========================================================================== Ubuntu Security Notice USN-5673-1 October 13, 2022
unzip vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 16.04 ESM - Ubuntu 14.04 ESM Summary: Several security issues were fixed in unzip. Software Description: - unzip: De-archiver for .zip files Details: It was discovered that unzip did not properly handle unicode strings under certain circumstances. If a user were tricked into opening a specially crafted zip file, an attacker could possibly use this issue to cause unzip to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-4217) It was discovered that unzip did not properly perform bounds checking while converting wide strings to local strings. If a user were tricked into opening a specially crafted zip file, an attacker could possibly use this issue to cause unzip to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2022-0529, CVE-2022-0530) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS: unzip 6.0-26ubuntu3.1 Ubuntu 20.04 LTS: unzip 6.0-25ubuntu1.1 Ubuntu 18.04 LTS: unzip 6.0-21ubuntu1.2 Ubuntu 16.04 ESM: unzip 6.0-20ubuntu1.1+esm1 Ubuntu 14.04 ESM: unzip 6.0-9ubuntu1.6+esm1 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-5673-1 CVE-2021-4217, CVE-2022-0529, CVE-2022-0530, https://launchpad.net/bugs/1957077 Package Information: https://launchpad.net/ubuntu/+source/unzip/6.0-26ubuntu3.1 https://launchpad.net/ubuntu/+source/unzip/6.0-25ubuntu1.1 https://launchpad.net/ubuntu/+source/unzip/6.0-21ubuntu1.2
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