Vulnerabilities (CVE)

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Filtered by product Libx11
Total 11 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2018-14599 5 Canonical, Debian, Fedoraproject and 2 more 7 Ubuntu Linux, Debian Linux, Fedora and 4 more 2023-03-01 7.5 HIGH 9.8 CRITICAL
An issue was discovered in libX11 through 1.6.5. The function XListExtensions in ListExt.c is vulnerable to an off-by-one error caused by malicious server responses, leading to DoS or possibly unspecified other impact.
CVE-2020-14344 4 Canonical, Fedoraproject, Opensuse and 1 more 4 Ubuntu Linux, Fedora, Leap and 1 more 2022-11-28 4.6 MEDIUM 6.7 MEDIUM
An integer overflow leading to a heap-buffer overflow was found in The X Input Method (XIM) client was implemented in libX11 before version 1.6.10. As per upstream this is security relevant when setuid programs call XIM client functions while running with elevated privileges. No such programs are shipped with Red Hat Enterprise Linux.
CVE-2020-14363 2 Fedoraproject, X.org 2 Fedora, Libx11 2021-11-04 4.6 MEDIUM 7.8 HIGH
An integer overflow vulnerability leading to a double-free was found in libX11. This flaw allows a local privileged attacker to cause an application compiled with libX11 to crash, or in some cases, result in arbitrary code execution. The highest threat from this flaw is to confidentiality, integrity as well as system availability.
CVE-2021-31535 2 Fedoraproject, X.org 3 Fedora, Libx11, X Window System 2021-09-23 7.5 HIGH 9.8 CRITICAL
LookupCol.c in X.Org X through X11R7.7 and libX11 before 1.7.1 might allow remote attackers to execute arbitrary code. The libX11 XLookupColor request (intended for server-side color lookup) contains a flaw allowing a client to send color-name requests with a name longer than the maximum size allowed by the protocol (and also longer than the maximum packet size for normal-sized packets). The user-controlled data exceeding the maximum size is then interpreted by the server as additional X protocol requests and executed, e.g., to disable X server authorization completely. For example, if the victim encounters malicious terminal control sequences for color codes, then the attacker may be able to take full control of the running graphical session.
CVE-2018-14598 4 Canonical, Debian, Fedoraproject and 1 more 4 Ubuntu Linux, Debian Linux, Fedora and 1 more 2019-08-06 5.0 MEDIUM 7.5 HIGH
An issue was discovered in XListExtensions in ListExt.c in libX11 through 1.6.5. A malicious server can send a reply in which the first string overflows, causing a variable to be set to NULL that will be freed later on, leading to DoS (segmentation fault).
CVE-2018-14600 3 Canonical, Debian, X.org 3 Ubuntu Linux, Debian Linux, Libx11 2019-08-06 7.5 HIGH 9.8 CRITICAL
An issue was discovered in libX11 through 1.6.5. The function XListExtensions in ListExt.c interprets a variable as signed instead of unsigned, resulting in an out-of-bounds write (of up to 128 bytes), leading to DoS or remote code execution.
CVE-2007-1667 2 Imagemagick, X.org 2 Imagemagick, Libx11 2018-10-16 9.3 HIGH N/A
Multiple integer overflows in (1) the XGetPixel function in ImUtil.c in X.Org libx11 before 1.0.3, and (2) XInitImage function in xwd.c for ImageMagick, allow user-assisted remote attackers to cause a denial of service (crash) or obtain sensitive information via crafted images with large or negative values that trigger a buffer overflow.
CVE-2016-7943 2 Fedoraproject, X.org 2 Fedora, Libx11 2018-09-13 7.5 HIGH 9.8 CRITICAL
The XListFonts function in X.org libX11 before 1.6.4 might allow remote X servers to gain privileges via vectors involving length fields, which trigger out-of-bounds write operations.
CVE-2016-7942 2 Fedoraproject, X.org 2 Fedora, Libx11 2018-09-13 7.5 HIGH 9.8 CRITICAL
The XGetImage function in X.org libX11 before 1.6.4 might allow remote X servers to gain privileges via vectors involving image type and geometry, which triggers out-of-bounds read operations.
CVE-2006-5397 1 X.org 1 Libx11 2017-07-19 2.1 LOW N/A
The Xinput module (modules/im/ximcp/imLcIm.c) in X.Org libX11 1.0.2 and 1.0.3 opens a file for reading twice using the same file descriptor, which causes a file descriptor leak that allows local users to read files specified by the XCOMPOSEFILE environment variable via the duplicate file descriptor.
CVE-2013-7439 3 Canonical, Debian, X.org 4 Ubuntu Linux, Debian Linux, Libx11 and 1 more 2016-10-17 7.5 HIGH N/A
Multiple off-by-one errors in the (1) MakeBigReq and (2) SetReqLen macros in include/X11/Xlibint.h in X11R6.x and libX11 before 1.6.0 allow remote attackers to have unspecified impact via a crafted request, which triggers a buffer overflow.