Ubuntu update for icu

1) Use-after-free

EUVDB-ID: #VU58432

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-21913

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error within the pkg_createWithAssemblyCode() function in the file tools/pkgdata/pkgdata.cpp. A remote attacker can trick the victim to open a specially crafted file and perform a denial of service (DoS) attack.

Mitigation

Update the affected package icu to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 18.04

libiculx60 (Ubuntu package): before 60.2-3ubuntu3.2

libicu60 (Ubuntu package): before 60.2-3ubuntu3.2

icu-devtools (Ubuntu package): before 60.2-3ubuntu3.2

libicu55 (Ubuntu package): before 55.1-7

libicu52 (Ubuntu package): before 52.1-3ubuntu0.8

CPE2.3

• cpe:2.3:o:canonical:ubuntu:14.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu:16.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu:18.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:libiculx60_ubuntu_package:*:*:*:*:*:ubuntu:*:*
• cpe:2.3:o:canonical:libicu60_ubuntu_package:*:*:*:*:*:ubuntu:*:*
• cpe:2.3:o:canonical:icu-devtools_ubuntu_package:*:*:*:*:*:ubuntu:*:*
• cpe:2.3:o:canonical:libicu55_ubuntu_package:*:*:*:*:*:ubuntu:*:*
• cpe:2.3:o:canonical:libicu52:*:*:*:*:*:ubuntu:*:*

External links

https://ubuntu.com/security/notices/USN-5133-1

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.