CVE-2017-12178

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...

Buffer overflow

In the pcfGetProperties function in bitmap/pcfread.c in libXfont through 1.5.2 and 2.x before 2.0.2, a missing boundary check for PCF files could be used by local attackers authenticated to an Xserver for a buffer over-read, for information disclosure or a crash of the X server...

CVE-2017-13722

In the pcfGetProperties function in bitmap/pcfread.c in libXfont through 1.5.2 and 2.x before 2.0.2, a missing boundary check for PCF files could be used by local attackers authenticated to an Xserver for a buffer over-read, for information disclosure or a crash of the X server...

DEBIAN-CVE-2017-13722

In the pcfGetProperties function in bitmap/pcfread.c in libXfont through 1.5.2 and 2.x before 2.0.2, a missing boundary check for PCF files could be used by local attackers authenticated to an Xserver for a buffer over-read, for information disclosure or a crash of the X server...

CVE-2017-13722

In the pcfGetProperties function in bitmap/pcfread.c in libXfont through 1.5.2 and 2.x before 2.0.2, a missing boundary check for PCF files could be used by local attackers authenticated to an Xserver for a buffer over-read, for information disclosure or a crash of the X server...

CVE-2017-13722

CVE-2017-13722 affects libXfont (and libXfont2) prior to versions 2.0.2 and 1.5.3 respectively. The issue arises in the PCF font handling: in bitmap/pcfread.c within pcfGetProperties a missing boundary check on PCF files allows a local, authenticated attacker to induce a buffer over-read, leading...

CVE-2017-13722

In the pcfGetProperties function in bitmap/pcfread.c in libXfont through 1.5.2 and 2.x before 2.0.2, a missing boundary check for PCF files could be used by local attackers authenticated to an Xserver for a buffer over-read, for information disclosure or a crash of the X server...

CVE-2017-13723

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...

Design/Logic Flaw

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...

Session fixation

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...

CVE-2017-13721

CVE-2017-13721 affects X.Org Server (xserver/xorg-server) prior to 1.19.4. The issue arises in ProcShmCreateSegment: a shmseg resource id can belong to a non-existing client, causing X server aborts with FatalError or overwriting another client’s segment. This can enable a local attacker to crash...

CVE-2017-13723

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...

CVE-2017-13723

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...

MGASA-2017-0366 Updated x11-server packages fix security vulnerabilities

In Xext/shm, the shmseg resource id can belong to a non-existing client and abort X server with FatalError "client not in use", or overwrite existing segment of another existing client CVE-2017-13721. Generating strings for XKB data used a single shared static buffer, which offered several...

X.Org X Server Local Security Bypass Vulnerability

X.Org X Server is an X Window System display server from the X.Org Foundation. A local security bypass vulnerability exists in X.Org X Server. An attacker could use this vulnerability to bypass certain security restrictions and perform unauthorized operations...

X.Org X Server 'xkbtext.c' Denial of Service Vulnerability

X.Org X Server is an X Window System display server from the X.Org Foundation. A denial of service vulnerability exists in X.Org X Server 'xkbtext.c'. An attacker could exploit this vulnerability to cause a denial of service...

Apple OS X Server Denial of Service And RCE Vulnerabilities (HT208102)

Apple OS X Server is prone to denial of service DoS and remote code execution RCE vulnerabilities. SPDX-FileCopyrightText: 2017 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier:...

Tor Linux Sandbox Breakout Via X11

Tor: Linux sandbox breakout via X11 From inside the Linux sandbox described in https://blog.torproject.org/blog/tor-browser-70-released, it is still possible to talk to the X server without any restrictions. This means that a compromised browser can e.g. use the XTEST X protocol extension at...

LXDM Security Bypass Vulnerability

LXDM is a lightweight display manager product for the LXDE desktop environment. A security vulnerability exists in versions of LXDM prior to 0.5.2 that stems from the program failing to start the X server with the '-auth' parameter. A local attacker can exploit this vulnerability to bypass...

BSA-2017-374

Security Advisory ID : BSA-2017-374 Component : Linux Kernel Revision : 2.0: Interim The doanonymouspage function in mm/memory.c in the Linux kernel before 2.6.27.52, 2.6.32.x before 2.6.32.19, 2.6.34.x before 2.6.34.4, and 2.6.35.x before 2.6.35.2 does not properly separate the stack and the hea...