CVE-2016-7097
CVSS V2 Low 3.6
CVSS V3 Medium 4.4
Description
The filesystem implementation in the Linux kernel through 4.8.2 preserves the setgid bit during a setxattr call, which allows local users to gain group privileges by leveraging the existence of a setgid program with restrictions on execute permissions.
Overview
- CVE ID
- CVE-2016-7097
- Assigner
- secalert@redhat.com
- Vulnerability Status
- Modified
- Published Version
- 2016-10-16T21:59:11
- Last Modified Date
- 2023-02-12T23:25:19
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 1 | OR | 4.8.2 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:L/AC:L/Au:N/C:P/I:P/A:N
- Access Vector
- LOCAL
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- NONE
- Base Score
- 3.6
- Severity
- LOW
- Exploitability Score
- 3.9
- Impact Score
- 4.9
CVSS Version 3
- Version
- 3.0
- Vector String
- CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
- Attack Vector
- LOCAL
- Attack Compatibility
- LOW
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- LOW
- Availability Impact
- NONE
- Base Score
- 4.4
- Base Severity
- MEDIUM
- Exploitability Score
- 1.8
- Impact Score
- 2.5
References
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2016-7097 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7097 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 18:52:02 | Added to TrackCVE | |||
| 2022-12-02 11:45:02 | 2016-10-16T21:59Z | 2016-10-16T21:59:11 | CVE Published Date | updated |
| 2022-12-02 11:45:02 | 2018-01-05T02:31:10 | CVE Modified Date | updated | |
| 2022-12-02 11:45:02 | Modified | Vulnerability Status | updated | |
| 2023-02-02 23:05:37 | 2023-02-02T21:17:20 | CVE Modified Date | updated | |
| 2023-02-02 23:05:38 | The filesystem implementation in the Linux kernel through 4.8.2 preserves the setgid bit during a setxattr call, which allows local users to gain group privileges by leveraging the existence of a setgid program with restrictions on execute permissions. | It was found that when file permissions were modified via chmod and the user modifying them was not in the owning group or capable of CAP_FSETID, the setgid bit would be cleared. Setting a POSIX ACL via setxattr sets the file permissions as well as the new ACL, but doesn't clear the setgid bit in a similar way. This could allow a local user to gain group privileges via certain setgid applications. | Description | updated |
| 2023-02-02 23:05:44 | References | updated | ||
| 2023-02-13 01:06:46 | 2023-02-12T23:25:19 | CVE Modified Date | updated | |
| 2023-02-13 01:06:47 | It was found that when file permissions were modified via chmod and the user modifying them was not in the owning group or capable of CAP_FSETID, the setgid bit would be cleared. Setting a POSIX ACL via setxattr sets the file permissions as well as the new ACL, but doesn't clear the setgid bit in a similar way. This could allow a local user to gain group privileges via certain setgid applications. | The filesystem implementation in the Linux kernel through 4.8.2 preserves the setgid bit during a setxattr call, which allows local users to gain group privileges by leveraging the existence of a setgid program with restrictions on execute permissions. | Description | updated |