CVE-2020-10531

Publication date 12 March 2020

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

8.8 · High

Score breakdown

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.

Read the notes from the security team

Status

Package Ubuntu Release Status
chromium-browser 19.10 eoan
Not affected
18.04 LTS bionic
Fixed 80.0.3987.149-0ubuntu0.18.04.1
16.04 LTS xenial
Fixed 80.0.3987.149-0ubuntu0.16.04.1
14.04 LTS trusty Not in release
icu 19.10 eoan
Fixed 63.2-2ubuntu0.1
18.04 LTS bionic
Fixed 60.2-3ubuntu3.1
16.04 LTS xenial
Fixed 55.1-7ubuntu0.5
14.04 LTS trusty
Fixed 52.1-3ubuntu0.8+esm1

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Notes

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.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
chromium-browser
icu

Severity score breakdown

Parameter Value
Base score 8.8 · High
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