{"id":"CVE-2017-17484","aliases":["EUVD-2017-8646","GHSA-84mq-mqjx-rfmc","SUSE-SU-2018:1401-1","SUSE-SU-2018:1401-2","SUSE-SU-2018:1602-1"],"status":"published","title":"The ucnv_UTF8FromUTF8 function in ucnv_u8.cpp in International Components for Unicode (ICU) for C...","description":"The ucnv_UTF8FromUTF8 function in ucnv_u8.cpp in International Components for Unicode (ICU) for C/C++ through 60.1 mishandles ucnv_convertEx calls for UTF-8 to UTF-8 conversion, which allows remote attackers to cause a denial of service (stack-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted string, as demonstrated by ZNC.","severity":{"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","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.04481,"percentile":0.91525,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-119"],"published":"2017-12-10T20:00:00Z","modified":"2026-10-24T10:30:54Z","affected":[{"source":"osv","ecosystem":"SUSE:OpenStack Cloud 7","package":"icu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"52.1-8.7.1"}]}],"bundled":8},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Desktop 12 SP3","package":"icu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"52.1-8.7.1"}]}],"bundled":8},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP1","package":"icu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"52.1-8.7.1"}]}],"bundled":8},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP2","package":"icu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"52.1-8.7.1"}]}],"bundled":8},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Software Development Kit 12 SP3","package":"icu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"52.1-8.7.1"}]}],"bundled":8},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server 12-LTSS","package":"icu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"52.1-8.7.1"}]}],"bundled":8},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server 12 SP1-LTSS","package":"icu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"52.1-8.7.1"}]}],"bundled":8},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server 12 SP2-LTSS","package":"icu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"52.1-8.7.1"}]}],"bundled":8},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server 12 SP3","package":"icu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"52.1-8.7.1"}]}],"bundled":8},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP3","package":"icu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"52.1-8.7.1"}]}],"bundled":8},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Workstation Extension 12 SP3","package":"icu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"52.1-8.7.1"}]}],"bundled":8},{"source":"osv","ecosystem":"SUSE:Enterprise Storage 4","package":"icu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"52.1-8.7.1"}]}],"bundled":8},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server 12 SP2-BCL","package":"icu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"52.1-8.7.1"}]}],"bundled":8},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Software Development Kit 11 SP4","package":"icu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0-47.6.1"}]}],"bundled":6},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server 11 SP4","package":"icu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0-47.6.1"}]}],"bundled":6},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 11 SP4","package":"icu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0-47.6.1"}]}],"bundled":6}],"products":[{"vendor":"icu-project","product":"international_components_for_unicode"}],"references":[{"url":"https://ssl.icu-project.org/trac/ticket/13490","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Vendor Advisory","report"]},{"url":"https://ssl.icu-project.org/trac/changeset/40714","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Patch","Vendor Advisory","fix"]},{"url":"https://github.com/znc/znc/issues/1459","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Third Party Advisory","report"]},{"url":"https://ssl.icu-project.org/trac/attachment/ticket/13490/poc.cpp","tags":["x_refsource_MISC","x_transferred","Exploit","Vendor Advisory","evidence"]},{"url":"https://ssl.icu-project.org/trac/ticket/13510","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Vendor Advisory","report"]},{"url":"https://ssl.icu-project.org/trac/changeset/40715","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Vendor Advisory","report"]},{"url":"https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html","tags":["x_refsource_MISC","x_transferred","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-17484"},{"url":"https://github.com/advisories/GHSA-84mq-mqjx-rfmc"},{"url":"https://www.suse.com/support/update/announcement/2018/suse-su-20181401-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1034674","tags":["report"]},{"url":"https://bugzilla.suse.com/1034678","tags":["report"]},{"url":"https://bugzilla.suse.com/1067203","tags":["report"]},{"url":"https://bugzilla.suse.com/1072193","tags":["report"]},{"url":"https://bugzilla.suse.com/1077999","tags":["report"]},{"url":"https://bugzilla.suse.com/1087932","tags":["report"]},{"url":"https://bugzilla.suse.com/929629","tags":["report"]},{"url":"https://bugzilla.suse.com/990636","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2014-8146","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-8147","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-6293","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-14952","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-15422","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-17484","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-7867","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-7868","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2018/suse-su-20181401-2/","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2018/suse-su-20181602-1/","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2017-17484","description":"The ucnv_UTF8FromUTF8 function in ucnv_u8.cpp in International Components for Unicode (ICU) for C/C++ through 60.1 mishandles ucnv_convertEx calls for UTF-8 to UTF-8 conversion, which allows remote attackers to cause a denial of service (stack-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted string, as demonstrated by ZNC.","status":"published","published":"2017-12-10T20:00:00Z","modified":"2024-08-05T20:51:31.622Z","updated_at":"2026-11-02T14:33:18.556155Z"}],"euvd":[{"id":"EUVD-2017-8646","description":"The ucnv_UTF8FromUTF8 function in ucnv_u8.cpp in International Components for Unicode (ICU) for C/C++ through 60.1 mishandles ucnv_convertEx calls for UTF-8 to UTF-8 conversion, which allows remote attackers to cause a denial of service (stack-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted string, as demonstrated by ZNC.","status":"published","published":"2017-12-10T20:00:00Z","modified":"2024-08-05T20:51:31Z","updated_at":"2026-11-03T02:23:09.524502Z"}],"ghsa":[{"id":"GHSA-84mq-mqjx-rfmc","title":"The ucnv_UTF8FromUTF8 function in ucnv_u8.cpp in International Components for Unicode (ICU) for C...","description":"The ucnv_UTF8FromUTF8 function in ucnv_u8.cpp in International Components for Unicode (ICU) for C/C++ through 60.1 mishandles ucnv_convertEx calls for UTF-8 to UTF-8 conversion, which allows remote attackers to cause a denial of service (stack-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted string, as demonstrated by ZNC.","status":"published","published":"2022-05-14T01:07:14Z","modified":"2023-02-02T05:03:06Z","cvss":[{"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"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:51:34.49846Z"}],"nvd":[{"id":"CVE-2017-17484","description":"The ucnv_UTF8FromUTF8 function in ucnv_u8.cpp in International Components for Unicode (ICU) for C/C++ through 60.1 mishandles ucnv_convertEx calls for UTF-8 to UTF-8 conversion, which allows remote attackers to cause a denial of service (stack-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted string, as demonstrated by ZNC.","status":"published","published":"2017-12-10T20:29:00.197Z","modified":"2026-06-17T01:10:51.867Z","cvss":[{"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","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-119"],"updated_at":"2026-11-02T14:04:10.156892Z"}],"osv":[{"id":"CVE-2017-17484","description":"The ucnv_UTF8FromUTF8 function in ucnv_u8.cpp in International Components for Unicode (ICU) for C/C++ through 60.1 mishandles ucnv_convertEx calls for UTF-8 to UTF-8 conversion, which allows remote attackers to cause a denial of service (stack-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted string, as demonstrated by ZNC.","status":"published","published":"2017-12-10T20:29:00.197Z","modified":"2026-10-24T10:30:54.267135017Z","cvss":[{"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":"2026-11-02T15:44:04.853379Z"},{"id":"SUSE-SU-2018:1401-1","title":"Security update for icu","description":"icu was updated to fix two security issues.\n\nThese security issues were fixed:\n- CVE-2014-8147: The resolveImplicitLevels function in common/ubidi.c\n  in the Unicode Bidirectional Algorithm implementation in ICU4C in\n  International Components for Unicode (ICU) used an integer data type\n  that is inconsistent with a header file, which allowed remote attackers\n  to cause a denial of service (incorrect malloc followed by invalid free)\n  or possibly execute arbitrary code via crafted text (bsc#929629).\n- CVE-2014-8146: The resolveImplicitLevels function in common/ubidi.c\n  in the Unicode Bidirectional Algorithm implementation in ICU4C in\n  International Components for Unicode (ICU) did not properly track\n  directionally isolated pieces of text, which allowed remote attackers\n  to cause a denial of service (heap-based buffer overflow) or possibly\n  execute arbitrary code via crafted text (bsc#929629).\n- CVE-2016-6293: The uloc_acceptLanguageFromHTTP function in\n  common/uloc.cpp in International Components for Unicode (ICU) for C/C++\n  did not ensure that there is a '\\0' character at the end of a certain\n  temporary array, which allowed remote attackers to cause a denial of\n  service (out-of-bounds read) or possibly have unspecified other impact\n  via a call with a long httpAcceptLanguage argument (bsc#990636).\n- CVE-2017-7868: International Components for Unicode (ICU) for C/C++\n  2017-02-13 has an out-of-bounds write caused by a heap-based buffer\n  overflow related to the utf8TextAccess function in common/utext.cpp and\n  the utext_moveIndex32* function (bsc#1034674)\n- CVE-2017-7867: International Components for Unicode (ICU) for C/C++\n  2017-02-13 has an out-of-bounds write caused by a heap-based buffer\n  overflow related to the utf8TextAccess function in common/utext.cpp and\n  the utext_setNativeIndex* function (bsc#1034678)\n- CVE-2017-14952: Double free in i18n/zonemeta.cpp in International\n  Components for Unicode (ICU) for C/C++ allowed remote attackers to\n  execute arbitrary code via a crafted string, aka a 'redundant UVector\n  entry clean up function call' issue (bnc#1067203)\n- CVE-2017-17484: The ucnv_UTF8FromUTF8 function in ucnv_u8.cpp\n  in International Components for Unicode (ICU) for C/C++ mishandled\n  ucnv_convertEx calls for UTF-8 to UTF-8 conversion, which allowed remote\n  attackers to cause a denial of service (stack-based buffer overflow\n  and application crash) or possibly have unspecified other impact via a\n  crafted string, as demonstrated by ZNC  (bnc#1072193)\n- CVE-2017-15422: An integer overflow in icu during persian calendar\n  date processing could lead to incorrect years shown (bnc#1077999)\n\n","status":"published","published":"2018-05-23T17:53:04Z","modified":"2026-02-04T04:26:05.827503Z","updated_at":"2026-11-02T15:53:44.972817Z"},{"id":"SUSE-SU-2018:1401-2","title":"Security update for icu","description":"icu was updated to fix two security issues.\n\nThese security issues were fixed:\n- CVE-2014-8147: The resolveImplicitLevels function in common/ubidi.c\n  in the Unicode Bidirectional Algorithm implementation in ICU4C in\n  International Components for Unicode (ICU) used an integer data type\n  that is inconsistent with a header file, which allowed remote attackers\n  to cause a denial of service (incorrect malloc followed by invalid free)\n  or possibly execute arbitrary code via crafted text (bsc#929629).\n- CVE-2014-8146: The resolveImplicitLevels function in common/ubidi.c\n  in the Unicode Bidirectional Algorithm implementation in ICU4C in\n  International Components for Unicode (ICU) did not properly track\n  directionally isolated pieces of text, which allowed remote attackers\n  to cause a denial of service (heap-based buffer overflow) or possibly\n  execute arbitrary code via crafted text (bsc#929629).\n- CVE-2016-6293: The uloc_acceptLanguageFromHTTP function in\n  common/uloc.cpp in International Components for Unicode (ICU) for C/C++\n  did not ensure that there is a '\\0' character at the end of a certain\n  temporary array, which allowed remote attackers to cause a denial of\n  service (out-of-bounds read) or possibly have unspecified other impact\n  via a call with a long httpAcceptLanguage argument (bsc#990636).\n- CVE-2017-7868: International Components for Unicode (ICU) for C/C++\n  2017-02-13 has an out-of-bounds write caused by a heap-based buffer\n  overflow related to the utf8TextAccess function in common/utext.cpp and\n  the utext_moveIndex32* function (bsc#1034674)\n- CVE-2017-7867: International Components for Unicode (ICU) for C/C++\n  2017-02-13 has an out-of-bounds write caused by a heap-based buffer\n  overflow related to the utf8TextAccess function in common/utext.cpp and\n  the utext_setNativeIndex* function (bsc#1034678)\n- CVE-2017-14952: Double free in i18n/zonemeta.cpp in International\n  Components for Unicode (ICU) for C/C++ allowed remote attackers to\n  execute arbitrary code via a crafted string, aka a 'redundant UVector\n  entry clean up function call' issue (bnc#1067203)\n- CVE-2017-17484: The ucnv_UTF8FromUTF8 function in ucnv_u8.cpp\n  in International Components for Unicode (ICU) for C/C++ mishandled\n  ucnv_convertEx calls for UTF-8 to UTF-8 conversion, which allowed remote\n  attackers to cause a denial of service (stack-based buffer overflow\n  and application crash) or possibly have unspecified other impact via a\n  crafted string, as demonstrated by ZNC  (bnc#1072193)\n- CVE-2017-15422: An integer overflow in icu during persian calendar\n  date processing could lead to incorrect years shown (bnc#1077999)\n\n","status":"published","published":"2018-10-18T12:43:53Z","modified":"2026-02-04T02:42:02.22316Z","updated_at":"2026-11-02T15:53:44.972817Z"},{"id":"SUSE-SU-2018:1602-1","title":"Security update for icu","description":"This update for icu fixes the following issues:\n\n- CVE-2016-6293: The uloc_acceptLanguageFromHTTP function in common/uloc.cpp did not ensure that there is a '\\0' character at the end of a certain temporary array, which allows remote attackers to cause a denial of service (out-of-bounds read) or possibly have unspecified other impact via a call with a long httpAcceptLanguage argument. (bsc#990636)\n- CVE-2017-7868: ICU had an out-of-bounds write caused by a heap-based buffer overflow related to the utf8TextAccess function in common/utext.cpp and the utext_moveIndex32* function. (bsc#1034674)\n- CVE-2017-7867: ICU had an out-of-bounds write caused by a heap-based buffer overflow related to the utf8TextAccess function in common/utext.cpp and the utext_setNativeIndex* function. (bsc#1034678)\n- CVE-2017-14952: Double free in i18n/zonemeta.cpp allowed remote attackers to execute arbitrary code via a crafted string, aka a 'redundant UVector entry clean up function call' issue. (bsc#1067203)\n- CVE-2017-17484:The ucnv_UTF8FromUTF8 function in ucnv_u8.cpp mishandled ucnv_convertEx calls for UTF-8 to UTF-8 conversion, which allows remote attackers to cause a denial of service (stack-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted string, as demonstrated by ZNC. (bsc#1072193)\n- CVE-2017-15422: An integer overflow in persian calendar calculation was fixed, which could show wrong years. (bsc#1077999)\n","status":"published","published":"2018-06-08T09:39:04Z","modified":"2026-02-04T04:31:56.232103Z","updated_at":"2026-11-02T15:53:44.972817Z"}]}}