CVE-2018-6340
HIGHCVSS 8.1/10EPSS 1.43%
Last modified
CVE-2018-6340 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. 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. EPSS estimates a 1.43% chance of exploitation in the next 30 days.
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).
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Hhvm | <= 3.27.4 | |
| Hhvm | 3.30 |
References
- https://github.com/facebook/hhvm/commit/4bff3bfbe90d10451e4638c2118d1ad1117bb3e3Patch, Third Party Advisory
- https://hhvm.com/blog/2018/12/18/hhvm-3.30.1.htmlThird Party Advisory
- https://github.com/facebook/hhvm/commit/4bff3bfbe90d10451e4638c2118d1ad1117bb3e3Patch, Third Party Advisory
- https://hhvm.com/blog/2018/12/18/hhvm-3.30.1.htmlThird Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2018-6340?
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).
How severe is CVE-2018-6340?
CVE-2018-6340 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 1.43% probability of exploitation in the next 30 days.
How do I fix CVE-2018-6340?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2018-6340?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST