Executive Summary

Informations
Name CVE-2020-10174 First vendor Publication 2020-03-05
Vendor Cve Last vendor Modification 2023-11-07

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:H
Overall CVSS Score 7
Base Score 7 Environmental Score 7
impact SubScore 5.9 Temporal Score 7
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 High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:M/Au:N/C:C/I:C/A:C)
Cvss Base Score 6.9 Attack Range Local
Cvss Impact Score 10 Attack Complexity Medium
Cvss Expoit Score 3.4 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

init_tmp in TeeJee.FileSystem.vala in Timeshift before 20.03 unsafely reuses a preexisting temporary directory in the predictable location /tmp/timeshift. It follows symlinks in this location or uses directories owned by unprivileged users. Because Timeshift also executes scripts under this location, an attacker can attempt to win a race condition to replace scripts created by Timeshift with attacker-controlled scripts. Upon success, an attacker-controlled script is executed with full root privileges. This logic is practically always triggered when Timeshift runs regardless of the command-line arguments used.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-10174

CWE : Common Weakness Enumeration

% Id Name
50 % CWE-362 Race Condition
50 % CWE-59 Improper Link Resolution Before File Access ('Link Following')

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Os 1
Os 3

Sources (Detail)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedora...
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedora...
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedora...
Source Url
MISC https://bugzilla.suse.com/show_bug.cgi?id=1165802
https://github.com/teejee2008/timeshift/commit/335b3d5398079278b8f7094c77bfd1...
https://github.com/teejee2008/timeshift/releases/tag/v20.03
MLIST http://www.openwall.com/lists/oss-security/2020/03/06/3
UBUNTU https://usn.ubuntu.com/4312-1/

Alert History

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Date Informations
2023-11-07 21:37:51
  • Multiple Updates
2022-01-02 00:23:03
  • Multiple Updates
2021-08-05 01:36:16
  • Multiple Updates
2021-07-21 17:24:24
  • Multiple Updates
2021-05-04 13:43:55
  • Multiple Updates
2021-04-22 02:55:53
  • Multiple Updates
2020-05-23 02:34:54
  • First insertion