Integer Overflow Vulnerability in HHVM by Facebook
CVE-2020-1916

9.8CRITICAL

Key Information:

Vendor

Facebook

Status
Hhvm
Vendor
CVE Published:
10 March 2021

What is CVE-2020-1916?

An integer overflow vulnerability exists in HHVM due to an incorrect size calculation in the ldap_escape function. When excessively long input is provided, it may lead to an out-of-bounds write, compromising the integrity of the application. This vulnerability affects various versions of HHVM, specifically those prior to 4.56.2 and selected versions in the range of 4.57.0 through 4.83.0. Users are advised to upgrade to the latest version to mitigate any potential risks associated with this vulnerability.

Affected Version(s)

HHVM 4.83.0

HHVM 4.82.0

HHVM 4.81.0

References

https://hhvm.com/blog/2020/11/12/security-update.html
x_refsource_CONFIRM
https://github.com/facebook/hhvm/commit/abe0b29e4d3a610f9...
x_refsource_MISC

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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