Executive Summary

Informations
Name CVE-2021-20197 First vendor Publication 2021-03-26
Vendor Cve Last vendor Modification 2023-02-12

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Overall CVSS Score 6.3
Base Score 6.3 Environmental Score 6.3
impact SubScore 5.2 Temporal Score 6.3
Exploitabality Sub Score 1
 
Attack Vector Local Attack Complexity High
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact None
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:M/Au:N/C:P/I:P/A:N)
Cvss Base Score 3.3 Attack Range Local
Cvss Impact Score 4.9 Attack Complexity Medium
Cvss Expoit Score 3.4 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

There is an open race window when writing output in the following utilities in GNU binutils version 2.35 and earlier:ar, objcopy, strip, ranlib. When these utilities are run as a privileged user (presumably as part of a script updating binaries across different users), an unprivileged user can trick these utilities into getting ownership of arbitrary files through a symlink.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20197

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-59 Improper Link Resolution Before File Access ('Link Following')

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 13
Application 1
Application 1
Application 1
Os 1
Os 1

Sources (Detail)

Source Url
CONFIRM https://security.netapp.com/advisory/ntap-20210528-0009/
GENTOO https://security.gentoo.org/glsa/202208-30
MISC https://bugzilla.redhat.com/show_bug.cgi?id=1913743
https://sourceware.org/bugzilla/show_bug.cgi?id=26945

Alert History

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Date Informations
2023-09-21 02:10:46
  • Multiple Updates
2023-02-13 00:27:33
  • Multiple Updates
2023-02-03 05:27:41
  • Multiple Updates
2022-09-30 17:27:34
  • Multiple Updates
2022-08-15 17:27:49
  • Multiple Updates
2022-06-03 17:27:22
  • Multiple Updates
2022-03-24 01:51:28
  • Multiple Updates
2021-11-23 12:45:12
  • Multiple Updates
2021-05-28 17:22:57
  • Multiple Updates
2021-05-04 14:08:54
  • Multiple Updates
2021-04-22 03:13:38
  • Multiple Updates
2021-04-01 17:22:56
  • Multiple Updates
2021-03-26 21:23:12
  • First insertion