CVE-2019-11929: Buffer Overflow
First published: Wed Oct 02 2019(Updated: )
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.
Credit: cve-assign@fb.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Facebook HHVM | <3.30.10 | |
| Facebook HHVM | >=4.0.0<=4.8.5 | |
| Facebook HHVM | >=4.9.0<=4.18.2 | |
| Facebook HHVM | =4.19.0 | |
| Facebook HHVM | =4.19.1 | |
| Facebook HHVM | =4.20.0 | |
| Facebook HHVM | =4.20.1 | |
| Facebook HHVM | =4.20.2 | |
| Facebook HHVM | =4.21.0 | |
| Facebook HHVM | =4.22.0 | |
| Facebook HHVM | =4.23.0 |
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Reference Links
Frequently Asked Questions
What is CVE-2019-11929?
CVE-2019-11929 is a vulnerability in HHVM that allows for read/write access to out-of-bounds memory, potentially leading to remote code execution.
Which versions of HHVM are affected by CVE-2019-11929?
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 to 4.23.0 are affected.
What is the severity of CVE-2019-11929?
The severity of CVE-2019-11929 is critical with a CVSS score of 9.8.
How can I fix CVE-2019-11929?
To fix CVE-2019-11929, update HHVM to version 3.30.10 or newer, version 4.8.6 or newer, version 4.18.3 or newer, or version 4.23.1 or newer.
Where can I find more information about CVE-2019-11929?
You can find more information about CVE-2019-11929 on the GitHub page for the HHVM commit addressing the vulnerability, the HHVM blog, and the Facebook security advisories page.
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- agent/weakness
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- agent/author
- agent/type
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- vendor/facebook
- canonical/facebook hhvm
- version/facebook hhvm/4.0.0
- version/facebook hhvm/4.8.5
- version/facebook hhvm/4.9.0
- version/facebook hhvm/4.18.2
- version/facebook hhvm/4.19.0
- version/facebook hhvm/4.19.1
- version/facebook hhvm/4.20.0
- version/facebook hhvm/4.20.1
- version/facebook hhvm/4.20.2
- version/facebook hhvm/4.21.0
- version/facebook hhvm/4.22.0
- version/facebook hhvm/4.23.0