CVE-2021-3567
A flaw was found in Caribou due to a regression of CVE-2020-25712 fix. An attacker could use this...
A flaw was found in Caribou due to a regression of CVE-2020-25712 fix. An attacker could use this flaw to bypass screen-locking applications that leverage Caribou as an input mechanism. The highest threat from this vulnerability is to system availability.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
A flaw was found in Caribou due to a regression of CVE-2020-25712 fix. An attacker could use this flaw to bypass screen-locking applications that leverage Caribou as an input mechanism. The highest threat from this vulnerability is to system availability.
- Record
CVE-2021-3567- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-20, CWE-787
- Updated
- 2026-11-02
CVE List No score
A flaw was found in Caribou due to a regression of CVE-2020-25712 fix. An attacker could use this flaw to bypass screen-locking applications that leverage Caribou as an input mechanism. The highest threat from this vulnerability is to system availability.
- Record
CVE-2021-3567- Weakness
- CWE-20
- Updated
- 2026-11-02
EUVDEUVD-2021-26877 No score
A flaw was found in Caribou due to a regression of CVE-2020-25712 fix. An attacker could use this flaw to bypass screen-locking applications that leverage Caribou as an input mechanism. The highest threat from this vulnerability is to system availability.
- Record
EUVD-2021-26877- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-g7cf-5cjw-6ppm
A flaw was found in Caribou due to a regression of CVE-2020-25712 fix. An attacker could use this...
A flaw was found in Caribou due to a regression of CVE-2020-25712 fix. An attacker could use this flaw to bypass screen-locking applications that leverage Caribou as an input mechanism. The highest threat from this vulnerability is to system availability.
- Record
GHSA-g7cf-5cjw-6ppm- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-20, CWE-787
- Updated
- 2026-11-02
OSV
A flaw was found in Caribou due to a regression of CVE-2020-25712 fix. An attacker could use this flaw to bypass screen-locking applications that leverage Caribou as an input mechanism. The highest threat from this vulnerability is to system availability.
- Record
CVE-2021-3567- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2021-3567
A flaw was found in Caribou due to a regression of CVE-2020-25712 fix. An attacker could use this flaw to bypass screen-locking applications that leverage Caribou as an input mechanism. The highest threat from this vulnerability is to system availability.
- Record
DEBIAN-CVE-2021-3567- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Show 7 moreShow less
OSVUBUNTU-CVE-2021-3567
A flaw was found in Caribou due to a regression of CVE-2020-25712 fix. An attacker could use this flaw to bypass screen-locking applications that leverage Caribou as an input mechanism. The highest threat from this vulnerability is to system availability.
- Record
UBUNTU-CVE-2021-3567- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVopenSUSE-SU-2021:1071-1 No score
Security update for caribou
This update for caribou fixes the following issues:
Security issue fixed:
- CVE-2021-3567: Fixed a segfault when attempting to use shifted characters (bsc#1186617).
This update was imported from the SUSE:SLE-15-SP2:Update update project.
- Record
openSUSE-SU-2021:1071-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2021:2414-1 No score
Security update for caribou
This update for caribou fixes the following issues:
Security issue fixed:
- CVE-2021-3567: Fixed a segfault when attempting to use shifted characters (bsc#1186617).
- Record
openSUSE-SU-2021:2414-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:10674-1 No score
caribou-0.4.21-7.2 on GA media
These are all security issues fixed in the caribou-0.4.21-7.2 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:10674-1- Updated
- 2026-11-02
OSVSUSE-SU-2021:1943-1 No score
Security update for caribou
This update for caribou fixes the following issues:
Security issue fixed:
- CVE-2021-3567: Fixed a segfault when attempting to use shifted characters (bsc#1186617).
- Record
SUSE-SU-2021:1943-1- Updated
- 2026-11-02
OSVSUSE-SU-2021:2007-1 No score
Security update for caribou
This update for caribou fixes the following issues:
Security issue fixed:
- CVE-2021-3567: Fixed a segfault when attempting to use shifted characters (bsc#1186617).
- Record
SUSE-SU-2021:2007-1- Updated
- 2026-11-02
OSVSUSE-SU-2021:2414-1 No score
Security update for caribou
This update for caribou fixes the following issues:
Security issue fixed:
- CVE-2021-3567: Fixed a segfault when attempting to use shifted characters (bsc#1186617).
- Record
SUSE-SU-2021:2414-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
caribouDebian:12 |
before 0.4.21-7.1 | 0.4.21-7.1 |
caribouDebian:13 |
before 0.4.21-7.1 | 0.4.21-7.1 |
caribouDebian:14 |
before 0.4.21-7.1 | 0.4.21-7.1 |
caribouSUSE:HPE Helion OpenStack 8 |
before 0.4.21-8.3.1 | 0.4.21-8.3.1 |
caribouSUSE:OpenStack Cloud 8 |
before 0.4.21-8.3.1 | 0.4.21-8.3.1 |
caribouSUSE:OpenStack Cloud 9 |
before 0.4.21-8.3.1 | 0.4.21-8.3.1 |
caribouSUSE:OpenStack Cloud Crowbar 8 |
before 0.4.21-8.3.1 | 0.4.21-8.3.1 |
caribouSUSE:OpenStack Cloud Crowbar 9 |
before 0.4.21-8.3.1 | 0.4.21-8.3.1 |
caribouSUSE:Linux Enterprise Server for SAP Applications 12 SP3 |
before 0.4.21-8.3.1 | 0.4.21-8.3.1 |
caribouSUSE:Linux Enterprise Server for SAP Applications 12 SP4 |
before 0.4.21-8.3.1 | 0.4.21-8.3.1 |
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| Package | Affected | Fixed |
|---|---|---|
caribouSUSE:Linux Enterprise Software Development Kit 12 SP5 |
before 0.4.21-8.3.1 | 0.4.21-8.3.1 |
caribouSUSE:Linux Enterprise Server 12 SP2-BCL |
before 0.4.21-8.3.1 | 0.4.21-8.3.1 |
caribouSUSE:Linux Enterprise Server 12 SP3-LTSS |
before 0.4.21-8.3.1 | 0.4.21-8.3.1 |
caribouSUSE:Linux Enterprise Server 12 SP3-BCL |
before 0.4.21-8.3.1 | 0.4.21-8.3.1 |
caribouSUSE:Linux Enterprise Server 12 SP4-LTSS |
before 0.4.21-8.3.1 | 0.4.21-8.3.1 |
caribouSUSE:Linux Enterprise Server 12 SP5 |
before 0.4.21-8.3.1 | 0.4.21-8.3.1 |
caribouSUSE:Linux Enterprise Server for SAP Applications 12 SP5 |
before 0.4.21-8.3.1 | 0.4.21-8.3.1 |
caribouSUSE:Linux Enterprise Workstation Extension 12 SP5 |
before 0.4.21-8.3.1 | 0.4.21-8.3.1 |
caribouSUSE:Linux Enterprise High Performance Computing 15-ESPOS |
before 0.4.21-5.3.1 | 0.4.21-5.3.1 |
caribouSUSE:Linux Enterprise High Performance Computing 15-LTSS |
before 0.4.21-5.3.1 | 0.4.21-5.3.1 |
caribouSUSE:Linux Enterprise High Performance Computing 15 SP1-ESPOS |
before 0.4.21-5.3.1 | 0.4.21-5.3.1 |
caribouSUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS |
before 0.4.21-5.3.1 | 0.4.21-5.3.1 |
caribouSUSE:Linux Enterprise Server 15-LTSS |
before 0.4.21-5.3.1 | 0.4.21-5.3.1 |
caribouSUSE:Linux Enterprise Server 15 SP1-BCL |
before 0.4.21-5.3.1 | 0.4.21-5.3.1 |
caribouSUSE:Linux Enterprise Server 15 SP1-LTSS |
before 0.4.21-5.3.1 | 0.4.21-5.3.1 |
caribouSUSE:Linux Enterprise Server for SAP Applications 15 |
before 0.4.21-5.3.1 | 0.4.21-5.3.1 |
caribouSUSE:Linux Enterprise Server for SAP Applications 15 SP1 |
before 0.4.21-5.3.1 | 0.4.21-5.3.1 |
caribouSUSE:Manager Proxy 4.0 |
before 0.4.21-5.3.1 | 0.4.21-5.3.1 |
caribouSUSE:Manager Retail Branch Server 4.0 |
before 0.4.21-5.3.1 | 0.4.21-5.3.1 |
caribouSUSE:Manager Server 4.0 |
before 0.4.21-5.3.1 | 0.4.21-5.3.1 |
caribouSUSE:Enterprise Storage 6 |
before 0.4.21-5.3.1 | 0.4.21-5.3.1 |
caribouSUSE:Linux Enterprise Module for Desktop Applications 15 SP2 |
before 0.4.21-12.5.1 | 0.4.21-12.5.1 |
caribouSUSE:Linux Enterprise Module for Desktop Applications 15 SP3 |
before 0.4.21-12.5.1 | 0.4.21-12.5.1 |
caribouUbuntu:16.04:LTS |
All versions, plus listed versions 0.4.18.1-10.4.19-10.4.20-1 |
None known |
caribouUbuntu:18.04:LTS |
All versions, plus listed versions 0.4.21-20.4.21-30.4.21-40.4.21-5 |
None known |
caribouopenSUSE:Leap 15.2 |
before 0.4.21-lp152.7.3.1 | 0.4.21-lp152.7.3.1 |
caribouopenSUSE:Leap 15.3 |
before 0.4.21-12.5.1 | 0.4.21-12.5.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-3567 is a high vulnerability (CVSS 7.5) in Gnome Caribou, published June 10, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.16%, the 67th percentile. Fixed in caribou 0.4.21-7.1.
References
bugzilla.redhat.com/show_bug.cgi?id=1962836
nvd.nist.gov/vuln/detail/CVE-2021-3567
github.com/advisories/GHSA-g7cf-5cjw-6ppm
security-tracker.debian.org/tracker/CVE-2021-3567
suse.com/support/update/announcement/2021/suse-su-20211943-1
bugzilla.suse.com/1186617
Show 11 moreShow less
ubuntu.com/security/CVE-2021-3567
bugs.launchpad.net/ubuntu/+source/caribou/+bug/1912060
gitlab.gnome.org/GNOME/caribou/-/merge_requests/3
cve.org/CVERecord?id=CVE-2021-3567
lists.opensuse.org/archives/list/[email protected]/thread/WWXNSU7RCV6WGSN2JK7NWBUOQVY6MMXA