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CVE-2020-9498

MEDIUMCVSS 6.7/10EPSS 0.74%

Last modified

CVE-2020-9498 is a medium-severity vulnerability rated 6.7/10 on the CVSS scale. 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.. EPSS estimates a 0.74% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
6.7/10

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

EPSS Probability
0.74%

49.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
ApacheGuacamole<= 1.1.0
FedoraprojectFedora32
FedoraprojectFedora33
DebianDebian Linux9.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-9498?
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.
How severe is CVE-2020-9498?
CVE-2020-9498 has a CVSS score of 6.7/10 (MEDIUM severity). The EPSS model estimates a 0.74% probability of exploitation in the next 30 days.
How do I fix CVE-2020-9498?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-9498?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST