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Files Date: 2022-03-03

Polkit pkexec Local Privilege Escalation
Posted Mar 3, 2022
Authored by Qualys Security Advisory, Dhiraj Mishra, bwatters-r7, Andris Raugulis | Site metasploit.com

This is a Metasploit module for the argument processing bug in the polkit pkexec binary. If the binary is provided with no arguments, it will continue to process environment variables as argument variables, but without any security checking. By using the execve call we can specify a null argument list and populate the proper environment variables. This exploit is architecture independent.

tags | exploit
advisories | CVE-2021-4034
SHA-256 | 45168e34096e858ea0c2f1c2c12695c4121ec633a36c09aef6de9a8d95de3371
Ubuntu Security Notice USN-5311-1
Posted Mar 3, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5311-1 - It was discovered that containerd allows attackers to gain access to read- only copies of arbitrary files and directories on the host via a specially- crafted image configuration. An attacker could possibly use this issue to obtain sensitive information.

tags | advisory, arbitrary
systems | linux, ubuntu
advisories | CVE-2022-23648
SHA-256 | 5efeeadac5a6cfae3bf4bb56fe44a99d061fa7f74da141e96f22e6b9dcf626d5
Ubuntu Security Notice USN-5300-2
Posted Mar 3, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5300-2 - USN-5300-1 fixed vulnerabilities in PHP. This update provides the corresponding updates for Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. It was discovered that PHP incorrectly handled certain scripts. An attacker could possibly use this issue to cause a denial of service. 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. It was discovered that PHP incorrectly handled certain scripts with XML parsing functions. An attacker could possibly use this issue to obtain sensitive information.

tags | advisory, denial of service, php, vulnerability
systems | linux, ubuntu
advisories | CVE-2017-8923, CVE-2017-9119, CVE-2021-21707
SHA-256 | 8d289bff69aa5a1c07a2ec7e6f761299daae4511e4dcce44a32c652a3e06a38e
Ubuntu Security Notice USN-5312-1
Posted Mar 3, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5312-1 - It was discovered that HAProxy incorrectly handled certain headers. A remote attacker could possibly use this issue to cause HAProxy to stop responding, resulting in a denial of service.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2022-0711
SHA-256 | 6b681e0a603f1158ee21ec54cc1c71c5126449b565ea37be9ba172558f9f9795
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