Executive Summary

Informations
Name CVE-2020-27171 First vendor Publication 2021-03-20
Vendor Cve Last vendor Modification 2021-04-08

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H
Overall CVSS Score 6
Base Score 6 Environmental Score 6
impact SubScore 5.2 Temporal Score 6
Exploitabality Sub Score 0.8
 
Attack Vector Local Attack Complexity Low
Privileges Required High User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:L/Au:N/C:P/I:N/A:P)
Cvss Base Score 3.6 Attack Range Local
Cvss Impact Score 4.9 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

An issue was discovered in the Linux kernel before 5.11.8. kernel/bpf/verifier.c has an off-by-one error (with a resultant integer underflow) affecting out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre mitigations and obtain sensitive information from kernel memory, aka CID-10d2bb2e6b1d.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27171

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-193 Off-by-one Error

CPE : Common Platform Enumeration

TypeDescriptionCount
Os 1
Os 3
Os 3358

Sources (Detail)

Source Url
FEDORA https://lists.fedoraproject.org/archives/list/package-announce@lists.fedorapr...
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedorapr...
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedorapr...
MISC http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice...
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.8
https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/patch/?id=10d2bb2...
https://www.openwall.com/lists/oss-security/2021/03/19/3
MLIST http://www.openwall.com/lists/oss-security/2021/03/24/5
https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html

Alert History

If you want to see full details history, please login or register.
0
1
2
3
4
5
6
7
Date Informations
2021-05-04 13:53:16
  • Multiple Updates
2021-04-22 03:04:17
  • Multiple Updates
2021-04-08 09:22:50
  • Multiple Updates
2021-04-06 21:23:13
  • Multiple Updates
2021-03-31 09:23:05
  • Multiple Updates
2021-03-29 09:22:49
  • Multiple Updates
2021-03-26 12:38:52
  • Multiple Updates
2021-03-26 12:34:14
  • First insertion