Vulnerability Details : 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 tools/pkgdata/pkgdata.cpp.
Vulnerability category: Memory Corruption
Products affected by CVE-2020-21913
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:a:unicode:international_components_for_unicode:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-21913
0.11%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 42 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-21913
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:N/A:P |
8.6
|
2.9
|
NIST | |
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2020-21913
-
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-21913
-
https://lists.debian.org/debian-lts-announce/2021/10/msg00008.html
[SECURITY] [DLA 2784-1] icu security updateMailing List;Third Party Advisory
-
https://unicode-org.atlassian.net/browse/ICU-20850
[ICU-20850] A Use After Free Bug - Unicode ConsortiumExploit;Vendor Advisory
-
https://www.debian.org/security/2021/dsa-5014
Debian -- Security Information -- DSA-5014-1 icuThird Party Advisory
-
https://github.com/unicode-org/icu/pull/886
ICU-20850 Use LocalMemory for cmd to prevent use-after-free issue by jefgen · Pull Request #886 · unicode-org/icu · GitHubPatch;Third Party Advisory
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