CVE-2021-3714 — Sensitive Information Exposure in Kernel

CWE-200 — Sensitive Information ExposureCWE-1236 — Improper Neutralization of Formula Elements in a CSV File8 documents8 sources
Severity
5.9MEDIUMNVD
EPSS
0.1%
top 79.66%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Craftcms CMSLinux KernelRedhat Enterprise Linux
Timeline
PublishedAug 23
Latest updateAug 24

Description

A flaw was found in the Linux kernels memory deduplication mechanism. Previous work has shown that memory deduplication can be attacked via a local exploitation mechanism. The same technique can be used if an attacker can upload page sized files and detect the change in access time from a networked service to determine if the page has been merged.

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:NExploitability: 2.2 | Impact: 3.6

Affected Packages2 packages

▶CVEListV5linux/linux_kernelNot known
▶Packagistcraftcms/cms3.4.0 — 3.7.14

Also affects: Enterprise Linux 6.0, 7.0, 8.0

🔴Vulnerability Details

4
GHSA
GHSA-p9ch-h5p3-4xcq: A flaw was found in the Linux kernels memory deduplication mechanism↗2022-08-24
▶
OSV
CVE-2021-3714: A flaw was found in the Linux kernels memory deduplication mechanism↗2022-08-23
▶
CVEList
CVE-2021-3714: A flaw was found in the Linux kernels memory deduplication mechanism↗2022-08-23
▶
GHSA
CSV Injection Vulnerability↗2021-10-18
▶

📋Vendor Advisories

2
Red Hat
kernel: Remote Page Deduplication Attacks↗2021-11-16
▶
Debian
CVE-2021-3714: linux - A flaw was found in the Linux kernels memory deduplication mechanism. Previous w...↗2021
▶

📄Research Papers

1
arXiv
Remote Memory-Deduplication Attacks↗2021-11-16
▶
CVE-2021-3714 — Sensitive Information Exposure | cvebase