CVE-2019-11926 Memory corruption in HHVM
Attackers can trigger out-of-bounds memory access in HHVM via malicious JPEG files, potentially leading to code execution or crashes.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-11926?
CVE-2019-11926 is a critical memory corruption vulnerability in Facebook HHVM, published on 6 Sep 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Insufficient boundary checks when processing M_SOFx markers from JPEG headers in the GD extension could allow access to out-of-bounds memory via a maliciously constructed invalid JPEG input. This issue affects HHVM versions prior to 3.30.9, all versions between 4.0.0 and 4.8.3, all versions between 4.9.0 and 4.15.2, and versions 4.16.0 to 4.16.3, 4.17.0 to 4.17.2, 4.18.0 to 4.18.1, 4.19.0, 4.20.0 to 4.20.1.
Which versions are affected by CVE-2019-11926?
It affects 1 product.
Products include Facebook Hhvm.
How do I fix CVE-2019-11926?
No fix has been published for CVE-2019-11926 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2019-11926 being exploited?
There is no known exploitation of CVE-2019-11926 in the wild and no public exploit code.
Other vulnerabilities in Facebook HHVM
Sources
Also known as GHSA-rjfc-697q-4r5p, UBUNTU-CVE-2019-11926.