CVE-2022-27816: Simple Wayland HotKey Daemon Denial of Service Vulnerability

HIGH
Advisory Identifier: GHSA-8m49-2xj8-67v9
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CVSS 7.1
CWE-59
Published
Advisory Summary

CVE-2022-27816 is a HIGH (CVSS 7.1) denial of service vulnerability (CWE-59: Improper Link Resolution Before File Access ('Link Following')) affecting Simple Wayland HotKey Daemon libraries in the crates.io ecosystem. The issue involves data loss/denial of service in swhkd. Remediation is available by upgrading affected packages to version 1.2.0.

CVE-2022-27816 at a Glance

CVE Identifier CVE-2022-27816
GHSA Identifier GHSA-8m49-2xj8-67v9
Severity HIGH
CVSS v3.1 Base Score 7.1
CWE Classification CWE-59: Improper Link Resolution Before File Access ('Link Following')
Affected Product Simple Wayland HotKey Daemon
Package Ecosystem crates.io
Published Date
Last Updated

Security Impact

CVSS: 7.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H).

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2022-27816

To remediate this vulnerability, upgrade all affected Simple Wayland HotKey Daemon dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Simple-Wayland-HotKey-Daemon fixed: 1.2.0 
Upgrade Simple-Wayland-HotKey-Daemon to 1.2.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for Simple-Wayland-HotKey-Daemon

How to Check if You Are Affected

To determine whether your application is affected by CVE-2022-27816, inspect your project dependencies for Simple Wayland HotKey Daemon:

inspect dependencies for Simple-Wayland-HotKey-Daemon

Analyze the terminal output to locate any version of Simple Wayland HotKey Daemon in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.2.0), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-59: Improper Link Resolution Before File Access ('Link Following'), where the product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. In Simple Wayland HotKey Daemon, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

SWHKD 1.1.5 unsafely uses the /tmp/swhks.pid pathname. There can be data loss or a denial of service. A patch is available on the `1.1.0` branch of the repository.

CVE-2022-27816 Affected Simple Wayland HotKey Daemon Versions

1 component(s)
Fixed Versions:
1.2.0
Product / Package Ecosystem Affected Versions Fixed Version
Simple-Wayland-HotKey-Daemon
 crates.io
< 1.2.0
1.2.0

References

NVD — CVE-2022-27816 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-27816
Security Fix Commit FIX COMMIT
https://github.com/waycrate/swhkd/commit/0b620a09605afb815c6d8d8953bbb7a10a8c0575
Simple Wayland HotKey Daemon Source Repository REPOSITORY
https://github.com/waycrate/swhkd
Simple Wayland HotKey Daemon Release RELEASE
https://github.com/waycrate/swhkd/releases/tag/1.2.0
Simple Wayland HotKey Daemon Security Information SECURITY
http://www.openwall.com/lists/oss-security/2022/04/14/1

Frequently Asked Questions

What is CVE-2022-27816?
CVE-2022-27816 is a security vulnerability in Simple Wayland HotKey Daemon involving Data Loss/Denial of Service in SWHKD under CWE-59: Improper Link Resolution Before File Access ('Link Following').
Which Simple Wayland HotKey Daemon versions are affected?
Affected versions include releases prior to 1.2.0 across affected packages: Simple-Wayland-HotKey-Daemon.
What version fixes CVE-2022-27816?
Upgrading to 1.2.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is Simple-Wayland-HotKey-Daemon affected?
Yes, Simple-Wayland-HotKey-Daemon is affected in releases prior to 1.2.0. Upgrade your dependency to 1.2.0 or later.
What is the CVSS score of CVE-2022-27816?
CVE-2022-27816 has a CVSS v3.1 base score of 7.1 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.
What CWE is associated with CVE-2022-27816?
CVE-2022-27816 is classified under CWE-59: Improper Link Resolution Before File Access ('Link Following') (The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.).
How can I check crates.io dependencies for CVE-2022-27816?
Run the dependency tree command: 'inspect dependencies for Simple-Wayland-HotKey-Daemon'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-8m49-2xj8-67v9",
  "modified" : "2022-04-28T18:02:03Z",
  "published" : "2022-03-31T00:00:24Z",
  "aliases" : [ "CVE-2022-27816" ],
  "summary" : "Data Loss/Denial of Service in SWHKD",
  "details" : "SWHKD 1.1.5 unsafely uses the /tmp/swhks.pid pathname. There can be data loss or a denial of service. A patch is available on the `1.1.0` branch of the repository.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "Simple-Wayland-HotKey-Daemon"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.2.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-27816"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/waycrate/swhkd/commit/0b620a09605afb815c6d8d8953bbb7a10a8c0575"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/waycrate/swhkd"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/waycrate/swhkd/releases/tag/1.2.0"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2022/04/14/1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-59" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-04-01T15:15:32Z",
    "nvd_published_at" : "2022-03-30T02:15:00Z"
  }
}