PT-2021-17401 · Unknown · Kollectapps

Published 2021-02-18 · Updated 2021-02-26 · CVE-2021-27335

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions KollectApps versions prior to 4.8.16c

Description The issue is related to insecure Java deserialization, which can lead to Remote Code Execution. This is achieved via a ysoserial.payloads.CommonsCollections parameter.

Recommendations For versions prior to 4.8.16c, update to version 4.8.16c or later to resolve the issue. As a temporary workaround, consider restricting the use of Java deserialization to minimize the risk of exploitation.

Exploit

Fix

Deserialization of Untrusted Data

Weakness Enumeration

CWE-502

Related Identifiers

CVE-2021-27335

Affected Products

Kollectapps

References · 5

• 🔥 https://hacked0x90.net/index.php/2021/02/15/kollectapp-insecure-java-deserialization · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-27335 · Security Note
• https://osv.dev/vulnerability/CVE-2021-27335 · Vendor Advisory
• https://t.me/cibsecurity/23820 · Telegram Post
• https://t.me/cvenotify/10568 · Telegram Post