6.6 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L
0.001 Low
EPSS
Percentile
29.5%
If an admin account has already been compromised by an attacker, the LESS
parser can be exploited to read sensitive files on the server through the use of path traversal techniques.
An attacker can achieve this by providing an absolute path to a sensitive file in the custom LESS
setting, which the LESS
parser will then read. For example, an attacker could use the following code to read the contents of the /etc/passwd
file:
@import (inline) '/etc/passwd';
.test {
content: data-uri('/etc/passwd');
}
The vulnerability has been addressed in version 1.7
. Users should upgrade to this version to mitigate the vulnerability.
Users can mitigate the vulnerability by ensuring that their admin accounts are secured with strong passwords and other best practices for account security. Additionally, users can limit the exposure of sensitive files on the server by implementing appropriate file permissions and access controls.