CVE-2020-21913

MEDIUM EPSS 62.4%
Published Sep 20, 20214y ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Sep 20, 2021 4y ago
Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
62.4% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 3

VendorProductVersionRange
unicodeinternational_components_for_unicode* <66.1
debiandebian_linux9.0any
debiandebian_linux10.0any

References 4

  • github.com https://github.com/unicode-org/icu/pull/886
    PatchThird Party Advisory
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2021/10/msg00008.html
    Mailing ListThird Party Advisory
  • unicode-org.atlassian.net https://unicode-org.atlassian.net/browse/ICU-20850
    ExploitVendor Advisory
  • debian.org https://www.debian.org/security/2021/dsa-5014
    Third Party Advisory

Remediation

  • github.com https://github.com/unicode-org/icu/pull/886
    PatchThird Party Advisory