CVE-2021-3939
CVSS V2 High 7.2
CVSS V3 High 7.8
Description
Ubuntu-specific modifications to accountsservice (in patch file debian/patches/0010-set-language.patch) caused the fallback_locale variable, pointing to static storage, to be freed, in the user_change_language_authorized_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.
Overview
- CVE ID
- CVE-2021-3939
- Assigner
- security@ubuntu.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-11-17T04:15:06
- Last Modified Date
- 2021-11-19T16:30:21
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:canonical:accountsservice:*:*:*:*:*:*:*:* | 1 | OR | 0.6.55-0ubuntu12\~20.04 | 0.6.55-0ubuntu12\~20.05 |
| cpe:2.3:a:canonical:accountsservice:*:*:*:*:*:*:*:* | 1 | OR | 0.6.55-0ubuntu13 | 0.6.55-0ubuntu13.3 |
| cpe:2.3:a:canonical:accountsservice:*:*:*:*:*:*:*:* | 1 | OR | 0.6.55-0ubuntu14 | 0.6.55-0ubuntu14.1 |
| cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* | 1 | OR | ||
| cpe:2.3:o:canonical:ubuntu_linux:21.04:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:canonical:ubuntu_linux:21.10:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:L/AC:L/Au:N/C:C/I:C/A:C
- Access Vector
- LOCAL
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- COMPLETE
- Integrity Impact
- COMPLETE
- Availability Impact
- COMPLETE
- Base Score
- 7.2
- Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 10
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- LOCAL
- Attack Compatibility
- LOW
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 7.8
- Base Severity
- HIGH
- Exploitability Score
- 1.8
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://bugs.launchpad.net/ubuntu/+source/accountsservice/+bug/1950149 | Broken Link |
| https://ubuntu.com/security/notices/USN-5149-1 | Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-3939 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3939 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 06:45:36 | Added to TrackCVE | |||
| 2022-12-05 14:39:32 | 2021-11-17T04:15Z | 2021-11-17T04:15:06 | CVE Published Date | updated |
| 2022-12-05 14:39:32 | 2021-11-19T16:30:21 | CVE Modified Date | updated | |
| 2022-12-05 14:39:32 | Analyzed | Vulnerability Status | updated |