CVE-2020-1918

CVSS V2 Medium 5 CVSS V3 High 7.5
Description
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.
Overview
  • CVE ID
  • CVE-2020-1918
  • Assigner
  • cve-assign@fb.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-03-10T16:15:14
  • Last Modified Date
  • 2021-03-15T15:53:04
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:* 1 OR 4.56.3
cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:* 1 OR 4.57.0 4.80.2
cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:* 1 OR 4.81.0 4.93.2
cpe:2.3:a:facebook:hhvm:4.94.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:facebook:hhvm:4.95.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:facebook:hhvm:4.96.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:facebook:hhvm:4.97.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:facebook:hhvm:4.98.0:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:P/I:N/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • NONE
  • Availability Impact
  • NONE
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • NONE
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://github.com/facebook/hhvm/commit/08193b7f0cd3910256e00d599f0f3eb2519c44ca Patch Third Party Advisory
https://hhvm.com/blog/2021/02/25/security-update.html Release Notes Vendor Advisory
History
Created Old Value New Value Data Type Notes
2022-05-10 07:19:59 Added to TrackCVE
2022-12-05 23:25:50 2021-03-10T16:15Z 2021-03-10T16:15:14 CVE Published Date updated
2022-12-05 23:25:50 2021-03-15T15:53:04 CVE Modified Date updated
2022-12-05 23:25:50 Analyzed Vulnerability Status updated