Home/CVE/Apache Guacamole 1.3.0 and older may incorrectly include a private tunnel identifier in the non-private details of some
CVE

CVE-2021-41767

Apache Guacamole 1.3.0 and older may incorrectly include a private tunnel identifier in the non-private details of some

Apache Guacamole 1.3.0 and older may incorrectly include a private tunnel identifier in the non-private details of some REST responses. This may allow an authenticated user who already has permission to access a particular connection to read from or interact with another user's active use of that same connection.

MEDIUM · CVSS 6.5 EPSS 0.00574
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-200Exposure of Sensitive Information to an Unauthorized Actor
▤

Affected Products & Versions

1
apache guacamole<= 1.3.0
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighGuacamole Two Users Sharing Session Anomaly
▣

Scoring & Timeline

6.5
MEDIUM · CVSS v3.1 · security@apache.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD11 Jan 2022 · 10:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.openwall.com/lists/oss-security/2022/01/11/6Mailing ListThird Party Advisory
https://lists.apache.org/thread/5l31k4jmzdsfz0xt8osrbl878gb3b7roMailing ListVendor Advisory
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