CVE-2019-11929 is a vulnerability in Facebook Hhvm
Published on October 2, 2019
Insufficient boundary checks when formatting numbers in number_format allows read/write access to out-of-bounds memory, potentially leading to remote code execution. This issue affects HHVM versions prior to 3.30.10, all versions between 4.0.0 and 4.8.5, all versions between 4.9.0 and 4.18.2, and versions 4.19.0, 4.19.1, 4.20.0, 4.20.1, 4.20.2, 4.21.0, 4.22.0, 4.23.0.
Weakness Type
What is a Buffer Overflow Vulnerability?
The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.
CVE-2019-11929 has been classified to as a Buffer Overflow vulnerability or weakness.
Products Associated with CVE-2019-11929
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Affected Versions
Facebook HHVM:- Version 4.24.0 is affected.
- Version 4.23.2 is affected.
- Version 4.23.0 and below unspecified is affected.
- Version 4.22.1 is affected.
- Version 4.22.0 and below unspecified is affected.
- Version 4.21.1 is affected.
- Version 4.21.0 and below unspecified is affected.
- Version 4.20.3 is affected.
- Version 4.20.0 and below unspecified is affected.
- Version 4.19.2 is affected.
- Version 4.19.0 and below unspecified is affected.
- Version 4.18.3 is affected.
- Version 4.9.0 and below unspecified is affected.
- Version 4.8.5 is affected.
- Version 4.0.0 and below unspecified is affected.
- Version 3.30.11 is affected.
- Version unspecified, <= 3.30.10 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.