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The fix for CVE-2018-15127 was incomplete.","status":"published","published":"2019-01-30T18:29:00.41Z","modified":"2026-06-17T01:53:23.85Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:04:53.728218Z"}],"osv":[{"id":"CVE-2018-20749","description":"LibVNC before 0.9.12 contains a heap out-of-bounds write vulnerability in libvncserver/rfbserver.c. The fix for CVE-2018-15127 was incomplete.","status":"published","published":"2019-01-30T18:29:00.41Z","modified":"2026-10-20T10:49:54.63046001Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:09.145458Z"},{"id":"DEBIAN-CVE-2018-20749","description":"LibVNC before 0.9.12 contains a heap out-of-bounds write vulnerability in libvncserver/rfbserver.c. The fix for CVE-2018-15127 was incomplete.","status":"published","published":"2019-01-30T18:29:00.41Z","modified":"2026-10-23T18:03:05.334645182Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:45:30.867575Z"},{"id":"UBUNTU-CVE-2018-20749","description":"LibVNC before 0.9.12 contains a heap out-of-bounds write vulnerability in libvncserver/rfbserver.c. The fix for CVE-2018-15127 was incomplete.","status":"published","published":"2019-01-30T00:00:00Z","modified":"2026-04-22T11:52:16.773498Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"},{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:54:17.91743Z"},{"id":"DLA-1652-1","title":"libvncserver - security update","status":"published","published":"2019-01-31T00:00:00Z","modified":"2026-03-09T01:19:00.55904Z","updated_at":"2026-11-02T15:46:09.777694Z"},{"id":"DLA-1979-1","title":"italc - security update","status":"published","published":"2019-10-30T00:00:00Z","modified":"2026-03-09T01:18:20.937176Z","updated_at":"2026-11-02T15:46:10.227108Z"},{"id":"MGASA-2020-0435","title":"Updated italc packages fix security vulnerabilities","description":"An issue was discovered in LibVNCServer through 0.9.11.\nrfbProcessClientNormalMessage() in rfbserver.c does not sanitize msg.cct.length,\nleading to access to uninitialized and potentially sensitive data or possibly\nunspecified other impact (e.g., an integer overflow) via specially crafted\nVNC packets. (CVE-2018-7225)\n\nLibVNC before commit 502821828ed00b4a2c4bef90683d0fd88ce495de contains heap\nout-of-bound write vulnerability in server code of file transfer extension that\ncan result remote code execution. (CVE-2018-15127)\n\nLibVNC before commit a83439b9fbe0f03c48eb94ed05729cb016f8b72f contains multiple\nheap out-of-bound write vulnerabilities in VNC client code that can result\nremote code execution. (CVE-2018-20019)\n\nLibVNC before commit 7b1ef0ffc4815cab9a96c7278394152bdc89dc4d contains heap\nout-of-bound write vulnerability inside structure in VNC client code that can\nresult remote code execution. (CVE-2018-20020)\n\nLibVNC before commit c3115350eb8bb635d0fdb4dbbb0d0541f38ed19c contains a CWE-835:\nInfinite loop vulnerability in VNC client code. Vulnerability allows attacker\nto consume excessive amount of resources like CPU and RAM. (CVE-2018-20021)\n\nLibVNC before 2f5b2ad1c6c99b1ac6482c95844a84d66bb52838 contains multiple\nweaknesses CWE-665: Improper Initialization vulnerability in VNC client code\nthat allows attacker to read stack memory and can be abuse for information\ndisclosure. Combined with another vulnerability, it can be used to leak stack\nmemory layout and in bypassing ASLR. (CVE-2018-20022)\n\nLibVNC before 8b06f835e259652b0ff026898014fc7297ade858 contains CWE-665:\nImproper Initialization vulnerability in VNC Repeater client code that allows\nattacker to read stack memory and can be abuse for information disclosure.\nCombined with another vulnerability, it can be used to leak stack memory layout\nand in bypassing ASLR. (CVE-2018-20023)\n\nLibVNC before commit 4a21bbd097ef7c44bb000c3bd0907f96a10e4ce7 contains null\npointer dereference in VNC client code that can result DoS. (CVE-2018-20024)\n\nLibVNC before 0.9.12 contains multiple heap out-of-bounds write vulnerabilities\nin libvncclient/rfbproto.c. The fix for CVE-2018-20019 was incomplete.\n(CVE-2018-20748)\n\nLibVNC before 0.9.12 contains a heap out-of-bounds write vulnerability in\nlibvncserver/rfbserver.c. The fix for CVE-2018-15127 was incomplete.\n(CVE-2018-20749)\n\nLibVNC through 0.9.12 contains a heap out-of-bounds write vulnerability in\nlibvncserver/rfbserver.c. The fix for CVE-2018-15127 was incomplete.\n(CVE-2018-20750)\n\nLibVNC commit before d01e1bb4246323ba6fcee3b82ef1faa9b1dac82a contains a \nmemory leak (CWE-655) in VNC server code, which allow an attacker to read\nstack memory and can be abused for information disclosure. Combined with\nanother vulnerability, it can be used to leak stack memory and bypass ASLR.\nThis attack appear to be exploitable via network connectivity.\n(CVE-2019-15681)\n","status":"published","published":"2020-11-23T19:51:37Z","modified":"2026-04-16T04:42:45.007668168Z","updated_at":"2026-11-02T15:49:41.509337Z"},{"id":"openSUSE-SU-2019:0196-1","title":"Security update for LibVNCServer","description":"This update for LibVNCServer fixes the following issues:\n\nSecurity issues fixed:\n\n- CVE-2018-20749: Fixed a heap out of bounds write vulnerability in rfbserver.c (bsc#1123828)\n- CVE-2018-20750: Fixed a heap out of bounds write vulnerability in rfbserver.c (bsc#1123832)\n- CVE-2018-20748: Fixed multiple heap out-of-bound writes in VNC client code (bsc#1123823)\n\nThis update was imported from the SUSE:SLE-15:Update update project.","status":"published","published":"2019-03-23T11:00:00Z","modified":"2026-02-04T03:30:09.359295Z","updated_at":"2026-11-02T16:58:30.39372Z"},{"id":"openSUSE-SU-2024:10598-1","title":"LibVNCServer-devel-0.9.13-3.1 on GA media","description":"These are all security issues fixed in the LibVNCServer-devel-0.9.13-3.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T03:15:49.041318Z","updated_at":"2026-11-02T16:58:34.487567Z"},{"id":"SUSE-SU-2019:0283-1","title":"Security update for LibVNCServer","description":"This update for LibVNCServer fixes the following issues:\n\nSecurity issues fixed:\n\n- CVE-2018-20749: Fixed a heap out of bounds write vulnerability in rfbserver.c (bsc#1123828)\n- CVE-2018-20750: Fixed a heap out of bounds write vulnerability in rfbserver.c (bsc#1123832)\n- CVE-2018-20748: Fixed multiple heap out-of-bound writes in VNC client code (bsc#1123823)\n","status":"published","published":"2019-02-07T12:15:10Z","modified":"2026-02-04T04:17:20.939468Z","updated_at":"2026-11-02T15:53:45.926331Z"},{"id":"SUSE-SU-2019:0313-1","title":"Security update for LibVNCServer","description":"This update for LibVNCServer fixes the following issues:\n\t  \nSecurity issues fixed:\n\n- CVE-2018-20749: Fixed a heap out of bounds write vulnerability in rfbserver.c (bsc#1123828)\n- CVE-2018-20750: Fixed a heap out of bounds write vulnerability in rfbserver.c (bsc#1123832)\n- CVE-2018-20748: Fixed multiple heap out-of-bound writes in VNC client code (bsc#1123823)  \n","status":"published","published":"2019-02-09T08:39:11Z","modified":"2026-02-04T02:49:30.691666Z","updated_at":"2026-11-02T15:53:45.926331Z"},{"id":"SUSE-SU-2019:0313-2","title":"Security update for LibVNCServer","description":"This update for LibVNCServer fixes the following issues:\n\t  \nSecurity issues fixed:\n\n- CVE-2018-20749: Fixed a heap out of bounds write vulnerability in rfbserver.c (bsc#1123828)\n- CVE-2018-20750: Fixed a heap out of bounds write vulnerability in rfbserver.c (bsc#1123832)\n- CVE-2018-20748: Fixed multiple heap out-of-bound writes in VNC client code (bsc#1123823)  \n","status":"published","published":"2019-04-29T05:45:01Z","modified":"2026-02-04T02:46:12.711326Z","updated_at":"2026-11-02T15:53:45.926331Z"},{"id":"SUSE-SU-2019:13952-1","title":"Security update for LibVNCServer","description":"This update for LibVNCServer fixes the following issues:\n\nSecurity issues fixed:\n\n- CVE-2018-20749: Fixed a heap out of bounds write vulnerability in rfbserver.c (bsc#1123828)\n- CVE-2018-20750: Fixed a heap out of bounds write vulnerability in rfbserver.c (bsc#1123832)\n- CVE-2018-20748: Fixed multiple heap out-of-bound writes in VNC client code (bsc#1123823)\n","status":"published","published":"2019-02-12T12:59:33Z","modified":"2026-02-04T03:05:48.227996Z","updated_at":"2026-11-02T15:53:46.44301Z"},{"id":"USN-3877-1","title":"libvncserver vulnerabilities","description":"It was discovered that LibVNCServer incorrectly handled certain operations.\nA remote attacker able to connect to applications using LibVNCServer could\npossibly use this issue to obtain sensitive information, cause a denial of\nservice, or execute arbitrary code.\n","status":"published","published":"2019-01-31T19:09:23Z","modified":"2026-04-27T15:33:05.447679096Z","updated_at":"2026-11-02T16:58:14.019824Z"},{"id":"USN-4547-1","title":"italc vulnerabilities","description":"It was discovered that an information disclosure vulnerability existed in the\nLibVNCServer vendored in iTALC when sending a ServerCutText message. An\nattacker could possibly use this issue to expose sensitive information.\n(CVE-2019-15681)\n\nIt was discovered that the LibVNCServer and LibVNCClient vendored in iTALC\nincorrectly handled certain packet lengths. A remote attacker could possibly\nuse this issue to obtain sensitive information, cause a denial of service, or\nexecute arbitrary code.\n(CVE-2018-15127 CVE-2018-20019, CVE-2018-20020, CVE-2018-20021, CVE-2018-20022,\nCVE-2018-20023, CVE-2018-20024, CVE-2018-20748, CVE-2018-20749, CVE-2018-20750,\nCVE-2018-7225, CVE-2019-15681)\n\n","status":"published","published":"2020-09-28T16:07:15Z","modified":"2026-04-27T15:48:47.189892546Z","updated_at":"2026-11-02T16:58:15.159055Z"},{"id":"USN-4587-1","title":"italc vulnerabilities","description":"Nicolas Ruff discovered that iTALC had buffer overflows, divide-by-zero errors\nand didn't check malloc return values. A remote attacker could use these issues\nto cause a denial of service or possibly execute arbitrary code.\n(CVE-2014-6051, CVE-2014-6052, CVE-2014-6053, CVE-2014-6054, CVE-2014-6055)\n\nJosef Gajdusek discovered that iTALC had heap-based buffer overflow\nvulnerabilities. A remote attacker could used these issues to cause a denial of\nservice or possibly execute arbitrary code. (CVE-2016-9941, CVE-2016-9942)\n\nIt was discovered that iTALC had an out-of-bounds write, multiple heap\nout-of-bounds writes, an infinite loop, improper initializations, and null\npointer vulnerabilities. A remote attacker could used these issues to cause a\ndenial of service or possibly execute arbitrary code. (CVE-2018-15127,\nCVE-2018-20019, CVE-2018-20020, CVE-2018-20021, CVE-2018-20022, CVE-2018-20023,\nCVE-2018-20024, CVE-2018-20748, CVE-2018-20749, CVE-2018-20750, CVE-2018-7225,\nCVE-2019-15681)\n","status":"published","published":"2020-10-20T16:35:20Z","modified":"2026-04-27T15:48:42.890842055Z","updated_at":"2026-11-02T16:58:15.159055Z"}]}}