{"id":"CVE-2020-10531","details":"An issue was discovered in International Components for Unicode (ICU) for C/C++ through 66.1. An integer overflow, leading to a heap-based buffer overflow, exists in the UnicodeString::doAppend() function in common/unistr.cpp.","aliases":["BIT-node-2020-10531","BIT-node-min-2020-10531"],"modified":"2026-04-11T15:27:39.772520Z","published":"2020-03-12T19:15:13.227Z","related":["ALSA-2020:0902","ALSA-2020:1293","ALSA-2020:1317","SUSE-OU-2024:0647-1","SUSE-SU-2020:0819-1","SUSE-SU-2020:0819-2","SUSE-SU-2020:1180-1","SUSE-SU-2020:1568-1","SUSE-SU-2020:1575-1","SUSE-SU-2023:3563-1","SUSE-SU-2023:3563-2","SUSE-SU-2023:3563-3","openSUSE-SU-2020:0459-1","openSUSE-SU-2024:12116-1","openSUSE-SU-2024:13127-1"],"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6IOHSO6BUKC6I66J5PZOMAGFVJ66ZS57/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X3B5RWJQD5LA45MYLLR55KZJOJ5NVZGP/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2020/03/msg00024.html"},{"type":"ADVISORY","url":"https://www.oracle.com/security-alerts/cpuapr2022.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00004.html"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2020:0738"},{"type":"ADVISORY","url":"https://www.debian.org/security/2020/dsa-4646"},{"type":"ADVISORY","url":"https://www.oracle.com//security-alerts/cpujul2021.html"},{"type":"ADVISORY","url":"https://chromereleases.googleblog.com/2020/02/stable-channel-update-for-desktop_24.html"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202003-15"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4305-1/"},{"type":"REPORT","url":"https://bugs.chromium.org/p/chromium/issues/detail?id=1044570"},{"type":"REPORT","url":"https://unicode-org.atlassian.net/browse/ICU-20958"},{"type":"FIX","url":"https://chromium.googlesource.com/chromium/deps/icu/+/9f4020916eb1f28f3666f018fdcbe6c9a37f0e08"},{"type":"FIX","url":"https://github.com/unicode-org/icu/commit/b7d08bc04a4296982fcef8b6b8a354a9e4e7afca"},{"type":"FIX","url":"https://github.com/unicode-org/icu/pull/971"},{"type":"FIX","url":"https://www.oracle.com/security-alerts/cpujan2021.html"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/nodejs/node","events":[{"introduced":"0"},{"last_affected":"ce3e3c5fe15479475c068482c48eb9cbf1ac9df5"},{"introduced":"0"},{"last_affected":"ce3e3c5fe15479475c068482c48eb9cbf1ac9df5"},{"introduced":"0"},{"last_affected":"ce3e3c5fe15479475c068482c48eb9cbf1ac9df5"},{"introduced":"0"},{"last_affected":"0d8021e5a4cf0a6aa3a700a361f6d42c2894f2ba"},{"introduced":"0"},{"last_affected":"fa9990f3fb5b06fe94e294925246d2c136deb2c2"},{"introduced":"0"},{"last_affected":"cf41627411886000429bde058a6594fb7f6d6d47"},{"introduced":"0"},{"last_affected":"2291e079f22e6df1f7683a05d17364b2ab3bfdab"},{"introduced":"0"},{"last_affected":"5d81e4d677e8a00c2d0d3a23e2bd74bf9f1deb57"},{"introduced":"0"},{"last_affected":"27adbf027f2dd3a75b22518f6825e1a1937059d1"},{"introduced":"cf41627411886000429bde058a6594fb7f6d6d47"},{"last_affected":"4a276cc2a960b3f9a138ac3a99c9249a63b4d472"},{"introduced":"ab4af087e83d91a46354d765306d3543b1d85423"},{"fixed":"23adb548a57db0c56e359265108e7fe71d8b4f73"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"6.0"},{"introduced":"0"},{"last_affected":"6.0"},{"introduced":"0"},{"last_affected":"6.0"},{"introduced":"0"},{"last_affected":"8.0"},{"introduced":"0"},{"last_affected":"9.0"},{"introduced":"0"},{"last_affected":"10.0"},{"introduced":"0"},{"last_affected":"15.1"},{"introduced":"0"},{"last_affected":"14.3.0"},{"introduced":"0"},{"last_affected":"14.4.0"},{"introduced":"10.0.0"},{"last_affected":"10.12.0"},{"introduced":"10.13.0"},{"fixed":"10.21.0"}]}},{"type":"GIT","repo":"https://github.com/unicode-org/icu","events":[{"introduced":"0"},{"last_affected":"5f681ecbc75898a6484217b322f3883b6d1b2049"},{"fixed":"b7d08bc04a4296982fcef8b6b8a354a9e4e7afca"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"66.1"}]}}],"versions":["cldr-32-beta2","last-cvs-commit","last-svn-commit","milestone-59-0-1","milestone-60-0-1","release-59-rc","release-60-rc","release-61-rc","release-62-rc","release-63-rc","release-64-rc","release-65-rc","release-66-1","release-66-preview","release-66-rc","v0.0.1","v0.0.2","v0.0.3","v0.0.4","v0.0.6","v0.1.0","v0.1.1","v0.1.10","v0.1.100","v0.1.101","v0.1.102","v0.1.103","v0.1.104","v0.1.11","v0.1.12","v0.1.13","v0.1.14","v0.1.15","v0.1.16","v0.1.17","v0.1.18","v0.1.19","v0.1.2","v0.1.20","v0.1.21","v0.1.22","v0.1.23","v0.1.24","v0.1.25","v0.1.26","v0.1.27","v0.1.28","v0.1.29","v0.1.3","v0.1.30","v0.1.31","v0.1.32","v0.1.33","v0.1.4","v0.1.5","v0.1.6","v0.1.7","v0.1.8","v0.1.9","v0.1.92","v0.1.93","v0.1.94","v0.1.95","v0.1.96","v0.1.97","v0.1.98","v0.1.99","v0.2.0","v0.3.0","v0.3.1","v0.3.2","v0.3.4","v0.3.5","v0.3.6","v0.3.7","v0.3.8","v0.4.0","v0.5.0","v0.5.1","v0.5.10","v0.5.2","v0.5.3","v0.5.4","v0.5.5","v0.5.5-rc1","v0.5.6","v0.5.7","v0.5.8","v0.5.9","v0.6.0","v0.6.1","v0.7.0","v0.7.2","v0.7.3","v1.0.1","v1.0.1-release","v1.0.2","v1.0.2-release","v1.0.3","v1.0.4","v1.1.0","v1.2.0","v1.3.0","v1.4.1","v1.4.2","v1.4.3","v1.5.0","v1.5.1","v1.6.0","v1.6.1","v1.6.2","v1.6.3","v1.6.4","v1.7.0","v1.7.1","v10.0.0","v10.1.0","v10.10.0","v10.11.0","v10.12.0","v10.13.0","v10.14.0","v10.14.1","v10.14.2","v10.15.0","v10.15.1","v10.15.2","v10.15.3","v10.16.0","v10.16.1","v10.16.2","v10.16.3","v10.17.0","v10.18.0","v10.18.1","v10.19.0","v10.2.0","v10.2.1","v10.20.0","v10.20.1","v10.3.0","v10.4.0","v10.4.1","v10.5.0","v10.6.0","v10.7.0","v10.8.0","v10.9.0","v14.0.0","v14.1.0","v14.2.0","v14.3.0","v14.4.0","v15.0.0","v15.0.1","v15.1.0","v2.0.0","v2.0.1","v2.0.2","v2.1.0","v2.2.0","v2.2.1","v2.3.0","v2.3.1","v2.3.2","v2.3.3","v2.3.4","v2.4.0","v2.5.0","v3.0.0","v6.0.0","v8.0.0","v9.0.0"],"database_specific":{"vanir_signatures":[{"signature_type":"Line","signature_version":"v1","digest":{"threshold":0.9,"line_hashes":["163326310584139620683127306141902484022","53777311359894187782715740876739193896","259529947505127728544220868421245451215","275100226479365140411992926648193383127"]},"target":{"file":"icu4c/source/common/unistr.cpp"},"deprecated":false,"id":"CVE-2020-10531-073eef5e","source":"https://github.com/unicode-org/icu/commit/b7d08bc04a4296982fcef8b6b8a354a9e4e7afca"},{"signature_type":"Function","signature_version":"v1","digest":{"length":783,"function_hash":"311203197988252367781213452935901397736"},"target":{"function":"UnicodeString::doAppend","file":"icu4c/source/common/unistr.cpp"},"deprecated":false,"id":"CVE-2020-10531-52deb174","source":"https://github.com/unicode-org/icu/commit/b7d08bc04a4296982fcef8b6b8a354a9e4e7afca"},{"signature_type":"Function","signature_version":"v1","digest":{"length":1182,"function_hash":"282047263291457392771884626389331655576"},"target":{"function":"UnicodeStringTest::runIndexedTest","file":"icu4c/source/test/intltest/ustrtest.cpp"},"deprecated":false,"id":"CVE-2020-10531-8aefd4ce","source":"https://github.com/unicode-org/icu/commit/b7d08bc04a4296982fcef8b6b8a354a9e4e7afca"},{"signature_type":"Line","signature_version":"v1","digest":{"threshold":0.9,"line_hashes":["281493051491934789897437676517916732519","16536246155701564973448811408738863909","170482884151252957689139896393908258054","244202485545224852526398604846366360242","297837186745196421493934701917911463958"]},"target":{"file":"icu4c/source/test/intltest/ustrtest.cpp"},"deprecated":false,"id":"CVE-2020-10531-e4962e84","source":"https://github.com/unicode-org/icu/commit/b7d08bc04a4296982fcef8b6b8a354a9e4e7afca"},{"signature_type":"Line","signature_version":"v1","digest":{"threshold":0.9,"line_hashes":["176032011631701592212894972723462041867","313180536602387946983383287883265241998","253612880278707994326010847370624889941"]},"target":{"file":"icu4c/source/test/intltest/ustrtest.h"},"deprecated":false,"id":"CVE-2020-10531-efe65e00","source":"https://github.com/unicode-org/icu/commit/b7d08bc04a4296982fcef8b6b8a354a9e4e7afca"}],"vanir_signatures_modified":"2026-04-11T15:27:39Z","unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"80.0.3987.122"}]},{"events":[{"introduced":"0"},{"last_affected":"30"}]},{"events":[{"introduced":"0"},{"last_affected":"31"}]},{"events":[{"introduced":"0"},{"last_affected":"33"}]},{"events":[{"introduced":"0"},{"last_affected":"12.04"}]},{"events":[{"introduced":"0"},{"last_affected":"14.04"}]},{"events":[{"introduced":"0"},{"last_affected":"16.04"}]},{"events":[{"introduced":"0"},{"last_affected":"18.04"}]},{"events":[{"introduced":"0"},{"last_affected":"19.10"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-10531.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}