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CVE

CVE-2016-1576

The overlayfs implementation in the Linux kernel through 4.5.2 does not properly restrict the mount namespace, which all

The overlayfs implementation in the Linux kernel through 4.5.2 does not properly restrict the mount namespace, which allows local users to gain privileges by mounting an overlayfs filesystem on top of a FUSE filesystem, and then executing a crafted setuid program.

HIGH · CVSS 7.8 EPSS 0.00352
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
▤

Affected Products & Versions

4
canonical ubuntu coreall versions
canonical ubuntu linuxall versions
canonical ubuntu touchall versions
linux kernel<= 4.5.2
⚠

Public Exploits & PoCs

2
localUbuntu 15.10 - 'USERNS ' Overlayfs Over Fuse Privilege Escalation2016-11-22
pocwww.halfdog.net · OverlayfsOverFusePrivilegeEscalationwww.halfdog.net
▣

Scoring & Timeline

7.8
HIGH · CVSS v3.1 · security@ubuntu.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD02 May 2016 · 10:59 AM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

7
usnUSN-2910-1
usnUSN-2909-1
usnUSN-2908-1
usnUSN-2908-2
usnUSN-2908-3
🔗

References & Sources

7
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e9f57ebcba563e0cd532926cab83c92bb4d79360Mailing ListPatchVendor Advisory
http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-1576.htmlThird Party Advisory
http://www.openwall.com/lists/oss-security/2016/02/24/8Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/10/18/1Mailing ListThird Party Advisory
https://bugs.launchpad.net/bugs/1535150Third Party Advisory
https://launchpadlibrarian.net/235300093/0005-overlayfs-Be-more-careful-about-copying-up-sxid-file.patchMailing ListPatchThird Party Advisory
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