CVE-2020-10531

HIGH

International Components for Unicode < 66.1 - Heap-Based Buffer Overflow via UnicodeString::doAppend() Integer Overflow

Title source: llm
STIX 2.1

Description

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.

References (18)

Core 18
Core References
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2020:0738
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/202003-15
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2020/03/msg00024.html
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2020/dsa-4646
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4305-1/
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00004.html
Patch, Third Party Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpujan2021.html
Permissions Required, Third Party Advisory x_refsource_misc
https://bugs.chromium.org/p/chromium/issues/detail?id=1044570
Permissions Required, Third Party Advisory x_refsource_misc
https://unicode-org.atlassian.net/browse/ICU-20958
Issue Tracking, Patch, Third Party Advisory x_refsource_misc
https://github.com/unicode-org/icu/pull/971
Not Applicable, Third Party Advisory x_refsource_misc
https://www.oracle.com//security-alerts/cpujul2021.html
Third Party Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpuapr2022.html

Scores

CVSS v3 8.8
EPSS 0.0079
EPSS Percentile 74.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

CWE
CWE-190 CWE-787
Status published
Products (21)
canonical/ubuntu_linux 12.04
canonical/ubuntu_linux 14.04
canonical/ubuntu_linux 16.04
canonical/ubuntu_linux 18.04
canonical/ubuntu_linux 19.10
debian/debian_linux 8.0
debian/debian_linux 9.0
debian/debian_linux 10.0
fedoraproject/fedora 30
fedoraproject/fedora 31
... and 11 more
Published Mar 12, 2020
Tracked Since Feb 18, 2026