CVE-2018-16884

A flaw was found in the Linux kernel's NFS41+ subsystem. NFS41+ shares mounted in different network namespaces at the same time can make bc_svc_process() use wrong back-channel IDs and cause a use-after-free vulnerability. Thus a malicious container user can cause a host kernel memory corruption and a system panic. Due to the nature of the flaw, privilege escalation cannot be fully ruled out.

CVSS v3 8.0 HIGH
CVSS v2.0 6.7 MEDIUM

8.0^/10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 2.1 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.7^/10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:A/AC:L/Au:S/C:P/I:P/A:C

Exploitability : 5.1 / Impact : 8.5

Access Vector ADJACENT_NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact COMPLETE

References

Link	Resource
http://www.securityfocus.com/bid/106253	Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2019:1873	Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1891	Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2696	Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2730	Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3309	Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3517	Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0204	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16884	Issue Tracking Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html	Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html	Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html	Mailing List Third Party Advisory
https://patchwork.kernel.org/cover/10733767/	Patch Vendor Advisory
https://patchwork.kernel.org/patch/10733769/	Patch Vendor Advisory
https://support.f5.com/csp/article/K21430012	Third Party Advisory
https://usn.ubuntu.com/3932-1/	Third Party Advisory
https://usn.ubuntu.com/3932-2/	Third Party Advisory
https://usn.ubuntu.com/3980-1/	Third Party Advisory
https://usn.ubuntu.com/3980-2/	Third Party Advisory
https://usn.ubuntu.com/3981-1/	Third Party Advisory
https://usn.ubuntu.com/3981-2/	Third Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.html	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

Configuration 2 (hide)

OR	cpe:2.3:o:redhat:enterprise_linux:7.0:::::::*
	cpe:2.3:o:redhat:enterprise_mrg:2.0:::::::*

Configuration 3 (hide)

cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

Configuration 4 (hide)

OR	cpe:2.3:o:canonical:ubuntu_linux:14.04::::lts:::
	cpe:2.3:o:canonical:ubuntu_linux:16.04::::lts:::

History

No history.

Information

Published : 2018-12-18 22:29

Updated : 2023-08-11 19:12

NVD link : CVE-2018-16884

Mitre link : CVE-2018-16884

CVE.ORG link : CVE-2018-16884

JSON object : View

Products Affected

canonical

ubuntu_linux

redhat

enterprise_mrg
enterprise_linux

linux

linux_kernel

debian

debian_linux

CWE

CWE-416

Use After Free

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Debido a la naturaleza del error, no se puede descartar totalmente un escalado de privilegios."}], "lastModified": "2023-08-11T19:12:44.330", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BF7B0E80-3E3F-4B73-AC57-4D6989EF9805", "versionEndExcluding": "3.16.65", "versionStartIncluding": "3.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AA41D1F8-EFFE-4EC9-B0AE-C5FFE82B6F74", "versionEndExcluding": "3.18.133", "versionStartIncluding": "3.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "03F2AFB8-B8E8-496E-8107-FACE504D851D", "versionEndExcluding": "4.4.171", "versionStartIncluding": "3.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C6FA30C2-06D9-4FC0-A64A-4D30FBF34810", "versionEndExcluding": "4.9.151", "versionStartIncluding": "4.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2AF1D6FF-6D18-4CEB-B3A5-21FCF8A36055", "versionEndExcluding": "4.14.94", "versionStartIncluding": "4.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CD130255-0E04-4A26-94E8-CF4C39A962B1", "versionEndExcluding": "4.19.16", "versionStartIncluding": "4.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FB066CC3-3C28-424B-A71C-352F4947F7FB", "versionEndExcluding": "4.20.3", "versionStartIncluding": "4.20"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "142AD0DD-4CF3-4D74-9442-459CE3347E3A"}, {"criteria": "cpe:2.3:o:redhat:enterprise_mrg:2.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C60FA8B1-1802-4522-A088-22171DCF7A93"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*", "vulnerable": true, "matchCriteriaId": "B5A6F2F3-4894-4392-8296-3B8DD2679084"}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*", "vulnerable": true, "matchCriteriaId": "F7016A2A-8365-4F1A-89A2-7A19F2BCAE5B"}], "operator": "OR"}]}], "sourceIdentifier": "secalert@redhat.com"}

8.0 /10