Medium severity · published Sep 20, 2021
CVE-2020-21913
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…
5.5
CVSS
1.2%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 68% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
9.0; 10.0 · source: NVD
IC
International Components For Unicode · Unicode
before 66.1 · source: NVD
SS
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5; V3.1.0 before V3.1.5 · source: CISA
SS
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5; V3.1.0 before V3.1.5 · source: CISA
SS
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-21913
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-21913
Patch
https://github.com/unicode-org/icu/pull/886
Mailing List
https://lists.debian.org/debian-lts-announce/2021/10/msg00008.html
Exploit
https://unicode-org.atlassian.net/browse/ICU-20850
Third Party Advisory
https://www.debian.org/security/2021/dsa-5014
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-398330.html
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