Vulnerability Name:

CVE-2020-21913 (CCN-209992)

Assigned:2019-10-15
Published:2019-10-15
Updated:2021-11-29
Summary: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 v3 Severity:5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
4.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
3.3 Low (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)
2.9 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
1.7 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-416
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2020-21913

Source: XF
Type: UNKNOWN
icu-cve202021913-dos(209992)

Source: CCN
Type: ICU GIT Repository
ICU-20850 Use LocalMemory for cmd to prevent use-after-free issue #886

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/unicode-org/icu/pull/886

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20211012 [SECURITY] [DLA 2784-1] icu security update

Source: MISC
Type: Exploit, Vendor Advisory
https://unicode-org.atlassian.net/browse/ICU-20850

Source: DEBIAN
Type: Third Party Advisory
DSA-5014

Vulnerable Configuration:Configuration 1:
  • cpe:/a:unicode:international_components_for_unicode:*:*:*:*:*:*:*:* (Version < 66.1)

    • Configuration 2:
  • cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*
  • OR cpe:/o:debian:debian_linux:10.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:7596
    P
    		libicu-devel-65.1-150200.4.5.1 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:8082
    P
    		libicu60_2-60.2-150000.3.12.1 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:740
    P
    		Security update for icu (Moderate)
    2022-09-07
    oval:org.opensuse.security:def:739
    P
    		Security update for icu (Moderate)
    2022-09-07
    oval:org.opensuse.security:def:5303
    P
    		Security update for icu (Moderate) (in QA)
    2022-08-22
    oval:org.opensuse.security:def:6111
    P
    		Security update for icu (Moderate) (in QA)
    2022-08-22
    oval:org.opensuse.security:def:6345
    P
    		Security update for icu (Moderate) (in QA)
    2022-08-22
    BACK
    unicode international components for unicode *
    debian debian linux 9.0
    debian debian linux 10.0