PT-2016-5241 · Linux+2 · Linux Kernel+2

Halfdog · Published 2016-05-02 · Updated 2022-04-18 · CVE-2016-2853

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 3.x through 4.x

Description The issue concerns the aufs module in the Linux kernel, which fails to properly restrict the mount namespace. This allows local users to escalate privileges by mounting an aufs filesystem over a FUSE filesystem and then executing a specially crafted setuid program.

Recommendations For Linux kernel versions 3.x through 4.x, at the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Improper Privilege Management

Weakness Enumeration

CWE-269

Related Identifiers

ALT-PU-2019-1437

ALT-PU-2019-1506

ALT-PU-2020-1198

ALT-PU-2020-1501

ALT-PU-2020-2410

ALT-PU-2020-2433

ALT-PU-2021-1870

CVE-2016-2853

USN-5343-1

Affected Products

Alt Linux

Linux Kernel

Ubuntu

References · 59

• 🔥 https://exploit-db.com/exploits/41761 · Exploit
• 🔥 http://openwall.com/lists/oss-security/2016/02/24/9 · Exploit
• 🔥 http://halfdog.net/Security/2016/AufsPrivilegeEscalationInUserNamespaces · Exploit
• https://ubuntu.com/security/CVE-2021-3564 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-23134 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-26555 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-39648 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-33034 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2016-2853 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-3612 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-0129 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-25670 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-3573 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2016-2853 · Security Note
• https://ubuntu.com/security/CVE-2020-12655 · Vendor Advisory