PT-2022-11969 · Apache+1 · Apache Guacamole+1

Finn Steglich · Published 2022-01-11 · Updated 2025-01-29 · CVE-2021-43999

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 Apache Guacamole versions 1.2.0 through 1.3.0

Description The issue concerns the improper validation of responses from a SAML identity provider. If SAML support is enabled, a malicious user may assume the identity of another Guacamole user.

Recommendations For Apache Guacamole versions 1.2.0 and 1.3.0, consider disabling SAML support until a patch is available. Restrict access to the SAML identity provider integration to minimize the risk of exploitation.

Fix

Improper Authentication

Weakness Enumeration

CWE-287

Related Identifiers

ALT-PU-2022-2853

ALT-PU-2023-1077

ALT-PU-2025-2021

BIT-GUACAMOLE-2021-43999

BIT-GUACAMOLE-SERVER-2021-43999

CVE-2021-43999

Affected Products

Alt Linux

Apache Guacamole

References · 9

• https://lists.apache.org/thread/4dt9h5mo4o9rxlgxm3rp8wfqdtdjn2z9 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-43999 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-43999 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-43999 · Security Note
• https://osv.dev/vulnerability/BIT-guacamole-server-2021-43999 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-43999 · Security Note
• https://osv.dev/vulnerability/BIT-guacamole-2021-43999 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-43999 · Vendor Advisory
• http://openwall.com/lists/oss-security/2022/01/11/7 · Note