CVE-2018-6340

State: Published
Severity: 8.1 High
Published: Dec 31, 2018
Updated: May 6, 2025
Reserved: Jan 26, 2018

Description

The Memcache::getextendedstats function can be used to trigger an out-of-bounds read. Exploiting this issue requires control over memcached server hostnames and/or ports. This affects all supported versions of HHVM (3.30 and 3.27.4 and below).

Scores

CVSS	Score	Vector	Source
3.1	8.1 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	CISA-ADP

Weaknesses

CWE-125 Out-of-bounds Read (CWE-125)

Affected Products

Product	Versions
HHVMFacebook	3.30.1Affected 3.30.0 to before unspecifiedAffected 3.27.5Affected before 3.27.5Affected

References

https://hhvm.com/blog/2018/12/18/hhvm-3.30.1.html
https://github.com/facebook/hhvm/commit/4bff3bfbe90d10451e4638c2118d1ad1117bb3e3

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