Bug 1853385 (CVE-2020-9498) - CVE-2020-9498 guacamole-server: Dangling pointer in RDP static virtual channel handling
Summary: CVE-2020-9498 guacamole-server: Dangling pointer in RDP static virtual channe...
Alias: CVE-2020-9498
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1853386 1853387 1853388
TreeView+ depends on / blocked
Reported: 2020-07-02 14:33 UTC by Michael Kaplan
Modified: 2021-02-16 19:43 UTC (History)
1 user (show)

Fixed In Version:
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Last Closed: 2020-07-02 19:27:37 UTC

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Description Michael Kaplan 2020-07-02 14:33:35 UTC
Apache Guacamole 1.1.0 and older may mishandle pointers involved in
processing data received via RDP static virtual channels. If a user
connects to a malicious or compromised RDP server, a series of
specially-crafted PDUs could result in memory corruption, possibly
allowing arbitrary code to be executed with the privileges of the
running guacd process.

Users of versions of Apache Guacamole 1.1.0 and older that provide
access to untrusted RDP servers should upgrade to 1.2.0.

Comment 1 Michael Kaplan 2020-07-02 14:33:57 UTC
Created guacamole-server tracking bugs for this issue:

Affects: epel-6 [bug 1853387]
Affects: epel-7 [bug 1853388]
Affects: fedora-all [bug 1853386]

Comment 3 Product Security DevOps Team 2020-07-02 19:27:37 UTC
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.

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