CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
6.2 | $0-$5k | 0.00 |
A vulnerability was found in Facebook HHVM up to 4.83.0 (Social Network Software). It has been declared as critical. This vulnerability affects an unknown functionality of the component Admin Server. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect integrity, and availability.
The weakness was disclosed 10/27/2021. The advisory is shared for download at facebook.com. This vulnerability was named CVE-2019-3556 since 01/02/2019. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1006.
Upgrading to version 4.56.2, 4.78.1, 4.79.1, 4.80.1, 4.81.1, 4.82.1 or 4.83.1 eliminates this vulnerability. The upgrade is hosted for download at hhvm.com. Applying the patch abe0b29e4d3a610f9bc920b8be4ad8403364c2d4 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.
Product
Type
Vendor
Name
Version
- 4.0
- 4.1
- 4.2
- 4.3
- 4.4
- 4.5
- 4.6
- 4.7
- 4.8
- 4.9
- 4.10
- 4.11
- 4.12
- 4.13
- 4.14
- 4.15
- 4.16
- 4.17
- 4.18
- 4.19
- 4.20
- 4.21
- 4.22
- 4.23
- 4.24
- 4.25
- 4.26
- 4.27
- 4.28
- 4.29
- 4.30
- 4.31
- 4.32
- 4.33
- 4.34
- 4.35
- 4.36
- 4.37
- 4.38
- 4.39
- 4.40
- 4.41
- 4.42
- 4.43
- 4.44
- 4.45
- 4.46
- 4.47
- 4.48
- 4.49
- 4.50
- 4.51
- 4.52
- 4.53
- 4.54
- 4.55
- 4.56
- 4.56.0
- 4.56.1
- 4.57
- 4.58
- 4.59
- 4.60
- 4.61
- 4.62
- 4.63
- 4.64
- 4.65
- 4.66
- 4.67
- 4.68
- 4.69
- 4.70
- 4.71
- 4.72
- 4.73
- 4.74
- 4.75
- 4.76
- 4.77
- 4.78
- 4.79
- 4.80
- 4.81
- 4.82
- 4.83
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: 6.3VulDB Meta Temp Score: 6.2
VulDB Base Score: 4.6
VulDB Temp Score: 4.4
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: Path traversalCWE: CWE-22
CAPEC: 🔍
ATT&CK: 🔍
Local: No
Remote: Partially
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: HHVM 4.56.2/4.78.1/4.79.1/4.80.1/4.81.1/4.82.1/4.83.1
Patch: abe0b29e4d3a610f9bc920b8be4ad8403364c2d4
Timeline
01/02/2019 🔍10/27/2021 🔍
10/27/2021 🔍
10/31/2021 🔍
Sources
Advisory: abe0b29e4d3a610f9bc920b8be4ad8403364c2d4Status: Confirmed
Confirmation: 🔍
CVE: CVE-2019-3556 (🔍)
Entry
Created: 10/27/2021 07:11 AMUpdated: 10/31/2021 07:51 AM
Changes: 10/27/2021 07:11 AM (43), 10/31/2021 07:45 AM (3), 10/31/2021 07:51 AM (18)
Complete: 🔍
Cache ID: 18:E46:40
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