CVE-2023-6377
published 2023-12-13CVE-2023-6377: A flaw was found in xorg-server. Querying or changing XKB button actions such as moving from a touchpad to a mouse can result in out-of-bounds memory reads and…
PriorityP347high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
1.59%
73.0th percentile
A flaw was found in xorg-server. Querying or changing XKB button actions such as moving from a touchpad to a mouse can result in out-of-bounds memory reads and writes. This may allow local privilege escalation or possible remote code execution in cases where X11 forwarding is involved.
Affected
20 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | xorg-server | < xorg-server 2:21.1.7-3+deb12u4 (bookworm) | xorg-server 2:21.1.7-3+deb12u4 (bookworm) |
| debian | xwayland | < xorg-server 2:21.1.7-3+deb12u4 (bookworm) | xorg-server 2:21.1.7-3+deb12u4 (bookworm) |
| msrc | cbl2_xorg-x11-server_1.20.10-5_on_cbl_mariner_2.0 | — | — |
| redhat | enterprise_linux_eus | — | — |
| x.org | x_server | < 21.1.10 | 21.1.10 |
| x.org | xorg-server | >= 0 < 2:1.20.11-1+deb11u10 | 2:1.20.11-1+deb11u10 |
| x.org | xorg-server | >= 0 < 2:21.1.7-3+deb12u4 | 2:21.1.7-3+deb12u4 |
| x.org | xorg-server | >= 0 < 2:21.1.10-1 | 2:21.1.10-1 |
| x.org | xorg-server | >= 0 < 2:21.1.10-1 | 2:21.1.10-1 |
| x.org | xorg-server | >= 0 < 2:1.20.13-1ubuntu1~20.04.12 | 2:1.20.13-1ubuntu1~20.04.12 |
| x.org | xorg-server | >= 0 < 2:21.1.4-2ubuntu1.7~22.04.5 | 2:21.1.4-2ubuntu1.7~22.04.5 |
| x.org | xorg-server | >= 0 < 2:1.18.4-0ubuntu0.12+esm8 | 2:1.18.4-0ubuntu0.12+esm8 |
| x.org | xorg-server | >= 0 < 2:1.19.6-1ubuntu4.15+esm3 | 2:1.19.6-1ubuntu4.15+esm3 |
| x.org | xwayland | < 23.2.3 | 23.2.3 |
| x.org | xwayland | >= 0 < 2:23.2.3-1 | 2:23.2.3-1 |
| x.org | xwayland | >= 0 < 2:23.2.3-1 | 2:23.2.3-1 |
| x.org | xwayland | >= 0 < 2:22.1.1-1ubuntu0.9 | 2:22.1.1-1ubuntu0.9 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
vendor_msrc7.8HIGH
vendor_redhat7.8HIGH
vendor_ubuntu7.8HIGH
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BSD
OpenBSD 7.3 Errata 023: SECURITY FIX
bsd_advisories·2023-12-14·CVSS 7.8
CVE-2023-6377 [HIGH] OpenBSD 7.3 Errata 023: SECURITY FIX
OpenBSD 7.3 Errata 023: SECURITY FIX
023: SECURITY FIX: December 14, 2023
All architectures Fix out of bounds memory accesses in XRandR and XKB X server extensions. CVE-2023-6377 CVE-2023-6478
BSD
OpenBSD 7.4 Errata 010: SECURITY FIX
bsd_advisories·2023-12-14·CVSS 7.8
CVE-2023-6377 [HIGH] OpenBSD 7.4 Errata 010: SECURITY FIX
OpenBSD 7.4 Errata 010: SECURITY FIX
010: SECURITY FIX: December 14, 2023
All architectures Fix out of bounds memory accesses in XRandR and XKB X server extensions. CVE-2023-6377 CVE-2023-6478
Ubuntu
X.Org X Server vulnerabilities
vendor_ubuntu·2023-12-13·CVSS 7.8
CVE-2023-6377 [HIGH] X.Org X Server vulnerabilities
Title: X.Org X Server vulnerabilities
Summary: Several security issues were fixed in X.Org X Server.
Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled XKB
button actions. An attacker could possibly use this issue to cause the X
Server to crash, execute arbitrary code, or escalate privileges.
(CVE-2023-6377)
Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled
memory when processing the RRChangeOutputProperty and
RRChangeProviderProperty APIs. An attacker could possibly use this issue to
cause the X Server to crash, or obtain sensitive information.
(CVE-2023-6478)
Instructions: After a standard system update you need to reboot your computer to make all
the necessary changes.
Red Hat
xorg-x11-server: out-of-bounds memory reads/writes in XKB button actions
vendor_redhat·2023-12-13·CVSS 7.8
CVE-2023-6377 [HIGH] CWE-125 xorg-x11-server: out-of-bounds memory reads/writes in XKB button actions
xorg-x11-server: out-of-bounds memory reads/writes in XKB button actions
A flaw was found in xorg-server. Querying or changing XKB button actions such as moving from a touchpad to a mouse can result in out-of-bounds memory reads and writes. This may allow local privilege escalation or possible remote code execution in cases where X11 forwarding is involved.
A flaw was found in xorg-server. Querying or changing XKB button actions such as moving from a touchpad to a mouse can result in out-of-bounds memory reads and writes. This may allow local privilege escalation or possible remote code execution in cases where X11 forwarding is involved.
Statement: Xorg server does not run with root privileges in Red Hat Enterprise Linux 8 and 9, therefore, Red Hat Enterprise Linux 8 and 9 have been ra
Ubuntu
X.Org X Server vulnerabilities
vendor_ubuntu·2023-12-13·CVSS 7.8
CVE-2023-6478 [HIGH] X.Org X Server vulnerabilities
Title: X.Org X Server vulnerabilities
Summary: Several security issues were fixed in X.Org X Server.
USN-6555-1 fixed several vulnerabilities in X.Org. This update provides
the corresponding update for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.
Original advisory details:
Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled XKB
button actions. An attacker could possibly use this issue to cause the X
Server to crash, execute arbitrary code, or escalate privileges.
(CVE-2023-6377)
Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled
memory when processing the RRChangeOutputProperty and
RRChangeProviderProperty APIs. An attacker could possibly use this issue to
cause the X Server to crash, or obtain sensitive information.
(CVE-2023-6478)
Instructions: Afte
Microsoft
Xorg-x11-server: out-of-bounds memory reads/writes in xkb button actions
vendor_msrc·2023-12-12·CVSS 7.8
CVE-2023-6377 [HIGH] CWE-125 Xorg-x11-server: out-of-bounds memory reads/writes in xkb button actions
Xorg-x11-server: out-of-bounds memory reads/writes in xkb button actions
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
redhat: redhat
Customer Action Required: Yes
Remediation: CBL-Mariner Releases
Refer
Debian
CVE-2023-6377: xorg-server - A flaw was found in xorg-server. Querying or changing XKB button actions such as...
vendor_debian·2023·CVSS 7.8
CVE-2023-6377 [HIGH] CVE-2023-6377: xorg-server - A flaw was found in xorg-server. Querying or changing XKB button actions such as...
A flaw was found in xorg-server. Querying or changing XKB button actions such as moving from a touchpad to a mouse can result in out-of-bounds memory reads and writes. This may allow local privilege escalation or possible remote code execution in cases where X11 forwarding is involved.
Scope: local
bookworm: resolved (fixed in 2:21.1.7-3+deb12u4)
bullseye: resolved (fixed in 2:1.20.11-1+deb11u10)
forky: resolved (fixed in 2:21.1.10-1)
sid: resolved (fixed in 2:21.1.10-1)
trixie: resolved (fixed in 2:21.1.10-1)
GHSA
GHSA-xp6x-8hgv-x5w5: A flaw was found in xorg-server
ghsa_unreviewed·2023-12-13
CVE-2023-6377 [HIGH] CWE-125 GHSA-xp6x-8hgv-x5w5: A flaw was found in xorg-server
A flaw was found in xorg-server. Querying or changing XKB button actions such as moving from a touchpad to a mouse can result in out-of-bounds memory reads and writes. This may allow local privilege escalation or possible remote code execution in cases where X11 forwarding is involved.
OSV
xorg-server, xwayland vulnerabilities
osv·2023-12-13·CVSS 7.8
CVE-2023-6377 [HIGH] xorg-server, xwayland vulnerabilities
xorg-server, xwayland vulnerabilities
Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled XKB
button actions. An attacker could possibly use this issue to cause the X
Server to crash, execute arbitrary code, or escalate privileges.
(CVE-2023-6377)
Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled
memory when processing the RRChangeOutputProperty and
RRChangeProviderProperty APIs. An attacker could possibly use this issue to
cause the X Server to crash, or obtain sensitive information.
(CVE-2023-6478)
OSV
xorg-server vulnerabilities
osv·2023-12-13·CVSS 7.8
CVE-2023-6377 [HIGH] xorg-server vulnerabilities
xorg-server vulnerabilities
USN-6555-1 fixed several vulnerabilities in X.Org. This update provides
the corresponding update for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.
Original advisory details:
Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled XKB
button actions. An attacker could possibly use this issue to cause the X
Server to crash, execute arbitrary code, or escalate privileges.
(CVE-2023-6377)
Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled
memory when processing the RRChangeOutputProperty and
RRChangeProviderProperty APIs. An attacker could possibly use this issue to
cause the X Server to crash, or obtain sensitive information.
(CVE-2023-6478)
OSV
CVE-2023-6377: A flaw was found in xorg-server
osv·2023-12-13·CVSS 7.8
CVE-2023-6377 [HIGH] CVE-2023-6377: A flaw was found in xorg-server
A flaw was found in xorg-server. Querying or changing XKB button actions such as moving from a touchpad to a mouse can result in out-of-bounds memory reads and writes. This may allow local privilege escalation or possible remote code execution in cases where X11 forwarding is involved.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://access.redhat.com/errata/RHSA-2023:7886https://access.redhat.com/errata/RHSA-2024:0006https://access.redhat.com/errata/RHSA-2024:0009https://access.redhat.com/errata/RHSA-2024:0010https://access.redhat.com/errata/RHSA-2024:0014https://access.redhat.com/errata/RHSA-2024:0015https://access.redhat.com/errata/RHSA-2024:0016https://access.redhat.com/errata/RHSA-2024:0017https://access.redhat.com/errata/RHSA-2024:0018https://access.redhat.com/errata/RHSA-2024:0020https://access.redhat.com/errata/RHSA-2024:2169https://access.redhat.com/errata/RHSA-2024:2170https://access.redhat.com/errata/RHSA-2024:2995https://access.redhat.com/errata/RHSA-2024:2996https://access.redhat.com/errata/RHSA-2025:13998https://access.redhat.com/security/cve/CVE-2023-6377https://bugzilla.redhat.com/show_bug.cgi?id=2253291https://gitlab.freedesktop.org/xorg/xserver/-/commit/0c1a93d319558fe3ab2d94f51d174b4f93810afdhttps://lists.x.org/archives/xorg-announce/2023-December/003435.htmlhttp://www.openwall.com/lists/oss-security/2023/12/13/1https://access.redhat.com/errata/RHSA-2023:7886https://access.redhat.com/errata/RHSA-2024:0006https://access.redhat.com/errata/RHSA-2024:0009https://access.redhat.com/errata/RHSA-2024:0010https://access.redhat.com/errata/RHSA-2024:0014https://access.redhat.com/errata/RHSA-2024:0015https://access.redhat.com/errata/RHSA-2024:0016https://access.redhat.com/errata/RHSA-2024:0017https://access.redhat.com/errata/RHSA-2024:0018https://access.redhat.com/errata/RHSA-2024:0020https://access.redhat.com/errata/RHSA-2024:2169https://access.redhat.com/errata/RHSA-2024:2170https://access.redhat.com/errata/RHSA-2024:2995https://access.redhat.com/errata/RHSA-2024:2996https://access.redhat.com/security/cve/CVE-2023-6377https://bugzilla.redhat.com/show_bug.cgi?id=2253291https://gitlab.freedesktop.org/xorg/xserver/-/commit/0c1a93d319558fe3ab2d94f51d174b4f93810afdhttps://lists.debian.org/debian-lts-announce/2023/12/msg00008.htmlhttps://lists.debian.org/debian-lts-announce/2023/12/msg00013.htmlhttps://lists.fedoraproject.org/archives/list/[email protected]/message/6R63Z6GIWM3YUNZRCGFODUXLW3GY2HD6/https://lists.fedoraproject.org/archives/list/[email protected]/message/7PP47YXKM5ETLCYEF6473R3VFCJ6QT2S/https://lists.fedoraproject.org/archives/list/[email protected]/message/IFHV5KCQ2SVOD4QMCPZ5HC6YL44L7YJD/https://lists.fedoraproject.org/archives/list/[email protected]/message/LJDFWDB7EQVZA45XDP7L5WRSRWS6RVRR/https://lists.x.org/archives/xorg-announce/2023-December/003435.htmlhttps://security.gentoo.org/glsa/202401-30https://security.netapp.com/advisory/ntap-20240125-0003/https://www.debian.org/security/2023/dsa-5576
2023-12-13
Published