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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.","2021-05-27",9.8,"v3.1","Critical",0.10634,{"cveId":227,"description":228,"publishedDate":229,"cvssScore":222,"cvssVersion":230,"severity":224,"isKev":17,"epssScore":231},"CVE-2018-14600","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.","2018-08-24","v3.0",0.09341,{"cveId":233,"description":234,"publishedDate":229,"cvssScore":222,"cvssVersion":223,"severity":224,"isKev":17,"epssScore":235},"CVE-2018-14599","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.",0.04799,{"cveId":237,"description":238,"publishedDate":239,"cvssScore":240,"cvssVersion":241,"severity":224,"isKev":17,"epssScore":242},"CVE-2007-1667","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.","2007-03-24",9.3,"v2",0.04613,{"cveId":244,"description":245,"publishedDate":246,"cvssScore":222,"cvssVersion":230,"severity":224,"isKev":17,"epssScore":247},"CVE-2016-7942","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.","2016-12-13",0.04459,{"cveId":249,"description":250,"publishedDate":246,"cvssScore":222,"cvssVersion":230,"severity":224,"isKev":17,"epssScore":247},"CVE-2016-7943","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.",{"cveId":252,"description":253,"publishedDate":254,"cvssScore":255,"cvssVersion":241,"severity":256,"isKev":17,"epssScore":257},"CVE-2013-7439","Multiple off-by-one errors in the (1) MakeBigReq and (2) SetReqLen macros in include\u002FX11\u002FXlibint.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.","2015-04-16",7.5,"High",0.04251,{"cveId":259,"description":260,"publishedDate":229,"cvssScore":255,"cvssVersion":230,"severity":256,"isKev":17,"epssScore":261},"CVE-2018-14598","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).",0.04229,{"cveId":263,"description":264,"publishedDate":265,"cvssScore":255,"cvssVersion":223,"severity":256,"isKev":17,"epssScore":266},"CVE-2023-3138","A vulnerability was found in libX11. The security flaw occurs because the functions in src\u002FInitExt.c in libX11 do not check that the values provided for the Request, Event, or Error IDs are within the bounds of the arrays that those functions write to, using those IDs as array indexes. They trust that they were called with values provided by an Xserver adhering to the bounds specified in the X11 protocol, as all X servers provided by X.Org do. As the protocol only specifies a single byte for these values, an out-of-bounds value provided by a malicious server (or a malicious proxy-in-the-middle) can only overwrite other portions of the Display structure and not write outside the bounds of the Display structure itself, possibly causing the client to crash with this memory corruption.","2023-06-28",0.01656,{"cveId":268,"description":269,"publishedDate":12,"cvssScore":270,"cvssVersion":223,"severity":271,"isKev":17,"epssScore":272},"CVE-2023-43785","A vulnerability was found in libX11 due to a boundary condition within the _XkbReadKeySyms() function. 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