CVE-2020-1918

State: Published
Severity: Not scored
Published: Mar 10, 2021
Updated: Aug 4, 2024
Reserved: Dec 2, 2019

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.

Scores

The record has no CVSS score.

Weaknesses

CWE-127 Buffer Under-read (CWE-127)

Affected Products

Product	Versions
HHVMFacebook	4.98.1 to before unspecifiedNot affected 4.98.0Affected 4.97.1 to before unspecifiedNot affected 4.97.0Affected 4.96.1 to before unspecifiedNot affected 4.96.0Affected 4.95.1 to before unspecifiedNot affected 4.95.0Affected 4.94.1 to before unspecifiedNot affected 4.94.0Affected 4.93.2 to before unspecifiedNot affected 4.81.0 to before unspecifiedAffected 4.80.2 to before unspecifiedNot affected 4.57.0 to before unspecifiedAffected 4.56.3 to before unspecifiedNot affected before 4.56.3Affected

Product

Versions

HHVMFacebook

4.98.1 to before unspecifiedNot affected
4.98.0Affected
4.97.1 to before unspecifiedNot affected
4.97.0Affected
4.96.1 to before unspecifiedNot affected
4.96.0Affected
4.95.1 to before unspecifiedNot affected
4.95.0Affected
4.94.1 to before unspecifiedNot affected
4.94.0Affected
4.93.2 to before unspecifiedNot affected
4.81.0 to before unspecifiedAffected
4.80.2 to before unspecifiedNot affected
4.57.0 to before unspecifiedAffected
4.56.3 to before unspecifiedNot affected
before 4.56.3Affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.