OpenBSD OpenSMTPD Remote Code Execution Vulnerability (CVE-2020-7247)

Qualys Research Labs discovered a vulnerability in OpenBSD's OpenSMTPD mail server that allows an attacker to execute arbitrary shell commands with elevated privileges. OpenBSD developers have confirmed the vulnerability and also quickly provided a patch. Proof-of-concept exploits are published i...

Input validation

smtpmailaddr in smtpsession.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 metacharacters in a MAIL FROM field. This affects the "uncommented" default configuration...

CVE-2020-7247

CVE-2020-7247 affects OpenSMTPD 6.6 (OpenBSD 6.6 and others). The smtp_mailaddr() check in smtp_session.c can pass malformed local-parts with an empty domain, due to an incorrect return value on input validation, enabling remote root code execution via a crafted SMTP session (MAIL FROM) on the de...

CVE-2020-7247

smtpmailaddr in smtpsession.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 metacharacters in a MAIL FROM field. This affects the "uncommented" default configuration...

OpenBSD OpenSMTPD Privilege Escalation / Code Execution Vulnerabilities

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. OpenBSD OpenSMTPD Privilege Escalation / Code Execution...

[ASA-202001-6] opensmtpd: arbitrary command execution

Arch Linux Security Advisory ASA-202001-6 ========================================= Severity: Critical Date : 2020-01-29 CVE-ID : CVE-2020-7247 Package : opensmtpd Type : arbitrary command execution Remote : Yes Link : https://security.archlinux.org/AVG-1090 Summary ======= The package opensmtpd...

OpenBSD OpenSMTPD Privilege Escalation / Code Execution

Qualys Security Advisory LPE and RCE in OpenSMTPD CVE-2020-7247 ============================================================================== Contents ============================================================================== Summary Analysis Exploitation Acknowledgments...

Huawei EulerOS: Security Advisory for libXfont (EulerOS-SA-2019-2357)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2020 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

OpenBSD 6.6 Multiple Authentication Bypass Vulnerabilities

Binary data openbsdauthbypass.nbin...

OpenBSD - Dynamic Loader chpass Privilege Escalation (Metasploit)

This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework class MetasploitModule 'OpenBSD Dynamic Loader chpass Privilege Escalation', 'Description' = %q This module exploits a vulnerability in the OpenBSD ld.so dynamic loader...

OpenBSD Dynamic Loader chpass Privilege Escalation Exploit

This Metasploit module exploits a vulnerability in the OpenBSD ld.so dynamic loader CVE-2019-19726. The dlgetenv function fails to reset the LDLIBRARYPATH environment variable when set with approximately ARGMAX colons. This can be abused to load libutil.so from an untrusted path, using...

OpenBSD Dynamic Loader chpass Privilege Escalation

This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework class MetasploitModule 'OpenBSD Dynamic Loader chpass Privilege Escalation', 'Description' = %q This module exploits a vulnerability in the OpenBSD ld.so dynamic loader...

OpenBSD 6.x - Dynamic Loader Privilege Escalation Exploit

Local Privilege Escalation in OpenBSD's dynamic loader CVE-2019-19726 ============================================================================== Contents ============================================================================== Summary Analysis Demonstration Acknowledgments...

OpenBSD 6.x - Dynamic Loader Privilege Escalation

Qualys Security Advisory Local Privilege Escalation in OpenBSD's dynamic loader CVE-2019-19726 ============================================================================== Contents ============================================================================== Summary Analysis Demonstration...

CVE-2019-19726

OpenBSD through 6.6 allows local users to escalate to root because a check for LDLIBRARYPATH in setuid programs can be defeated by setting a very small RLIMITDATA resource limit. When executing chpass or passwd which are setuid root, dlsetupenv in ld.so tries to strip LDLIBRARYPATH from the...

CVE-2019-19726

OpenBSD through 6.6 allows local users to escalate to root because a check for LDLIBRARYPATH in setuid programs can be defeated by setting a very small RLIMITDATA resource limit. When executing chpass or passwd which are setuid root, dlsetupenv in ld.so tries to strip LDLIBRARYPATH from the...

Code injection

OpenBSD through 6.6 allows local users to escalate to root because a check for LDLIBRARYPATH in setuid programs can be defeated by setting a very small RLIMITDATA resource limit. When executing chpass or passwd which are setuid root, dlsetupenv in ld.so tries to strip LDLIBRARYPATH from the...

OpenBSD Local Privilege Escalation Vulnerability (CVE-2019-19726)

Qualys Research Labs discovered a local privilege escalation vulnerability in OpenBSD's dynamic loader. The vulnerability could allow local users or malicious software to gain full root privileges. OpenBSD developers have confirmed the vulnerability and released security patches in less than 3...

CVE-2019-19726

OpenBSD through 6.6 allows local users to escalate to root because a check for LDLIBRARYPATH in setuid programs can be defeated by setting a very small RLIMITDATA resource limit. When executing chpass or passwd which are setuid root, dlsetupenv in ld.so tries to strip LDLIBRARYPATH from the...

OpenBSD Elevation of Privilege Vulnerability

OpenBSD is a cross-platform, BSD-based UNIX-like operating system from the Canadian OpenBSD project team. An elevation of privilege vulnerability exists in OpenBSD 6.6 and earlier versions, which can be exploited by a local attacker to elevate privileges to root, and then execute his own library...