CVE-2019-18281 Memory corruption in n/a
Attackers can cause a denial of service by crashing applications using the Qt text engine via specially crafted text files with many directional characters.
- 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-2019-18281?
CVE-2019-18281 is a medium-severity memory corruption vulnerability in Debian Debian Linux, published on 23 Oct 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
An out-of-bounds memory access in the generateDirectionalRuns() function in qtextengine.cpp in Qt qtbase 5.11.x and 5.12.x before 5.12.5 allows attackers to cause a denial of service by crashing an application via a text file containing many directional characters.
Weakness: CWE-119
Which versions are affected by CVE-2019-18281?
It affects 2 products.
Products include Debian Debian Linux, Qt Qtbase.
How do I fix CVE-2019-18281?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2019-18281 being exploited?
There is no known exploitation of CVE-2019-18281 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2019-18281, DSA-4556-1, GHSA-92xj-745q-j6qr, MGASA-2019-0356, OESA-2021-1158.