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CVE-2014-8103

xorg-x11-server: out of bounds access due to not validating length or offset values in DRI3 & Present extensions

X.Org Server (aka xserver and xorg-server) 1.15.0 through 1.16.x before 1.16.3 allows remote authenticated users to cause a denial of service (out-of-bounds read or write) or possibly execute arbitrary code via a crafted length or index value to the (1) sproc_dri3_query_version, (2) sproc_dri3_open, (3) sproc_dri3_pixmap_from_buffer, (4) sproc_dri3_buffer_from_pixmap, (5) sproc_dri3_fence_from_fd, (6) sproc_dri3_fd_from_fence, (7) proc_present_query_capabilities, (8) sproc_present_query_version, (9) sproc_present_pixmap, (10) sproc_present_notify_msc, (11) sproc_present_select_input, or (12) sproc_present_query_capabilities function in the (a) DRI3 or (b) Present extension.

CVSS 2.0 · 6.5 Medium EPSS 3.4% KEV · Not listed
Vendors
Redhat X.org
Products
Enterprise Linux X Server
CVE-2015-0255

xorg-x11-server: information leak in the XkbSetGeometry request of X servers

X.Org Server (aka xserver and xorg-server) before 1.16.3 and 1.17.x before 1.17.1 allows remote attackers to obtain sensitive information from process memory or cause a denial of service (crash) via a crafted string length value in a XkbSetGeometry request.

CVSS 2.0 · 6.4 Medium EPSS 4.3% KEV · Not listed
Vendors
Opensuse Redhat X.org
Products
Opensuse Enterprise Linux X Server
CVE-2015-3164

xorg-x11-server: Xwayland allows unconditional open access to display

The authentication setup in XWayland 1.16.x and 1.17.x before 1.17.2 starts the server in non-authenticating mode, which allows local users to read from or send information to arbitrary X11 clients via vectors involving a UNIX socket.

CVSS 2.0 · 3.6 Low EPSS < 1% KEV · Not listed
Vendors
Opensuse X.org
Products
Opensuse X Server Xorg-server
CVE-2020-14362

xorg-x11-server: XRecordRegisterClients integer underflow privilege escalation vulnerability

A flaw was found in X.Org Server before xorg-x11-server 1.20.9. An Integer underflow leading to heap-buffer overflow may lead to a privilege escalation vulnerability. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Canonical Redhat X.org
Products
Ubuntu Linux Enterprise Linux X Server
CVE-2020-14361

xorg-x11-server: XkbSelectEvents integer underflow privilege escalation vulnerability

A flaw was found in X.Org Server before xorg-x11-server 1.20.9. An Integer underflow leading to heap-buffer overflow may lead to a privilege escalation vulnerability. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Canonical Redhat X.org
Products
Ubuntu Linux Enterprise Linux X Server
CVE-2015-3418

xorg-x11-server: divide-by-zero when checking image dimensions

The ProcPutImage function in dix/dispatch.c in X.Org Server (aka xserver and xorg-server) before 1.16.4 allows attackers to cause a denial of service (divide-by-zero and crash) via a zero-height PutImage request.

CVSS 3.0 · 7.5 High EPSS 2.3% KEV · Not listed
Vendors
Redhat X.org
Products
Enterprise Linux X Server
CVE-2020-14347

xorg-x11-server: Leak of uninitialized heap memory from the X server to clients in AllocatePixmap of dix/pixmap.c

A flaw was found in the way xserver memory was not properly initialized. This could leak parts of server memory to the X client. In cases where Xorg server runs with elevated privileges, this could result in possible ASLR bypass. Xorg-server before version 1.20.9 is vulnerable.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Canonical Debian Redhat and 1 more
Products
Ubuntu Linux Debian Linux Enterprise Linux and 1 more
CVE-2020-14346

xorg-x11-server: Integer underflow in the X input extension protocol

A flaw was found in xorg-x11-server before 1.20.9. An integer underflow in the X input extension protocol decoding in the X server may lead to arbitrary access of memory contents. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Canonical Redhat X.org
Products
Ubuntu Linux Enterprise Linux X Server
CVE-2022-2320

xorg-x11-server: out-of-bounds access in ProcXkbSetDeviceInfo request handler of the Xkb extension

A flaw was found in the Xorg-x11-server. The specific flaw exists within the handling of ProcXkbSetDeviceInfo requests. The issue results from the lack of proper validation of user-supplied data, which can result in a memory access past the end of an allocated buffer. This flaw allows an attacker to escalate privileges and execute arbitrary code in the context of root.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Redhat X.org
Products
Enterprise Linux X Server
CVE-2017-10971

xorg-x11-server: Stack overflow in the endianness conversion of X Events

In the X.Org X server before 2017-06-19, a user authenticated to an X Session could crash or execute code in the context of the X Server by exploiting a stack overflow in the endianness conversion of X Events.

CVSS 3.0 · 8.8 High EPSS 3.9% KEV · Not listed
Vendors
X.org
Products
X Server
CVE-2018-14665

xorg-x11-server: Incorrect permission check in Xorg X server allows for privilege escalation

A flaw was found in xorg-x11-server before 1.20.3. An incorrect permission check for -modulepath and -logfile options when starting Xorg. X server allows unprivileged users with the ability to log in to the system via physical console to escalate their privileges and run arbitrary code under root privileges.

CVSS 3.0 · 6.6 Medium EPSS 27.2% KEV · Not listed
Vendors
Canonical Debian Redhat and 1 more
Products
Ubuntu Linux Debian Linux Enterprise Linux and 7 more
CVE-2017-10972

xorg-x11-server: Unitialized data in endianness conversion in the XEvent handling

Uninitialized data in endianness conversion in the XEvent handling of the X.Org X Server before 2017-06-19 allowed authenticated malicious users to access potentially privileged data from the X server.

CVSS 3.0 · 6.5 Medium EPSS 2.3% KEV · Not listed
Vendors
X.org
Products
X Server
CVE-2017-12176

xorg-x11-server: Unvalidated extra length in ProcEstablishConnection

xorg-x11-server before 1.19.5 was missing extra length validation in ProcEstablishConnection function allowing malicious X client to cause X server to crash or possibly execute arbitrary code.

CVSS 3.0 · 9.8 Critical EPSS 4.2% KEV · Not listed
Vendors
Debian X.org
Products
Debian Linux X Server
CVE-2017-12177

xorg-x11-server: Unvalidated variable-length request in ProcDbeGetVisualInfo

xorg-x11-server before 1.19.5 was vulnerable to integer overflow in ProcDbeGetVisualInfo function allowing malicious X client to cause X server to crash or possibly execute arbitrary code.

CVSS 3.0 · 9.8 Critical EPSS 4.4% KEV · Not listed
Vendors
Debian X.org
Products
Debian Linux X Server
CVE-2017-12178

xorg-x11-server: wrong extra length check in ProcXIChangeHierarchy

xorg-x11-server before 1.19.5 had wrong extra length check in ProcXIChangeHierarchy function allowing malicious X client to cause X server to crash or possibly execute arbitrary code.

CVSS 3.0 · 9.8 Critical EPSS 4.4% KEV · Not listed
Vendors
Debian X.org
Products
Debian Linux X Server
CVE-2017-2624

xorg-x11-server: timing attack against MIT Cookie

It was found that xorg-x11-server before 1.19.0 including uses memcmp() to check the received MIT cookie against a series of valid cookies. If the cookie is correct, it is allowed to attach to the Xorg session. Since most memcmp() implementations return after an invalid byte is seen, this causes a time difference between a valid and invalid byte, which could allow an efficient brute force attack.

CVSS 3.0 · 5.9 Medium EPSS < 1% KEV · Not listed
Vendors
Debian X.org
Products
Debian Linux X Server
CVE-2017-13723

xorg-x11-server: Global buffer overflow in xkbtext.c

In X.Org Server (aka xserver and xorg-server) before 1.19.4, a local attacker authenticated to the X server could overflow a global buffer, causing crashes of the X server or potentially other problems by injecting large or malformed XKB related atoms and accessing them via xkbcomp.

CVSS 3.0 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Debian X.org
Products
Debian Linux X Server
CVE-2017-13721

xorg-x11-server: Insufficient validation of shmseg resource id

In X.Org Server (aka xserver and xorg-server) before 1.19.4, an attacker authenticated to an X server with the X shared memory extension enabled can cause aborts of the X server or replace shared memory segments of other X clients in the same session.

CVSS 3.0 · 4.7 Medium EPSS < 1% KEV · Not listed
Vendors
Debian X.org
Products
Debian Linux X Server
CVE-2017-12187

xorg-x11-server: unvalidated lengths in RENDER extension

xorg-x11-server before 1.19.5 was missing length validation in RENDER extension allowing malicious X client to cause X server to crash or possibly execute arbitrary code.

CVSS 3.0 · 9.8 Critical EPSS 3.3% KEV · Not listed
Vendors
Debian X.org
Products
Debian Linux X Server
CVE-2022-46343

xorg-x11-server: ScreenSaverSetAttributes use-after-free

A vulnerability was found in X.Org. This security flaw occurs because the handler for the ScreenSaverSetAttributes request may write to memory after it has been freed. This issue can lead to local privileges elevation on systems where the X server is running privileged and remote code execution for ssh X forwarding sessions.

CVSS 3.1 · 8.8 High EPSS 2.6% KEV · Not listed
Vendors
Debian Fedoraproject Redhat and 1 more
Products
Debian Linux Fedora Enterprise Linux and 1 more