CVE-2020-25211

Public on 2020-09-28
Modified on 2020-11-16
Description
A flaw was found in the Linux kernel. A local attacker, able to inject conntrack netlink configuration, could overflow a local buffer causing crashes or triggering the use of incorrect protocol numbers in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Severity
Important
CVSS v3 Base Score
6.7
See breakdown

Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 kernel 2020-11-09 17:10 ALAS2-2020-1556
Amazon Linux 2 kernel 2020-09-28 20:57 ALAS2-2020-1495
Amazon Linux 2 kernel 2020-11-09 17:10 ALAS2-2020-1556
Amazon Linux 2 kernel 2020-09-28 20:57 ALAS2-2020-1495
Amazon Linux 1 kernel 2020-11-14 01:22 ALAS-2020-1446

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD CVSSv2 3.6 AV:L/AC:L/Au:N/C:N/I:P/A:P
NVD CVSSv3 6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H