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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-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-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-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-2017-12179

xorg-x11-server: Integer overflow and unvalidated length in (S)ProcXIBarrierReleasePointer

xorg-x11-server before 1.19.5 was vulnerable to integer overflow in (S)ProcXIBarrierReleasePointer functions 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-2017-12180

xorg-x11-server: unvalidated lengths in XFree86 VidModeExtension

xorg-x11-server before 1.19.5 was missing length validation in XFree86 VidModeExtension allowing malicious X client to cause X server to crash or possibly execute arbitrary code.

CVSS 3.0 · 9.8 Critical EPSS 4.5% KEV · Not listed
Vendors
Debian X.org
Products
Debian Linux X Server
CVE-2017-12181

xorg-x11-server: unvalidated lengths in XFree86 DGA extension

xorg-x11-server before 1.19.5 was missing length validation in XFree86 DGA extension 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-2017-12182

xorg-x11-server: unvalidated lengths in XFree86 DRI extension

xorg-x11-server before 1.19.5 was missing length validation in XFree86 DRI extension 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-2017-12183

xorg-x11-server: unvalidated lengths in XFIXES extension

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

CVSS 3.0 · 9.8 Critical EPSS 4.5% KEV · Not listed
Vendors
Debian X.org
Products
Debian Linux X Server
CVE-2017-12184

xorg-x11-server: unvalidated lengths in XINERAMA extension

xorg-x11-server before 1.19.5 was missing length validation in XINERAMA extension 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-2017-12185

xorg-x11-server: unvalidated lengths in MIT-SCREEN-SAVER extension

xorg-x11-server before 1.19.5 was missing length validation in MIT-SCREEN-SAVER extension 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-2017-12186

xorg-x11-server: unvalidated lengths in X-Resource extension

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

CVSS 3.0 · 9.8 Critical EPSS 4.3% 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-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-2017-13723

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-2017-2624

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