CVE-2021-42550

MEDIUM

QOS Logback < 1.2.7 - Insecure Deserialization

Title source: rule

Description

In logback version 1.2.7 and prior versions, an attacker with the required privileges to edit configurations files could craft a malicious configuration allowing to execute arbitrary code loaded from LDAP servers.

References (7)

[Vendor Advisory] http://logback.qos.ch/news.html

[Exploit, Third Party Advisory, VDB Entry] http://packetstormsecurity.com/files/167794/Open-Xchange-App-Suite-7.10.x-Cross-Site-Scripting-Command-Injection.html

[Mailing List, Third Party Advisory] http://seclists.org/fulldisclosure/2022/Jul/11

[Third Party Advisory] https://cert-portal.siemens.com/productcert/pdf/ssa-371761.pdf

[Exploit, Third Party Advisory] https://github.com/cn-panda/logbackRceDemo

View Exploit ZIP pw:eip

[Exploit, Issue Tracking, Patch, Third Party Advisory] https://jira.qos.ch/browse/LOGBACK-1591

[Third Party Advisory] https://security.netapp.com/advisory/ntap-20211229-0001/

Scores

CVSS v3 6.6

EPSS 0.0273

EPSS Percentile 85.8%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Classification

CWE

CWE-502

Status published

Affected Products (18)

qos/logback < 1.2.7

qos/logback

redhat/satellite

netapp/cloud_manager

netapp/service_level_manager

... and 3 more

Timeline

Published Dec 16, 2021

Tracked Since Feb 18, 2026