Gentoo Linux Security Advisory 202003-62 - A buffer overflow in GNU Screen might allow remote attackers to corrupt memory. Versions less than 4.8.0 are affected.

Gentoo Linux Security Advisory 202003-63 - Multiple vulnerabilities have been found in GNU IDN Library 2, the worst of which could result in the remote execution of arbitrary code. Versions less than 2.2.0 are affected.

Gentoo Linux Security Advisory 202003-64 - Multiple vulnerabilities have been found in libxls, the worst of which could result in the arbitrary execution of code. Versions less than 1.5.2 are affected.

Gentoo Linux Security Advisory 202003-65 - Multiple vulnerabilities have been found in FFmpeg, the worst of which allows remote attackers to execute arbitrary code. Versions greater than or equal to 4 are affected.

Gentoo Linux Security Advisory 202003-66 - Multiple vulnerabilities have been found in QEMU, the worst of which could result in the arbitrary execution of code. Versions less than 4.2.0-r2 are affected.

Gentoo Linux Security Advisory 202004-1 - A vulnerability in HAProxy might lead to remote execution of arbitrary code. Versions less than 2.0.10 are affected.

Gentoo Linux Security Advisory 202004-2 - Multiple vulnerabilities have been found in VirtualBox, the worst of which could allow an attacker to take control of VirtualBox. Versions prior to 6.1.2 are affected.

Gentoo Linux Security Advisory 202004-3 - Multiple vulnerabilities have been found in GPL Ghostscript, the worst of which could result in the execution of arbitrary code. Versions prior to 9.28_rc4 are affected.

Gentoo Linux Security Advisory 202004-4 - A heap use-after-free flaw in Qt WebEngine at worst might allow an attacker to execute arbitrary code. Versions less than 5.14.1 are affected.

Gentoo Linux Security Advisory 202004-5 - Multiple vulnerabilities have been found in ledger, the worst of which could result in the arbitrary execution of code. Versions less than 3.1.2 are affected.

Gentoo Linux Security Advisory 202004-7 - Multiple vulnerabilities have been found in Mozilla Firefox, the worst of which could result in the arbitrary execution of code. Versions less than 74.0.1 are affected.

Gentoo Linux Security Advisory 202004-8 - A vulnerability in libssh could allow a remote attacker to cause a Denial of Service condition. Versions less than 0.9.4 are affected.

Gentoo Linux Security Advisory 202004-9 - Multiple vulnerabilities have been found in Chromium and Google Chrome, the worst of which could allow remote attackers to execute arbitrary code. Versions less than 81.0.4044.92 are affected.

Gentoo Linux Security Advisory 202004-10 - Multiple vulnerabilities were found in OpenSSL, the worst of which could allow remote attackers to cause a Denial of Service condition. Versions less than 1.1.1g are affected.

Gentoo Linux Security Advisory 202004-11 - Multiple vulnerabilities have been found in Mozilla Firefox, the worst of which could result in the arbitrary execution of code. Versions less than 68.7.0 are affected.

Gentoo Linux Security Advisory 202004-12 - Multiple vulnerabilities have been found in Chromium and Google Chrome, the worst of which could allow remote attackers to execute arbitrary code. Versions less than 81.0.4044.122 are affected.

Gentoo Linux Security Advisory 202004-13 - Multiple vulnerabilities have been found in Git which might all allow attackers to access sensitive information. Versions less than 2.26.2 are affected.

113 bytes small Linux/x64 anti-debug trick (INT3 trap) with execve("/bin/sh") shellcode that is NULL free.

Linux futex+VFS suffers from an improper inode reference in get_futex_key() that causes a use-after-free if the superblock goes away.

Linux 5.6 has an issue with IORING_OP_MADVISE racing with coredumping.

129 bytes small Linux/x86_64 bind (4444/TCP) shell (/bin/sh) + password (pass) shellcode.

157 bytes small Linux/MIPS64 reverse (localhost:4444/TCP) shell shellcode.

120 bytes small Linux/x86_64 reverse (127.0.0.1:4444/TCP) shell (/bin/sh) + password (pass) shellcode.

Linux/x86 TCP reverse shell 127.0.0.1 nullbyte free shellcode.

53 bytes small Linux/x86 bind TCP port 43690 null-free shellcode.

188 bytes small Lnux/x64 reverse TCP stager shellcode.

Proof of concept code that demonstrates an ASLR bypass of PIE compiled 64bit Linux.

The release of this advisory provides exploitation details in relation a weakness in the Linux ASLR implementation. The problem appears when the executable is PIE compiled and it has an address leak belonging to the executable. These details were obtained through the Packet Storm Bug Bounty program and are being released to the community.

Mandriva Linux Security Advisory 2013-271 - The make include files in NetBSD before 1.6.2, as used in pmake 1.111 and earlier, allow local users to overwrite arbitrary files via a symlink attack on a /tmp/_depend##### temporary file, related to bsd.lib.mk and bsd.prog.mk.

This is a tool that generates a Linux kernel module for custom rules with Netfilter hooking to block ports, run in hidden mode, perform rootkit functions, etc.

HAP-Linux is a collection of security related patches which are designed to be applied after Solar Designers Openwall patches are installed. Changes include some extra information in the printks, and the ability to allow hard links to files you don't own which are in your group, and the ability to follow links & pipes in +t directories if they are not world-writable. This is useful for getting various daemons to run chrooted as a non-root user, and some secure drop- directory stuff.

Information regarding a simple mitigation to disable 32bit binaries in Linux.

Gentoo Linux Security Advisory 202004-14 - Multiple vulnerabilities have been found in FontForge, the worst of which could result in the arbitrary execution of code. Versions less than 20200314 are affected.

Gentoo Linux Security Advisory 202004-15 - Multiple vulnerabilities have been found in libu2f-host, the worst of which could result in the execution of code. Versions less than 1.1.10 are affected.

Gentoo Linux Security Advisory 202004-16 - Multiple vulnerabilities have been found in Cacti, the worst of which could result in the arbitrary execution of code. Versions less than 1.2.11 are affected.

Gentoo Linux Security Advisory 202004-17 - Multiple vulnerabilities have been found in Django, the worst of which could result in privilege escalation. Versions less than 2.2.11 are affected.

Gentoo Linux Security Advisory 202003-6 - Multiple vulnerabilities have been found in Ruby, the worst of which could lead to the remote execution of arbitrary code. Versions less than 2.4.9:2.4 are affected.

Gentoo Linux Security Advisory 202003-9 - A vulnerability in OpenID library for Ruby at worst might allow an attacker to bypass authentication. Versions less than 2.9.2 are affected.

Mandriva Linux Security Advisory 2012-081 - Security issues were identified and fixed in mozilla firefox. Mozilla developers identified and fixed several memory safety bugs in the browser engine used in Firefox and other Mozilla-based products. Using the Address Sanitizer tool, security researcher Aki Helin from OUSPG found that IDBKeyRange of indexedDB remains in the XPConnect hashtable instead of being unlinked before being destroyed. Security research firm iDefense reported that researcher wushi of team509 discovered a memory corruption on Windows Vista and Windows 7 systems with hardware acceleration disabled or using incompatible video drivers. Various other issues have also been addressed.

Gentoo Linux Security Advisory 202004-6 - A regression in GnuTLS breaks the security guarantees of the DTLS protocol. Versions less than 3.6.13 are affected.

114 bytes small Linux/x86 bind shell generator shellcode.

Gentoo Linux Security Advisory 202003-57 - Multiple vulnerabilities have been found in PHP, the worst of which could result in the execution of arbitrary shell commands. Versions less than 7.4.4 are affected.

80 bytes small Linux/x86 reverse shell generator shellcode with customizable TCP port and IP address.