UBUNTU-CVE-2020-1900

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Source
https://ubuntu.com/security/CVE-2020-1900
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-1900.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2020-1900
Upstream
Published
2021-03-11T01:15:00Z
Modified
2025-10-24T04:48:15Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - low
Summary
[none]
Details

When unserializing an object with dynamic properties HHVM needs to pre-reserve the full size of the dynamic property array before inserting anything into it. Otherwise the array might resize, invalidating previously stored references. This pre-reservation was not occurring in HHVM prior to v4.32.3, between versions 4.33.0 and 4.56.0, 4.57.0, 4.58.0, 4.58.1, 4.59.0, 4.60.0, 4.61.0, 4.62.0.

References

Affected packages

Ubuntu:16.04:LTS / hhvm

Package

Name
hhvm
Purl
pkg:deb/ubuntu/hhvm@3.11.1+dfsg-1ubuntu1?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.11.0+dfsg-1
3.11.1+dfsg-1
3.11.1+dfsg-1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.11.1+dfsg-1ubuntu1",
            "binary_name": "hhvm"
        },
        {
            "binary_version": "3.11.1+dfsg-1ubuntu1",
            "binary_name": "hhvm-dev"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-1900.json"

Ubuntu:18.04:LTS / hhvm

Package

Name
hhvm
Purl
pkg:deb/ubuntu/hhvm@3.21.0+dfsg-2ubuntu2?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.21.0+dfsg-2
3.21.0+dfsg-2build1
3.21.0+dfsg-2build2
3.21.0+dfsg-2build3
3.21.0+dfsg-2ubuntu2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.21.0+dfsg-2ubuntu2",
            "binary_name": "hhvm"
        },
        {
            "binary_version": "3.21.0+dfsg-2ubuntu2",
            "binary_name": "hhvm-dev"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-1900.json"