CVE-2020-21913

Debian Security Advisory 5014-1

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

International Components for Unicode (ICU-20850) v66.1 was discovered to contain a use after free bug in the pkg_createWithAssemblyCode function in the file tools/pkgdata/pkgdata.cpp.

Se ha detectado que International Components for Unicode (ICU-20850) versión v66.1, contiene un bug de uso de memoria previamente liberada en la función pkg_createWithAssemblyCode en el archivo tools/pkgdata/pkgdata.cpp

Rongxin Wu discovered a use-after-free vulnerability in the International Components for Unicode (ICU) library which could result in denial of service or potentially the execution of arbitrary code.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-08-13 CVE Reserved
2021-09-20 CVE Published
2024-08-04 CVE Updated
2024-08-04 First Exploit
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-416: Use After Free

CAPEC

References (4)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2021/10/msg00008.html	Mailing List

URL	Date	SRC
https://unicode-org.atlassian.net/browse/ICU-20850	2024-08-04

URL	Date	SRC
https://github.com/unicode-org/icu/pull/886	2021-11-29

URL	Date	SRC
https://www.debian.org/security/2021/dsa-5014	2021-11-29

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Unicode Search vendor "Unicode"		International Components For Unicode Search vendor "Unicode" for product "International Components For Unicode"				< 66.1 Search vendor "Unicode" for product "International Components For Unicode" and version " < 66.1"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected