CVE-2016-2854
AUFS (Ubuntu 15.10) - 'allow_userns' Fuse/Xattr User Namespaces Privilege Escalation
Severity Score
7.8
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
3
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
The aufs module for the Linux kernel 3.x and 4.x does not properly maintain POSIX ACL xattr data, which allows local users to gain privileges by leveraging a group-writable setgid directory.
El módulo aufs para el kernel de Linux 3.x y 4.x no mantiene correctamente datos POSIX ACL xattr, lo que permite a usuarios locales obtener privilegos aprovechando un directorio con permiso de escritura de grupo setgid.
AUFS (Ubuntu 15.10) suffers from an allow_userns fuse/xattr user namespaces privilege escalation vulnerability.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2016-02-19 First Exploit
- 2016-03-06 CVE Reserved
- 2016-05-02 CVE Published
- 2023-03-08 EPSS Updated
- 2024-08-05 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-269: Improper Privilege Management
CAPEC
References (5)
| URL | Tag | Source |
|---|---|---|
| http://www.securityfocus.com/bid/96838 | Third Party Advisory | |
| https://sourceforge.net/p/aufs/mailman/message/34864744 | Mailing List |
| URL | Date | SRC |
|---|---|---|
| https://www.exploit-db.com/exploits/41761 | 2016-02-19 | |
| http://www.halfdog.net/Security/2016/AufsPrivilegeEscalationInUserNamespaces | 2024-08-05 | |
| http://www.openwall.com/lists/oss-security/2016/02/24/9 | 2024-08-05 |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 3.0.0 <= 3.19.8 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.0.0 <= 3.19.8" | - |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.0.0 <= 4.20.15 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.0.0 <= 4.20.15" | - |
Affected
| ||||||