CVE-2020-1918
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS
Percentile
55.1%
In-memory file operations (ie: using fopen on a data URI) did not properly restrict negative seeking, allowing for the reading of memory prior to the in-memory buffer. This issue affects HHVM versions prior to 4.56.3, all versions between 4.57.0 and 4.80.1, all versions between 4.81.0 and 4.93.1, and versions 4.94.0, 4.95.0, 4.96.0, 4.97.0, 4.98.0.
Affected configurations
| Vendor | Product | Version | CPE |
|---|---|---|---|
| hhvm | * | cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:* | |
| hhvm | 4.94.0 | cpe:2.3:a:facebook:hhvm:4.94.0:*:*:*:*:*:*:* | |
| hhvm | 4.95.0 | cpe:2.3:a:facebook:hhvm:4.95.0:*:*:*:*:*:*:* | |
| hhvm | 4.96.0 | cpe:2.3:a:facebook:hhvm:4.96.0:*:*:*:*:*:*:* | |
| hhvm | 4.97.0 | cpe:2.3:a:facebook:hhvm:4.97.0:*:*:*:*:*:*:* | |
| hhvm | 4.98.0 | cpe:2.3:a:facebook:hhvm:4.98.0:*:*:*:*:*:*:* |
Related
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS
Percentile
55.1%