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CVE-2020-9497: Information Exposure

July 2, 2020 (updated July 21, 2021)

Apache Guacamole does not properly validate data received from RDP servers via static virtual channels. If a user connects to a malicious or compromised RDP server, specially-crafted PDUs could result in disclosure of information within the memory of the guacd process handling the connection.

References

  • lists.apache.org/thread.html/r066543f0565e97b27c0dfe27e93e8a387b99e1e35764000224ed96e7@%3Cuser.guacamole.apache.org%3E
  • lists.apache.org/thread.html/r181b1d5b1acb31cfa69f41b2c86ed3a2cb0b5bc09c2cbd31e9e7c847@%3Cuser.guacamole.apache.org%3E
  • lists.apache.org/thread.html/r3f071de70ea1facd3601e0fa894e6cadc960627ee7199437b5a56f7f@%3Cannounce.apache.org%3E
  • lists.apache.org/thread.html/r65f75d3d65d1af68141f42071ebb27dda24af3e45570e593c1dbd81f%40%3Cannounce.guacamole.apache.org%3E
  • lists.apache.org/thread.html/r90890afea72a9571d666820b2fe5942a0a5f86be406fa31da3dd0922@%3Cannounce.apache.org%3E
  • nvd.nist.gov/vuln/detail/CVE-2020-9497

Code Behaviors & Features

Detect and mitigate CVE-2020-9497 with GitLab Dependency Scanning

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Affected versions

All versions up to 1.1.0

Fixed versions

  • 1.3.0

Solution

Upgrade to version 1.3.0 or above.

Impact 4.4 MEDIUM

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

Learn more about CVSS

Weakness

  • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

Source file

maven/org.apache.guacamole/guacamole-common/CVE-2020-9497.yml

Spotted a mistake? Edit the file on GitLab.

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