Executive Summary

Informations
Name CVE-2020-12656 First vendor Publication 2020-05-05
Vendor Cve Last vendor Modification 2023-11-07

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Overall CVSS Score 5.5
Base Score 5.5 Environmental Score 5.5
impact SubScore 3.6 Temporal Score 5.5
Exploitabality Sub Score 1.8
 
Attack Vector Local Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact None
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:N/I:N/A:P)
Cvss Base Score 2.1 Attack Range Local
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

gss_mech_free in net/sunrpc/auth_gss/gss_mech_switch.c in the rpcsec_gss_krb5 implementation in the Linux kernel through 5.6.10 lacks certain domain_release calls, leading to a memory leak. Note: This was disputed with the assertion that the issue does not grant any access not already available. It is a problem that on unloading a specific kernel module some memory is leaked, but loading kernel modules is a privileged operation. A user could also write a kernel module to consume any amount of memory they like and load that replicating the effect of this bug

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12656

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-401 Failure to Release Memory Before Removing Last Reference ('Memory Leak')

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Os 4
Os 3377
Os 2

Sources (Detail)

Source Url
MISC https://bugzilla.kernel.org/show_bug.cgi?id=206651
SUSE http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html
UBUNTU https://usn.ubuntu.com/4483-1/
https://usn.ubuntu.com/4485-1/

Alert History

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Date Informations
2024-03-12 13:04:20
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2020-12-12 12:28:52
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2020-12-05 12:30:35
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2020-08-07 12:27:55
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2020-08-07 01:28:42
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2020-08-01 12:27:30
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2020-06-13 13:22:44
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2020-05-24 01:31:14
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2020-05-23 02:35:43
  • First insertion