CVE-2016-1575
Ubuntu 14.04/15.10 - User Namespace Overlayfs Xattr SetGID Privilege Escalation
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
2Exploited in Wild
-Decision
Descriptions
The overlayfs implementation in the Linux kernel through 4.5.2 does not properly maintain POSIX ACL xattr data, which allows local users to gain privileges by leveraging a group-writable setgid directory.
La implementación de overlayfs en el kernel de Linux hasta la versión 4.5.2 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.
halfdog discovered that OverlayFS, when mounting on top of a FUSE mount, incorrectly propagated file attributes, including setuid. A local unprivileged attacker could use this to gain privileges. halfdog discovered that OverlayFS in the Linux kernel incorrectly propagated security sensitive extended attributes, such as POSIX ACLs. A local unprivileged attacker could use this to gain privileges. Various other issues were also addressed.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2016-01-12 CVE Reserved
- 2016-02-23 CVE Published
- 2017-11-22 First Exploit
- 2024-08-05 CVE Updated
- 2025-06-10 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-269: Improper Privilege Management
CAPEC
References (7)
| URL | Tag | Source |
|---|---|---|
| http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-1575.html | Third Party Advisory | |
| http://www.openwall.com/lists/oss-security/2016/02/24/7 | Mailing List |
|
| http://www.openwall.com/lists/oss-security/2021/10/18/1 | Mailing List |
|
| https://launchpad.net/bugs/1534961 | Third Party Advisory |
| URL | Date | SRC |
|---|---|---|
| https://www.exploit-db.com/exploits/41762 | 2017-11-22 | |
| http://www.halfdog.net/Security/2016/UserNamespaceOverlayfsXattrSetgidPrivilegeEscalation | 2024-08-05 |
| URL | Date | SRC |
|---|---|---|
| http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e9f57ebcba563e0cd532926cab83c92bb4d79360 | 2022-04-18 |
| 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" | <= 4.5.2 Search vendor "Linux" for product "Linux Kernel" and version " <= 4.5.2" | - |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Core Search vendor "Canonical" for product "Ubuntu Core" | 15.04 Search vendor "Canonical" for product "Ubuntu Core" and version "15.04" | - |
Affected
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| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 12.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "12.04" | lts |
Affected
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| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04" | lts |
Affected
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| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 15.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "15.10" | - |
Affected
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| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04" | lts |
Affected
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| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 16.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.10" | - |
Affected
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| Canonical Search vendor "Canonical" | Ubuntu Touch Search vendor "Canonical" for product "Ubuntu Touch" | 15.04 Search vendor "Canonical" for product "Ubuntu Touch" and version "15.04" | - |
Affected
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