8.1high
CVE-2018-6340
The Memcache::getextendedstats function can be used to trigger an out-of-bounds read.
Published 7 y ago · modified 4 mo ago · JSON
CVSS
8.1
v3.1 · CNA
CISA KEV
No
not known exploited
EPSS
1.4%
percentile 73%
Public exploits
0
none known
Summary
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).
CISA SSVC assessment
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 18 mo ago
Exploit prediction (EPSS)
1.43% probability of exploitation in the next 30 days, higher than 73% of all scored CVEs.
CVSS scores
| Assigned by | Version | Score | Vector |
|---|---|---|---|
| CISA ADP | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.0 | 8.1 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Affected products
- Facebook HHVM
Classification
- Weakness
- CWE-125 Out-of-bounds Read
References
- hhvm.com /blog/2018/12/18/hhvm-3.30.1.html · x_refsource_MISC, x_transferred
- github.com /facebook/hhvm/commit/4bff3bfbe90d10451e4638c2118d1ad1117bb3e3 · x_refsource_MISC, x_transferred
Sources
- CVE List: CVE-2018-6340
- NVD: CVE-2018-6340
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