions are affected by CVE-2019-1000020?
It affects 8 products.
Products include Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Libarchive Libarchive, Opensuse Leap, Redhat Enterprise Linux Desktop and 2 more.
How do I fix CVE-2019-1000020?
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-2019-1000020 being exploited?
There is no known exploitation of CVE-2019-1000020 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2019-1000020, GHSA-rv4c-7xgc-3x93, UBUNTU-CVE-2019-1000020.