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CVE-2020-10531

Published: 12 March 2020

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.

Notes

AuthorNote
leosilva
According with debian versions bellow 52.1.8 are not affected
because code is not present, though, it needs further confirmation.
keep precise/trusty as needs-triage.
mdeslaur
in xenial and older releases, vulnerable code looks to be in
UnicodeString::doReplace, need to investigate
leosilva
doAppend was write based on doReplace, that originally shipped the vul code
more info, check commit 3d77fc18b8b. Marking precise/trusty as needed.

Priority

Medium

Cvss 3 Severity Score

8.8

Score breakdown

Status

Package Release Status
chromium-browser
Launchpad, Ubuntu, Debian
bionic
Released (80.0.3987.149-0ubuntu0.18.04.1)
eoan Not vulnerable
(code not present)
trusty Does not exist

upstream
Released (80.0.3987.122)
xenial
Released (80.0.3987.149-0ubuntu0.16.04.1)
Patches:
upstream: https://chromium.googlesource.com/chromium/deps/icu/+/9f4020916eb1f28f3666f018fdcbe6c9a37f0e08

icu
Launchpad, Ubuntu, Debian
bionic
Released (60.2-3ubuntu3.1)
eoan
Released (63.2-2ubuntu0.1)
trusty
Released (52.1-3ubuntu0.8+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream Needed

xenial
Released (55.1-7ubuntu0.5)
Patches:

upstream: https://github.com/unicode-org/icu/commit/b7d08bc04a4296982fcef8b6b8a354a9e4e7afca

Severity score breakdown

Parameter Value
Base score 8.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H