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Apache Guacamole Race Condition vulnerability

High severity GitHub Reviewed Published May 14, 2022 to the GitHub Advisory Database • Updated Jan 29, 2023

Package

maven org.apache.guacamole:guacamole-common (Maven)

Affected versions

>= 0.9.5, < 0.9.11-incubating

Patched versions

0.9.11-incubating

Description

A race condition in Guacamole's terminal emulator in versions 0.9.5 through 0.9.10-incubating could allow writes of blocks of printed data to overlap. Such overlapping writes could cause packet data to be misread as the packet length, resulting in the remaining data being written beyond the end of a statically-allocated buffer.

References

Published by the National Vulnerability Database Jan 18, 2018
Published to the GitHub Advisory Database May 14, 2022
Reviewed Nov 8, 2022
Last updated Jan 29, 2023

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS score

0.162%
(54th percentile)

Weaknesses

CVE ID

CVE-2017-3158

GHSA ID

GHSA-3vv3-585q-wv6x

Source code

No known source code
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