| Name | CVE-2020-10531 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more) |
| References | DLA-2151-1, DSA-4646-1 |
| Debian Bugs | 953747 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| icu (PTS) | buster | 63.1-6+deb10u3 | fixed |
| buster (security) | 63.1-6+deb10u2 | fixed | |
| bullseye | 67.1-7 | fixed | |
| bookworm, sid | 72.1-3 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| icu | source | experimental | 66.1-2 | |||
| icu | source | jessie | 52.1-8+deb8u8 | DLA-2151-1 | ||
| icu | source | stretch | 57.1-6+deb9u4 | DSA-4646-1 | ||
| icu | source | buster | 63.1-6+deb10u1 | DSA-4646-1 | ||
| icu | source | (unstable) | 63.2-3 | 953747 |
https://bugs.chromium.org/p/chromium/issues/detail?id=1044570 (not public)
Upstream ICU bug: https://unicode-org.atlassian.net/browse/ICU-20958 (private)
Fixed by: https://github.com/unicode-org/icu/commit/b7d08bc04a4296982fcef8b6b8a354a9e4e7afca
https://github.com/unicode-org/icu/pull/971