What is the vulnerability ID?

The vulnerability ID is CVE-2020-1919.

What is the severity of CVE-2020-1919?

The severity of CVE-2020-1919 is high, with a severity value of 7.5.

How does CVE-2020-1919 occur?

CVE-2020-1919 occurs due to incorrect bounds calculations in the substr_compare function, leading to an out-of-bounds read when the second string argument passed in is longer than the first.

How can I fix CVE-2020-1919?

To fix CVE-2020-1919, it is recommended to update HHVM to a version that is not affected by the vulnerability.

Vulnerability/
CVE-2020-1919

high

7.5

CWE

125

10/3/2021

4/8/2024

CVE-2020-1919

Q: Which software versions are affected by CVE-2020-1919?

CVE-2020-1919 affects HHVM versions prior to 4.56.3, all versions between 4.57.0 and 4.80.1, all versions between 4.81.0 and 4.93.1, and versions 4.94.0, 4.95.0, 4.96.0, 4.97.0, and 4.98.0.

First published: Wed Mar 10 2021(Updated: )

Incorrect bounds calculations in substr_compare could lead to an out-of-bounds read when the second string argument passed in is longer than the first. This issue affects HHVM versions prior to 4.56.3, all versions between 4.57.0 and 4.80.1, all versions between 4.81.0 and 4.93.1, and versions 4.94.0, 4.95.0, 4.96.0, 4.97.0, 4.98.0.

Credit: cve-assign@fb.com

Affected Software	Affected Version	How to fix
Facebook HHVM	<4.56.3
Facebook HHVM	>=4.57.0<4.80.2
Facebook HHVM	>=4.81.0<4.93.2
Facebook HHVM	=4.94.0
Facebook HHVM	=4.95.0
Facebook HHVM	=4.96.0
Facebook HHVM	=4.97.0
Facebook HHVM	=4.98.0

Remedy

https://github.com/facebook/hhvm/commit/08193b7f0cd3910256e00d599f0f3eb2519c44ca

Never miss a vulnerability like this again

Reference Links

Frequently Asked Questions

What is the vulnerability ID?
The vulnerability ID is CVE-2020-1919.
What is the severity of CVE-2020-1919?
The severity of CVE-2020-1919 is high, with a severity value of 7.5.
Which software versions are affected by CVE-2020-1919?
CVE-2020-1919 affects HHVM versions prior to 4.56.3, all versions between 4.57.0 and 4.80.1, all versions between 4.81.0 and 4.93.1, and versions 4.94.0, 4.95.0, 4.96.0, 4.97.0, and 4.98.0.
How does CVE-2020-1919 occur?
CVE-2020-1919 occurs due to incorrect bounds calculations in the substr_compare function, leading to an out-of-bounds read when the second string argument passed in is longer than the first.
How can I fix CVE-2020-1919?
To fix CVE-2020-1919, it is recommended to update HHVM to a version that is not affected by the vulnerability.

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agent/type
agent/softwarecombine
collector/mitre-cve
source/MITRE
agent/weakness
agent/remedy
agent/severity
agent/last-modified-date
agent/author
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vendor/facebook
canonical/facebook hhvm
version/facebook hhvm/4.57.0
version/facebook hhvm/4.81.0
version/facebook hhvm/4.94.0
version/facebook hhvm/4.95.0
version/facebook hhvm/4.96.0
version/facebook hhvm/4.97.0
version/facebook hhvm/4.98.0

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