Type Confusion Vulnerability in HHVM by Facebook
CVE-2016-1000005

9.8CRITICAL

Key Information:

Vendor

Facebook

Status
Hhvm
Vendor
CVE Published:
19 February 2020

What is CVE-2016-1000005?

The vulnerability arises from the 'mcrypt_get_block_size' function in HHVM, which fails to enforce that the 'module' parameter is strictly a string. This oversight allows for type confusion, permitting other data types to be processed unexpectedly, potentially leading to security risks. This issue impacts specific versions of HHVM, making it crucial to ensure users are running updated software to mitigate the potential for exploitation.

References

https://github.com/facebook/hhvm/commit/39e7e177473350b3a...
x_refsource_CONFIRM
https://www.facebook.com/security/advisories/cve-2016-100...
x_refsource_CONFIRM

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

.