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mageiaGentoo FoundationMGASA-2021-0272
HistoryJun 23, 2021 - 8:11 p.m.

Updated guacd packages fix security vulnerabilities

2021-06-2320:11:28
Gentoo Foundation
advisories.mageia.org
32
apache guacamole
security vulnerabilities
guacd
update
session token
rdp servers
virtual channels
disclosure
memory corruption
connection history
user visibility
util-linux
ossp_uuid

CVSS2

6.2

Attack Vector

LOCAL

Attack Complexity

HIGH

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:H/Au:N/C:C/I:C/A:C

CVSS3

6.7

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.001

Percentile

50.6%

Prior to 1.0.0, Apache Guacamole used a cookie for client-side storage of the user’s session token. This cookie lacked the “secure” flag, which could allow an attacker eavesdropping on the network to intercept the user’s session token if unencrypted HTTP requests are made to the same domain (CVE-2018-1340). Apache Guacamole 1.1.0 and older do 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 (CVE-2020-9497). 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 (CVE-2020-9498). Apache Guacamole 1.2.0 and older do not consistently restrict access to connection history based on user visibility. If multiple users share access to the same connection, those users may be able to see which other users have accessed that connection, as well as the IP addresses from which that connection was accessed, even if those users do not otherwise have permission to see other users (CVE-2020-11997). This is an update of guacd to latest version to fix security issues. We also updated util-linux and ossp_uuid to make them co installable as guacd requires ossp_uuid.

CVSS2

6.2

Attack Vector

LOCAL

Attack Complexity

HIGH

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:H/Au:N/C:C/I:C/A:C

CVSS3

6.7

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.001

Percentile

50.6%