PT-2021-17493 · Learnsite · Learnsite

Raspberryhusky · Published 2021-04-08 · Updated 2022-05-03 · CVE-2021-27522

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Learnsite version 1.2.5.0

Description The issue concerns a remote privilege escalation vulnerability. It is located in the /Manager/index.aspx endpoint through the JudgIsAdmin() function. By modifying the initial letter of the key of a user cookie, an attacker can obtain the key of the administrator cookie.

Recommendations For Learnsite version 1.2.5.0, as a temporary workaround, consider disabling the JudgIsAdmin() function until a patch is available. Restrict access to the /Manager/index.aspx endpoint to minimize the risk of exploitation. Avoid modifying user cookie keys to prevent potential escalation of privileges. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Improper Authentication

Weakness Enumeration

CWE-287

Related Identifiers

CVE-2021-27522

Affected Products

Learnsite

References · 3

• 🔥 https://github.com/WaterCountry/Learnsite/issues/1 · Exploit
• https://osv.dev/vulnerability/CVE-2021-27522 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-27522 · Security Note