PT-2016-4867 · Linux+2 · Linux Kernel+2

Halfdog · Published 2016-02-22 · Updated 2022-04-18 · CVE-2016-1575

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.5.3

Description The issue concerns the overlayfs implementation in the Linux kernel, which fails to properly maintain POSIX ACL xattr data. This allows local users to gain privileges by exploiting a group-writable setgid directory.

Recommendations For versions prior to 4.5.3, update to version 4.5.3 or later to resolve the issue.

Exploit

Fix

Improper Privilege Management

Weakness Enumeration

CWE-269

Related Identifiers

ALT-PU-2016-1470

ALT-PU-2017-1330

CVE-2016-1575

USN-2907-1

USN-2907-2

USN-2908-1

USN-2908-2

USN-2908-3

USN-2909-1

USN-2909-2

USN-2910-1

USN-2910-2

Affected Products

Alt Linux

Linux Kernel

Ubuntu

References · 39

• 🔥 http://halfdog.net/Security/2016/UserNamespaceOverlayfsXattrSetgidPrivilegeEscalation · Exploit
• 🔥 https://exploit-db.com/exploits/41762 · Exploit
• https://ubuntu.com/security/CVE-2016-1575 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2016-1575 · Security Note
• https://osv.dev/vulnerability/USN-2909-2 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-2909-2 · Vendor Advisory
• https://ubuntu.com/security/CVE-2013-4312 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-2907-2 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2016-1575 · Security Note
• https://ubuntu.com/security/CVE-2015-8569 · Vendor Advisory
• https://ubuntu.com/security/CVE-2015-8543 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2016-1575 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-2910-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-2907-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2016-1575 · Vendor Advisory