CVE-2022-21950 | canna: unsafe handling of /tmp/.iroha_unix directory

A Improper Access Control vulnerability in the systemd service of cana in openSUSE Backports SLE-15-SP3, openSUSE Backports SLE-15-SP4 allows local users to hijack the UNIX domain socket This issue affects: openSUSE Backports SLE-15-SP3 canna versions prior to canna-3.7p3-bp153.2.3.1. openSUSE Backports SLE-15-SP4 canna versions prior to 3.7p3-bp154.3.3.1. openSUSE Factory was also affected. Instead of fixing the package it was deleted there.

Published: 2022-09-07 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-21950 is rated Low Risk (30.7/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.09%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2022-21950

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-21 0.03% 0.09% +0.06%
2 2025-11-18 0.10% 0.03% -0.07%
3 2025-09-08 — 0.10% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-21950

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 1.8 3.4 [email protected]
5.3 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 1.8 3.4 [email protected]

Weakness enumeration for CVE-2022-21950

OS Trackers for CVE-2022-21950

vendor priority summary link
suse high CVE-2022-21950 severity important: SUSE including 12 source package names (canna, canna-3.7p3-bp153.2.3.1, …), 22 product×package rows across 5 product lines (SUSE Linux Enterprise Workstation Extension 12 SP5, SUSE Package Hub 15 SP3, … (5 product lines)): Fixed 20, Known Not Affected 2. https://www.suse.com/security/cve/CVE-2022-21950/

Affected software / configurations for CVE-2022-21950

Vendor Product Version Raw CPE
opensuse canna < 3.7p3-bp153.2.3.1 cpe:2.3:a:opensuse:canna:*:*:*:*:*:*:*:*
opensuse canna < 3.7p3-bp154.3.3.1 cpe:2.3:a:opensuse:canna:*:*:*:*:*:*:*:*
opensuse canna 3.7p3 cpe:2.3:a:opensuse:canna:3.7p3:*:*:*:*:*:*:*

References for CVE-2022-21950

URL Tags
https://bugzilla.suse.com/show_bug.cgi?id=1199280 Issue Tracking Vendor Advisory
cvelogic Threat Intelligence