Current Description
In GNU Coreutils through 8.29, chown-core.c in chown and chgrp does not prevent replacement of a plain file with a symlink during use of the POSIX "-R -L" options, which allows local users to modify the ownership of arbitrary files by leveraging a race condition.
Source:
MITRE
Description Last Modified:
01/03/2018
View Analysis Description
Analysis Description
In GNU Coreutils through 8.29, chown-core.c in chown and chgrp does not prevent replacement of a plain file with a symlink during use of the POSIX "-R -L" options, which allows local users to modify the ownership of arbitrary files by leveraging a race condition.
Source:
MITRE
Description Last Modified:
01/03/2018
Impact
CVSS v3.0 Severity and Metrics:
Base Score:
4.7 MEDIUM
Vector:
AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
(V3 legend)
Impact Score:
3.6
Exploitability Score:
1.0
Attack Vector (AV):
Local
Attack Complexity (AC):
High
Privileges Required (PR):
Low
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
High
Availability (A):
None
CVSS v2.0 Severity and Metrics:
Base Score:
1.9 LOW
Vector:
(AV:L/AC:M/Au:N/C:N/I:P/A:N)
(V2 legend)
Impact Subscore:
2.9
Exploitability Subscore:
3.4
Access Vector (AV):
Local
Access Complexity (AC):
Medium
Authentication (AU):
None
Confidentiality (C):
None
Integrity (I):
Partial
Availability (A):
None
Additional Information:
Allows unauthorized modification
References to Advisories, Solutions, and Tools
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Change History
1 change record found
- show changes
Initial Analysis -
1/19/2018 10:46:46 AM
| Action |
Type |
Old Value |
New Value |
| Added |
CPE Configuration |
|
OR
*cpe:2.3:a:gnu:coreutils:*:*:*:*:*:*:*:* versions up to (including) 8.29 |
| Added |
CVSS V2 |
|
(AV:L/AC:M/Au:N/C:N/I:P/A:N) |
| Added |
CVSS V3 |
|
AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N |
| Added |
CWE |
|
CWE-362 |
| Changed |
Reference Type |
http://lists.gnu.org/archive/html/coreutils/2017-12/msg00045.html No Types Assigned |
http://lists.gnu.org/archive/html/coreutils/2017-12/msg00045.html Exploit, Issue Tracking, Third Party Advisory |