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almalinuxAlmaLinuxALSA-2024:0018
HistoryJan 02, 2024 - 12:00 a.m.

Important: tigervnc security update

2024-01-0200:00:00
errata.almalinux.org
16
tigervnc
vnc
security
xorg-x11-server
out-of-bounds memory reads
rrchangeoutputproperty
rrchangeproviderproperty
cve-2023-6377
cve-2023-6478
cvss score
acknowledgments
references
unix

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.2 High

AI Score

Confidence

Low

0.273 Low

EPSS

Percentile

96.8%

Virtual Network Computing (VNC) is a remote display system which allows users to view a computing desktop environment not only on the machine where it is running, but from anywhere on the Internet and from a wide variety of machine architectures. TigerVNC is a suite of VNC servers and clients.

Security Fix(es):

  • xorg-x11-server: out-of-bounds memory reads/writes in XKB button actions (CVE-2023-6377)
  • xorg-x11-server: out-of-bounds memory read in RRChangeOutputProperty and RRChangeProviderProperty (CVE-2023-6478)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.2 High

AI Score

Confidence

Low

0.273 Low

EPSS

Percentile

96.8%