USN-4958-1

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Source
https://ubuntu.com/security/notices/USN-4958-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4958-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-4958-1
Published
2021-05-17T22:50:01Z
Modified
2026-04-22T10:14:40Z
Summary
caribou vulnerability
Details

It was discovered that the Caribou onscreen keyboard could be made to crash when given certain input values. An attacker could use this to bypass screen-locking applications that support using Caribou as an input mechanism.

References

Affected packages

Ubuntu:20.04:LTS / caribou

Package

Name
caribou
Purl
pkg:deb/ubuntu/caribou@0.4.21-7ubuntu0.20.04.1?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.4.21-7ubuntu0.20.04.1

Affected versions

0.*
0.4.21-7

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "caribou",
            "binary_version": "0.4.21-7ubuntu0.20.04.1"
        },
        {
            "binary_name": "caribou-antler",
            "binary_version": "0.4.21-7ubuntu0.20.04.1"
        },
        {
            "binary_name": "gir1.2-caribou-1.0",
            "binary_version": "0.4.21-7ubuntu0.20.04.1"
        },
        {
            "binary_name": "libcaribou-common",
            "binary_version": "0.4.21-7ubuntu0.20.04.1"
        },
        {
            "binary_name": "libcaribou-gtk-module",
            "binary_version": "0.4.21-7ubuntu0.20.04.1"
        },
        {
            "binary_name": "libcaribou-gtk3-module",
            "binary_version": "0.4.21-7ubuntu0.20.04.1"
        },
        {
            "binary_name": "libcaribou0",
            "binary_version": "0.4.21-7ubuntu0.20.04.1"
        }
    ]
}

Database specific

cves_map 
{
    "cves": [],
    "ecosystem": "Ubuntu:20.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4958-1.json"