← Back

CVE-2020-1918

nvd nist
Published: Mar 10, 2021Modified: Jun 17, 2026

JSON object

Loading...
7.5
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Exploitability: 3.9 / Impact: 3.6
Source: NVD

Description

In-memory file operations (ie: using fopen on a data URI) did not properly restrict negative seeking, allowing for the reading of memory prior to the in-memory buffer. 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.

Affected (8)

Products: Facebook: Hhvm
Facebook
1 product
Hhvm
Configuration A
8 vulnerable
Vulnerable SoftwareAffected Versions
Facebook
Hhvm
Before 4.56.3
Hhvm
From 4.57.0 to 4.80.2
Hhvm
From 4.81.0 to 4.93.2
Hhvm
Version 4.94.0
Hhvm
Version 4.95.0
Hhvm
Version 4.96.0
Hhvm
Version 4.97.0
Hhvm
Version 4.98.0

Related CWEs

CWE-125
Out-of-bounds Read
The product reads data past the end, or before the beginning, of the intended buffer.
CWE-127
Buffer Under-read
The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations prior to the targeted buffer.

References (4)

Source: cve-assign@fb.com
PatchThird Party Advisory
Source: cve-assign@fb.com
Release NotesVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
PatchThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Release NotesVendor Advisory

Timeline

No history available yet.