CVE-2017-7776 Memory corruption in Firefox
A heap-based buffer overflow in the Graphite2 library allows attackers to execute arbitrary code or cause a crash in Firefox.
- 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-2017-7776?
CVE-2017-7776 is a high-severity memory corruption vulnerability in Mozilla Firefox, published on 12 Apr 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
Heap-based Buffer Overflow read in Graphite2 library in Firefox before 54 in graphite2::Silf::getClassGlyph.
Weakness: CWE-125
Which versions are affected by CVE-2017-7776?
It affects 2 products.
Products include Mozilla Firefox, Sil Graphite2.
How do I fix CVE-2017-7776?
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-2017-7776 being exploited?
There is no known exploitation of CVE-2017-7776 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as DEBIAN-CVE-2017-7776, GHSA-w8wv-29f2-fhc6, UBUNTU-CVE-2017-7776.