USN-5300-3: PHP vulnerabilities

Related Vulnerabilities: CVE-2015-9253   CVE-2017-8923   CVE-2017-9118   CVE-2017-9120   CVE-2017-9119   CVE-2021-21707  

Several security issues were fixed in PHP.

It was discovered that PHP incorrectly handled certain scripts. An attacker could possibly use this issue to cause a denial of service. (CVE-2015-9253, CVE-2017-8923, CVE-2017-9118, CVE-2017-9120)

Details

USN-5300-1 fixed vulnerabilities in PHP. This update provides the
corresponding updates for Ubuntu 21.10.

Original advisory details:

It was discovered that PHP incorrectly handled certain scripts.
An attacker could possibly use this issue to cause a denial of service.
(CVE-2015-9253, CVE-2017-8923, CVE-2017-9118, CVE-2017-9120)

It was discovered that PHP incorrectly handled certain inputs.
An attacker could possibly use this issue to cause a denial of service,
or possibly obtain sensitive information. (CVE-2017-9119)

It was discovered that PHP incorrectly handled certain scripts with XML
parsing functions.
An attacker could possibly use this issue to obtain sensitive information.
(CVE-2021-21707)