HHVM up to 3.27.4/3.30 getextendedstats Hostname/Port out-of-bounds
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
6.8 | $0-$5k | 0.00 |
A vulnerability classified as critical has been found in HHVM up to 3.27.4/3.30. This affects the function Memcache::getextendedstats
. The manipulation as part of a Hostname/Port leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:
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).
The bug was discovered 12/18/2018. The weakness was released 12/31/2018 (Website). The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2018-6340 since 01/26/2018. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.
The vulnerability was handled as a non-public zero-day exploit for at least 13 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371667 (HHVM Out-Of-Bound Read Vulnerability).
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
Entries connected to this vulnerability are available at 128600, 128598 and 128597.
Product
Name
Version
- 3.0
- 3.1
- 3.2
- 3.3
- 3.4
- 3.5
- 3.6
- 3.7
- 3.8
- 3.9
- 3.10
- 3.11
- 3.12
- 3.13
- 3.14
- 3.15
- 3.16
- 3.17
- 3.18
- 3.19
- 3.20
- 3.21
- 3.22
- 3.23
- 3.24
- 3.25
- 3.26
- 3.27
- 3.27.0
- 3.27.1
- 3.27.2
- 3.27.3
- 3.27.4
- 3.28
- 3.29
- 3.30
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 6.8VulDB Meta Temp Score: 6.8
VulDB Base Score: 5.6
VulDB Temp Score: 5.6
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 8.1
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
---|---|---|---|---|---|
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
---|---|---|---|---|---|
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Out-of-boundsCWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔍
Patch: github.com
Timeline
01/26/2018 🔍12/18/2018 🔍
12/31/2018 🔍
12/31/2018 🔍
01/01/2019 🔍
06/22/2023 🔍
Sources
Advisory: 4bff3bfbe90d10451e4638c2118d1ad1117bb3e3Status: Not defined
CVE: CVE-2018-6340 (🔍)
See also: 🔍
Entry
Created: 01/01/2019 12:17Updated: 06/22/2023 15:30
Changes: 01/01/2019 12:17 (59), 04/25/2020 16:27 (1), 06/22/2023 15:30 (4)
Complete: 🔍
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