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Operating System: OpenBSD

OpenSSH 9.0p1
Posted Apr 8, 2022
Authored by Damien Miller | Site openssh.com

This is a Linux/portable port of OpenBSD's excellent OpenSSH. OpenSSH is based on the last free version of Tatu Ylonen's SSH with all patent-encumbered algorithms removed, all known security bugs fixed, new features reintroduced, and many other clean-ups.

Changes: This release is focused on bug fixing. This release switches scp(1) from using the legacy scp/rcp protocol to using the SFTP protocol by default. 6 bug fixes, 3 new features, and 7 portability updates.
tags | tool, encryption
systems | linux, unix, openbsd
SHA-256 | 03974302161e9ecce32153cfa10012f1e65c8f3750f573a73ab1befd5972a28a
OpenSSH 8.9p1
Posted Feb 23, 2022
Authored by Damien Miller | Site openssh.com

This is a Linux/portable port of OpenBSD's excellent OpenSSH. OpenSSH is based on the last free version of Tatu Ylonen's SSH with all patent-encumbered algorithms removed, all known security bugs fixed, new features reintroduced, and many other clean-ups.

Changes: Various minor bug fixes and improvements.
tags | tool, encryption
systems | linux, unix, openbsd
SHA-256 | fd497654b7ab1686dac672fb83dfb4ba4096e8b5ffcdaccd262380ae58bec5e7
OpenSSH 8.8p1
Posted Sep 27, 2021
Authored by Damien Miller | Site openssh.com

This is a Linux/portable port of OpenBSD's excellent OpenSSH. OpenSSH is based on the last free version of Tatu Ylonen's SSH with all patent-encumbered algorithms removed, all known security bugs fixed, new features reintroduced, and many other clean-ups.

Changes: Various minor bug fixes and improvements.
tags | tool, encryption
systems | linux, unix, openbsd
SHA-256 | 4590890ea9bb9ace4f71ae331785a3a5823232435161960ed5fc86588f331fe9
OpenSSH 8.7p1
Posted Aug 20, 2021
Authored by Damien Miller | Site openssh.com

This is a Linux/portable port of OpenBSD's excellent OpenSSH. OpenSSH is based on the last free version of Tatu Ylonen's SSH with all patent-encumbered algorithms removed, all known security bugs fixed, new features reintroduced, and many other clean-ups.

Changes: Fixed a race in pselect replacement code. Improved github test driver script. Various minor bug fixes.
tags | tool, encryption
systems | linux, unix, openbsd
SHA-256 | 7ca34b8bb24ae9e50f33792b7091b3841d7e1b440ff57bc9fabddf01e2ed1e24
OpenSSH 8.6p1
Posted Apr 19, 2021
Authored by Damien Miller | Site openssh.com

This is a Linux/portable port of OpenBSD's excellent OpenSSH. OpenSSH is based on the last free version of Tatu Ylonen's SSH with all patent-encumbered algorithms removed, all known security bugs fixed, new features reintroduced, and many other clean-ups.

Changes: Extensive amount of code clean ups and bug fixes have been applied.
tags | tool, encryption
systems | linux, unix, openbsd
SHA-256 | c3e6e4da1621762c850d03b47eed1e48dff4cc9608ddeb547202a234df8ed7ae
OpenSSH 8.5p1
Posted Mar 3, 2021
Authored by Damien Miller | Site openssh.com

This is a Linux/portable port of OpenBSD's excellent OpenSSH. OpenSSH is based on the last free version of Tatu Ylonen's SSH with all patent-encumbered algorithms removed, all known security bugs fixed, new features reintroduced, and many other clean-ups.

Changes: Double-free memory corruption issue fixed in ssh-agent. A mitigation was added to stop an overly long username going to PAM. Future deprecation updates provided and many other updates.
tags | tool, encryption
systems | linux, unix, openbsd
SHA-256 | f52f3f41d429aa9918e38cf200af225ccdd8e66f052da572870c89737646ec25
OpenSSH 8.4p1
Posted Sep 28, 2020
Authored by Damien Miller | Site openssh.com

This is a Linux/portable port of OpenBSD's excellent OpenSSH. OpenSSH is based on the last free version of Tatu Ylonen's SSH with all patent-encumbered algorithms removed, all known security bugs fixed, new features reintroduced, and many other clean-ups.

Changes: Future deprecations scoped and multiple updates.
tags | tool, encryption
systems | linux, unix, openbsd
SHA-256 | 5a01d22e407eb1c05ba8a8f7c654d388a13e9f226e4ed33bd38748dafa1d2b24
OpenSSH 8.3p1
Posted May 27, 2020
Authored by Damien Miller | Site openssh.com

This is a Linux/portable port of OpenBSD's excellent OpenSSH. OpenSSH is based on the last free version of Tatu Ylonen's SSH with all patent-encumbered algorithms removed, all known security bugs fixed, new features reintroduced, and many other clean-ups.

Changes: Deprecation of SHA-1 use. Various other bug fixes and updates.
tags | tool, encryption
systems | linux, unix, openbsd
SHA-256 | f2befbe0472fe7eb75d23340eb17531cb6b3aac24075e2066b41f814e12387b2
OpenSMTPD Out-Of-Bounds Read
Posted Feb 25, 2020
Authored by Qualys Security Advisory

Qualys discovered a vulnerability in OpenSMTPD, OpenBSD's mail server. This vulnerability, an out-of-bounds read introduced in December 2015, is exploitable remotely and leads to the execution of arbitrary shell commands.

tags | exploit, arbitrary, shell
systems | openbsd
advisories | CVE-2020-8794
SHA-256 | 2c58b82819510289b2fd55d1c6a82b81b279777abd6a6b0db391f990ec12b148
OpenSMTPD Local Information Disclosure
Posted Feb 25, 2020
Authored by Qualys Security Advisory

Qualys discovered a minor vulnerability in OpenSMTPD, OpenBSD's mail server. An unprivileged local attacker can read the first line of an arbitrary file (for example, root's password hash in /etc/master.passwd) or the entire contents of another user's file (if this file and /var/spool/smtpd/ are on the same filesystem). A proof of concept exploit is included in this archive.

tags | exploit, arbitrary, local, root, proof of concept
systems | openbsd
advisories | CVE-2020-8793
SHA-256 | 3617b8854e485e1d063e08764e96429e54c6b7bb0467d127e819133f80c925d5
OpenSSH 8.2p1
Posted Feb 17, 2020
Authored by Damien Miller | Site openssh.com

This is a Linux/portable port of OpenBSD's excellent OpenSSH. OpenSSH is based on the last free version of Tatu Ylonen's SSH with all patent-encumbered algorithms removed, all known security bugs fixed, new features reintroduced, and many other clean-ups.

Changes: SSHFP is now an RFC. Various other bug fixes and updates.
tags | tool, encryption
systems | linux, unix, openbsd
SHA-256 | 43925151e6cf6cee1450190c0e9af4dc36b41c12737619edff8bcebdff64e671
OpenSMTPD 6.6.1 Local Privilege Escalation
Posted Feb 11, 2020
Authored by Marco Ivaldi

smtp_mailaddr in smtp_session.c in OpenSMTPD 6.6, as used in OpenBSD 6.6 and other products, allows remote attackers to execute arbitrary commands as root via a crafted SMTP session, as demonstrated by shell meta-characters in a MAIL FROM field. This affects the "uncommented" default configuration. The issue exists because of an incorrect return value upon failure of input validation.

tags | exploit, remote, arbitrary, shell, root
systems | openbsd
advisories | CVE-2020-7247
SHA-256 | f42f9b3d984851bedec7966cba6c70991ad906a48462064b1ae90325c6aa112b
OpenBSD OpenSMTPD Privilege Escalation / Code Execution
Posted Jan 29, 2020
Authored by Qualys Security Advisory

Qualys discovered a vulnerability in OpenSMTPD, OpenBSD's mail server. This vulnerability is exploitable since May 2018 (commit a8e222352f, "switch smtpd to new grammar") and allows an attacker to execute arbitrary shell commands, as root.

tags | exploit, arbitrary, shell, root
systems | openbsd
advisories | CVE-2020-7247
SHA-256 | 9415f92980a964e9430ed555502126d19de735d2acfd5db27d83bb342e5a8b2c
OpenBSD Dynamic Loader chpass Privilege Escalation
Posted Dec 27, 2019
Authored by Brendan Coles, Qualys Security Advisory | Site metasploit.com

This Metasploit module exploits a vulnerability in the OpenBSD ld.so dynamic loader (CVE-2019-19726). The _dl_getenv() function fails to reset the LD_LIBRARY_PATH environment variable when set with approximately ARG_MAX colons. This can be abused to load libutil.so from an untrusted path, using LD_LIBRARY_PATH in combination with the chpass set-uid executable, resulting in privileged code execution. This module has been tested successfully on OpenBSD 6.1 (amd64) and OpenBSD 6.6 (amd64).

tags | exploit, code execution
systems | openbsd
advisories | CVE-2019-19726
SHA-256 | 3e6540f0f1a2e09ac135f635d113e22b32dffae061cff0c1ae9ba68f036aa0a2
Qualys Security Advisory - OpenBSD Dynamic Loader Privilege Escalation
Posted Dec 12, 2019
Authored by Qualys Security Advisory

Qualys discovered a local privilege escalation in OpenBSD's dynamic loader (ld.so). This vulnerability is exploitable in the default installation (via the set-user-ID executable chpass or passwd) and yields full root privileges. They developed a simple proof of concept and successfully tested it against OpenBSD 6.6 (the current release), 6.5, 6.2, and 6.1, on both amd64 and i386; other releases and architectures are probably also exploitable.

tags | exploit, local, root, proof of concept
systems | openbsd
advisories | CVE-2019-19726
SHA-256 | 4e1f695e83c851f4826c356e0fbe52865163d4b41d6d1a6675fca7178914287b
Qualys Security Advisory - OpenBSD Authentication Bypass / Privilege Escalation
Posted Dec 5, 2019
Site qualys.com

Qualys has discovered that OpenBSD suffers from multiple authentication bypass and local privilege escalation vulnerabilities.

tags | exploit, local, vulnerability
systems | openbsd
advisories | CVE-2019-19519, CVE-2019-19520, CVE-2019-19521, CVE-2019-19522
SHA-256 | f17dd04f6e2715e22520176b0b9b59af9523bd1f17067f5a5814eb8675c0497d
Xorg X11 Server Local Privilege Escalation
Posted Nov 12, 2019
Authored by Narendra Shinde | Site metasploit.com

This Metasploit module has been tested with AIX 7.1 and 7.2, and should also work with 6.1. Due to permission restrictions of the crontab in AIX, this module does not use cron, and instead overwrites /etc/passwd in order to create a new user with root privileges. All currently logged in users need to be included when /etc/passwd is overwritten, else AIX will throw 'Cannot get "LOGNAME" variable' when attempting to change user. The Xorg '-fp' parameter used in the OpenBSD exploit does not work on AIX, and is replaced by '-config', in conjuction with ANSI-C quotes to inject newlines when overwriting /etc/passwd.

tags | exploit, root
systems | openbsd, aix
advisories | CVE-2018-14665
SHA-256 | cdb60dbe662ae825c2e68b4e3467951ff4065037e1a4c7ab93afe4fd720eaf44
OpenSSH 8.1p1
Posted Oct 9, 2019
Authored by Damien Miller | Site openssh.com

This is a Linux/portable port of OpenBSD's excellent OpenSSH. OpenSSH is based on the last free version of Tatu Ylonen's SSH with all patent-encumbered algorithms removed, all known security bugs fixed, new features reintroduced, and many other clean-ups.

Changes: An exploitable integer overflow bug was found in the private key parsing code for the XMSS key type and addressed. Added protection for private keys at rest in RAM against speculation and memory side-channel attacks like Spectre, Meltdown and Rambleed. Various other bug fixes and updates.
tags | tool, encryption
systems | linux, unix, openbsd
SHA-256 | 02f5dbef3835d0753556f973cd57b4c19b6b1f6cd24c03445e23ac77ca1b93ff
OpenSSH 8.0p1
Posted Apr 18, 2019
Authored by Damien Miller | Site openssh.com

This is a Linux/portable port of OpenBSD's excellent OpenSSH. OpenSSH is based on the last free version of Tatu Ylonen's SSH with all patent-encumbered algorithms removed, all known security bugs fixed, new features reintroduced, and many other clean-ups.

Changes: Various bug fixes and updates.
tags | tool, encryption
systems | linux, unix, openbsd
SHA-256 | bd943879e69498e8031eb6b7f44d08cdc37d59a7ab689aa0b437320c3481fd68
Xorg X11 Server SUID Privilege Escalation
Posted Nov 25, 2018
Authored by Narendra Shinde, Raptor, Aaron Ringo | Site metasploit.com

This Metasploit module attempts to gain root privileges with SUID Xorg X11 server versions 1.19.0 up to 1.20.3. A permission check flaw exists for -modulepath and -logfile options when starting Xorg. This allows unprivileged users that can start the server the ability to elevate privileges and run arbitrary code under root privileges. This Metasploit module has been tested with OpenBSD 6.3, 6.4, and CentOS 7 (1708). CentOS default install will require console auth for the users session. Cron launches the payload so if Selinux is enforcing exploitation may still be possible, but the module will bail. Xorg must have SUID permissions and may not start if running. On exploitation a crontab.old backup file will be created by Xorg. This Metasploit module will remove the .old file and restore crontab after successful exploitation. Failed exploitation may result in a corrupted crontab. On successful exploitation artifacts will be created consistent with starting Xorg and running a cron.

tags | exploit, arbitrary, root
systems | linux, openbsd, centos
advisories | CVE-2018-14665
SHA-256 | 720e628b35284931ff0424715e648634cd3ec31db1a89c8b1fff88eddfb6f4ab
OpenSSH 7.9p1
Posted Oct 19, 2018
Authored by Damien Miller | Site openssh.com

This is a Linux/portable port of OpenBSD's excellent OpenSSH. OpenSSH is based on the last free version of Tatu Ylonen's SSH with all patent-encumbered algorithms removed, all known security bugs fixed, new features reintroduced, and many other clean-ups.

Changes: Now requires OpenSSL 1.1.x series 1.1.0g or greater. Various other updates.
tags | tool, encryption
systems | linux, unix, openbsd
SHA-256 | 6b4b3ba2253d84ed3771c8050728d597c91cfce898713beb7b64a305b6f11aad
OpenSSH 7.8p1
Posted Aug 24, 2018
Authored by Damien Miller | Site openssh.com

This is a Linux/portable port of OpenBSD's excellent OpenSSH. OpenSSH is based on the last free version of Tatu Ylonen's SSH with all patent-encumbered algorithms removed, all known security bugs fixed, new features reintroduced, and many other clean-ups.

Changes: Multiple updates.
tags | tool, encryption
systems | linux, unix, openbsd
SHA-256 | 1a484bb15152c183bb2514e112aa30dd34138c3cfb032eee5490a66c507144ca
rldns 1.2
Posted May 11, 2018
Authored by Ringlayer | Site ringlayer.net

rldns is an open source lightweight DNS server for linux, netbsd, freebsd, and openbsd. Runs on x86 and x86_64 architectures.

Changes: Various updates.
tags | tool, x86
systems | linux, netbsd, unix, freebsd, bsd, openbsd
SHA-256 | 3ef0107cfa51f2818c05a51cce9b22d87404ba178c87f4441cf3b73f5957e175
OpenSSH 7.7p1
Posted Apr 2, 2018
Authored by Damien Miller | Site openssh.com

This is a Linux/portable port of OpenBSD's excellent OpenSSH. OpenSSH is based on the last free version of Tatu Ylonen's SSH with all patent-encumbered algorithms removed, all known security bugs fixed, new features reintroduced, and many other clean-ups.

Changes: Multiple updates.
tags | tool, encryption
systems | linux, unix, openbsd
SHA-256 | d73be7e684e99efcd024be15a30bffcbe41b012b2f7b3c9084aed621775e6b8f
OpenSSH 7.6p1
Posted Oct 4, 2017
Authored by Damien Miller | Site openssh.com

This is a Linux/portable port of OpenBSD's excellent OpenSSH. OpenSSH is based on the last free version of Tatu Ylonen's SSH with all patent-encumbered algorithms removed, all known security bugs fixed, new features reintroduced, and many other clean-ups.

Changes: Multiple updates.
tags | tool, encryption
systems | linux, unix, openbsd
SHA-256 | a323caeeddfe145baaa0db16e98d784b1fbc7dd436a6bf1f479dfd5cd1d21723
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