CVE-2020-9498

MEDIUM

Apache Guacamole < 1.1.0 - Memory Corruption via RDP Static Virtual Channel

Title source: llm

Description

Apache Guacamole 1.1.0 and older may mishandle pointers involved inprocessing data received via RDP static virtual channels. If a userconnects to a malicious or compromised RDP server, a series ofspecially-crafted PDUs could result in memory corruption, possiblyallowing arbitrary code to be executed with the privileges of therunning guacd process.

References (9)

Core 9

Core References

Mailing List, Third Party Advisory x_refsource_misc

https://lists.apache.org/thread.html/rff824b38ebd2fddc726b816f0e509696b83b9f78979d0cd021ca623b%40%3Cannounce.guacamole.apache.org%3E

Mailing List mailing-list x_refsource_mlist

https://lists.apache.org/thread.html/r26fb170edebff842c74aacdb1333c1338f0e19e5ec7854d72e4680fc%40%3Cannounce.apache.org%3E

Third Party Advisory x_refsource_misc

https://research.checkpoint.com/2020/apache-guacamole-rce/

Third Party Advisory x_refsource_confirm

https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44525

Mailing List, Third Party Advisory mailing-list x_refsource_mlist

https://lists.debian.org/debian-lts-announce/2020/11/msg00010.html

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TVV5K2X4EXSAVUUL7IJ3MUJ3ADWMVSBM/

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WNS7UHBOFV6JHWH5XOEZTE3BREGRSSQ3/

Mailing List mailing-list x_refsource_mlist

https://lists.apache.org/thread.html/r90890afea72a9571d666820b2fe5942a0a5f86be406fa31da3dd0922%40%3Cannounce.apache.org%3E

Mailing List mailing-list x_refsource_mlist

https://lists.apache.org/thread.html/r1125f3044a0946d1e7e6f125a6170b58d413ebd4a95157e4608041c7%40%3Cannounce.apache.org%3E

Scores

CVSS v3 6.7

EPSS 0.0011

EPSS Percentile 28.3%

Attack Vector LOCAL

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

Details

CWE

CWE-787

Status published

Products (4)

apache/guacamole < 1.1.0

debian/debian_linux 9.0

fedoraproject/fedora 32

fedoraproject/fedora 33

Published Jul 02, 2020

Tracked Since Feb 18, 2026