UBUNTU-CVE-2021-3939

Source
https://ubuntu.com/security/CVE-2021-3939
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-3939.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-3939
Upstream
Downstream
Related
Published
2021-11-16T18:00:00Z
Modified
2026-02-04T03:37:32.813498Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - high
Summary
[none]
Details

Ubuntu-specific modifications to accountsservice (in patch file debian/patches/0010-set-language.patch) caused the fallbacklocale variable, pointing to static storage, to be freed, in the userchangelanguageauthorized_cb function. This is reachable via the SetLanguage dbus function. This is fixed in versions 0.6.55-0ubuntu12~20.04.5, 0.6.55-0ubuntu13.3, 0.6.55-0ubuntu14.1.

References

Affected packages

Ubuntu:20.04:LTS / accountsservice

Package

Name
accountsservice
Purl
pkg:deb/ubuntu/accountsservice@0.6.55-0ubuntu12~20.04.5?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.6.55-0ubuntu12~20.04.5

Affected versions

0.*
0.6.55-0ubuntu10
0.6.55-0ubuntu11
0.6.55-0ubuntu12~20.04.1
0.6.55-0ubuntu12~20.04.2
0.6.55-0ubuntu12~20.04.4

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "0.6.55-0ubuntu12~20.04.5",
            "binary_name": "accountsservice"
        },
        {
            "binary_version": "0.6.55-0ubuntu12~20.04.5",
            "binary_name": "gir1.2-accountsservice-1.0"
        },
        {
            "binary_version": "0.6.55-0ubuntu12~20.04.5",
            "binary_name": "libaccountsservice-dev"
        },
        {
            "binary_version": "0.6.55-0ubuntu12~20.04.5",
            "binary_name": "libaccountsservice0"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-3939.json"

Ubuntu:22.04:LTS / accountsservice

Package

Name
accountsservice
Purl
pkg:deb/ubuntu/accountsservice@0.6.55-3ubuntu2?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.6.55-3ubuntu2

Affected versions

0.*
0.6.55-0ubuntu14
0.6.55-3ubuntu1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "0.6.55-3ubuntu2",
            "binary_name": "accountsservice"
        },
        {
            "binary_version": "0.6.55-3ubuntu2",
            "binary_name": "gir1.2-accountsservice-1.0"
        },
        {
            "binary_version": "0.6.55-3ubuntu2",
            "binary_name": "libaccountsservice-dev"
        },
        {
            "binary_version": "0.6.55-3ubuntu2",
            "binary_name": "libaccountsservice0"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-3939.json"