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.
Fix
Patch, vendor advisory and mitigation references on NVD 8
- https://chromium.googlesource.com/chromium/deps/icu/+/9f4020916eb1f28f3666f018fdcbe6c9a37f0e08 Patch, Third Party Advisory
- https://github.com/unicode-org/icu/commit/b7d08bc04a4296982fcef8b6b8a354a9e4e7afca Patch, Third Party Advisory
- https://github.com/unicode-org/icu/pull/971 Issue Tracking, Patch, Third Party Advisory
- https://www.oracle.com/security-alerts/cpujan2021.html Patch, Third Party Advisory
- https://chromium.googlesource.com/chromium/deps/icu/+/9f4020916eb1f28f3666f018fdcbe6c9a37f0e08 Patch, Third Party Advisory
- https://github.com/unicode-org/icu/commit/b7d08bc04a4296982fcef8b6b8a354a9e4e7afca Patch, Third Party Advisory
- https://github.com/unicode-org/icu/pull/971 Issue Tracking, Patch, Third Party Advisory
- https://www.oracle.com/security-alerts/cpujan2021.html Patch, Third Party Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 8.8 · icu-project, redhat, googleNVD modified 2026-10-14 09:17
Affected (CPE criteria) 21
cpe:2.3:a:icu-project:international_components_for_unicode:*:*:*:*:*:c\/c\+\+:*:*cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*cpe:2.3:a:oracle:banking_extensibility_workbench:14.3.0:*:*:*:*:*:*:*cpe:2.3:a:oracle:banking_extensibility_workbench:14.4.0:*:*:*:*:*:*:*cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:*
References 37
- http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00004.html Mailing List, Third Party Advisory
- https://access.redhat.com/errata/RHSA-2020:0738 Third Party Advisory
- https://bugs.chromium.org/p/chromium/issues/detail?id=1044570 Permissions Required, Third Party Advisory
- https://chromereleases.googleblog.com/2020/02/stable-channel-update-for-desktop_24.html Third Party Advisory
- https://chromium.googlesource.com/chromium/deps/icu/+/9f4020916eb1f28f3666f018fdcbe6c9a37f0e08 Patch, Third Party Advisory
- https://github.com/unicode-org/icu/commit/b7d08bc04a4296982fcef8b6b8a354a9e4e7afca Patch, Third Party Advisory
- https://github.com/unicode-org/icu/pull/971 Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/03/msg00024.html Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6IOHSO6BUKC6I66J5PZOMAGFVJ66ZS57/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X3B5RWJQD5LA45MYLLR55KZJOJ5NVZGP/
- https://security.gentoo.org/glsa/202003-15 Third Party Advisory
- https://unicode-org.atlassian.net/browse/ICU-20958 Permissions Required, Third Party Advisory
- https://usn.ubuntu.com/4305-1/ Third Party Advisory
- https://www.debian.org/security/2020/dsa-4646 Third Party Advisory
- https://www.oracle.com//security-alerts/cpujul2021.html Not Applicable, Third Party Advisory
- https://www.oracle.com/security-alerts/cpuapr2022.html Third Party Advisory
- https://www.oracle.com/security-alerts/cpujan2021.html Patch, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00004.html Mailing List, Third Party Advisory
- https://access.redhat.com/errata/RHSA-2020:0738 Third Party Advisory
- https://bugs.chromium.org/p/chromium/issues/detail?id=1044570 Permissions Required, Third Party Advisory
- https://chromereleases.googleblog.com/2020/02/stable-channel-update-for-desktop_24.html Third Party Advisory
- https://chromium.googlesource.com/chromium/deps/icu/+/9f4020916eb1f28f3666f018fdcbe6c9a37f0e08 Patch, Third Party Advisory
- https://github.com/unicode-org/icu/commit/b7d08bc04a4296982fcef8b6b8a354a9e4e7afca Patch, Third Party Advisory
- https://github.com/unicode-org/icu/pull/971 Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/03/msg00024.html Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6IOHSO6BUKC6I66J5PZOMAGFVJ66ZS57/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X3B5RWJQD5LA45MYLLR55KZJOJ5NVZGP/
- https://security.gentoo.org/glsa/202003-15 Third Party Advisory
- https://unicode-org.atlassian.net/browse/ICU-20958 Permissions Required, Third Party Advisory
- https://usn.ubuntu.com/4305-1/ Third Party Advisory
- https://www.debian.org/security/2020/dsa-4646 Third Party Advisory
- https://www.oracle.com//security-alerts/cpujul2021.html Not Applicable, Third Party Advisory
- https://www.oracle.com/security-alerts/cpuapr2022.html Third Party Advisory
- https://www.oracle.com/security-alerts/cpujan2021.html Patch, Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html