UBUNTU-CVE-2021-23803

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Source
https://ubuntu.com/security/CVE-2021-23803
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-23803.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-23803
Upstream
Published
2021-12-17T20:15:00Z
Modified
2025-10-24T04:50:09Z
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
  • 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 - medium
Summary
[none]
Details

This affects the package latte/latte before 2.10.6. There is a way to bypass allowFunctions that will affect the security of the application. When the template is set to allow/disallow the use of certain functions, adding control characters (x00-x08) after the function will bypass these restrictions.

References

Affected packages

Ubuntu:Pro:16.04:LTS / php-nette

Package

Name
php-nette
Purl
pkg:deb/ubuntu/php-nette@2.3.8-1ubuntu1+esm1?arch=source&distro=esm-apps/xenial

Affected ranges

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

Affected versions

2.*

2.3.4-1
2.3.5-1
2.3.7-1
2.3.8-1
2.3.8-1ubuntu1
2.3.8-1ubuntu1+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "php-nette",
            "binary_version": "2.3.8-1ubuntu1+esm1"
        }
    ]
}

Ubuntu:18.04:LTS / php-nette

Package

Name
php-nette
Purl
pkg:deb/ubuntu/php-nette@2.4-20160731-1ubuntu0.1?arch=source&distro=bionic

Affected ranges

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

Affected versions

2.*

2.4-20160731-1
2.4-20160731-1ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "php-nette",
            "binary_version": "2.4-20160731-1ubuntu0.1"
        }
    ]
}