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Files from Andy Nguyen

First Active2020-07-31
Last Active2021-10-07
Netfilter x_tables Heap Out-Of-Bounds Write / Privilege Escalation
Posted Oct 7, 2021
Authored by Brendan Coles, Andy Nguyen, Szymon Janusz | Site metasploit.com

A heap out-of-bounds write affecting Linux since version 2.6.19-rc1 was discovered in net/netfilter/x_tables.c. This allows an attacker to gain privileges or cause a denial of service (via heap memory corruption) through user name space. Kernels up to and including 5.11 are vulnerable.

tags | exploit, denial of service, kernel
systems | linux
advisories | CVE-2021-22555
SHA-256 | 7caefc49d920cc0b0d58e9ad762b7ffbd02e62e1e3225217c8586f8867ea42e8
Linux Kernel Netfilter Heap Out-Of-Bounds Write
Posted Jul 16, 2021
Authored by Andy Nguyen

A heap out-of-bounds write affecting the Linux kernel since version 2.6.19-rc1 was discovered in net/netfilter/x_tables.c. This allows an attacker to gain privileges or cause a denial of service condition (via heap memory corruption) through user name space.

tags | exploit, denial of service, kernel
systems | linux
advisories | CVE-2021-22555
SHA-256 | 43ba43820c567d536530e6cefcfcebfdd790ebc48dc3c00634126ad08fb0dfbf
Linux Kernel 5.4 BleedingTooth Remote Code Execution
Posted Apr 8, 2021
Authored by Andy Nguyen

Linux kernel version 5.4 BleedingTooth bluetooth zero-click proof of concept remote code execution exploit.

tags | exploit, remote, kernel, code execution, proof of concept
systems | linux
advisories | CVE-2020-12351, CVE-2020-12352
SHA-256 | 5108c67d6fbb60138d1ac3f7b89fb015439b9afd13c3fb0e06991d6195d956ac
FreeBSD ip6_setpktopt Use-After-Free Privilege Escalation
Posted Jul 31, 2020
Authored by Brendan Coles, Andy Nguyen | Site metasploit.com

This Metasploit module exploits a race and use-after-free vulnerability in the FreeBSD kernel IPv6 socket handling. A missing synchronization lock in the IPV6_2292PKTOPTIONS option handling in setsockopt permits racing ip6_setpktopt access to a freed ip6_pktopts struct. This exploit overwrites the ip6po_pktinfo pointer of a ip6_pktopts struct in freed memory to achieve arbitrary kernel read/write.

tags | exploit, arbitrary, kernel
systems | freebsd, bsd
advisories | CVE-2020-7457
SHA-256 | 00b0e1e6a5651af403765318e00556b0c8953f9ef2bbda38acb929b269045b6a
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