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CVE-2020-25211

Public on 2020-09-09
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
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CVSS v3 Base Score
6.7
See breakdown
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Affected Packages

Platform Package Release Date Advisory
Amazon Linux 1 kernel 2020-11-14 01:22 ALAS-2020-1446
Amazon Linux 2 - Core kernel 2020-09-28 20:57 ALAS2-2020-1495
Amazon Linux 2 - Core kernel 2020-11-09 17:10 ALAS2-2020-1556
Amazon Linux 2 - Kernel-5.4 Extra kernel 2022-01-20 19:33 ALAS2KERNEL-5.4-2022-017
Amazon Linux 2 - Livepatch Extra kernel-livepatch-4.14.192-147.314 2020-12-02 19:27 ALAS2LIVEPATCH-2020-028
Amazon Linux 2 - Livepatch Extra kernel-livepatch-4.14.193-149.317 2020-12-02 19:27 ALAS2LIVEPATCH-2020-029

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 CVSSv3 6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
NVD CVSSv2 3.6 AV:L/AC:L/Au:N/C:N/I:P/A:P