CVE-2018-6789

CVE-2018-6789 is an Exim SMTP base64d buffer overflow vulnerability. The issue resides in the base64d function of Exim’s SMTP listener prior to version 4.90.1, where a handcrafted EHLO/message can cause a heap/buffer overflow and enable remote code execution. Multiple sources confirm the vulnerab...

CVE-2018-6789

An issue was discovered in the base64d function in the SMTP listener in Exim before 4.90.1. By sending a handcrafted message, a buffer overflow may happen. This can be used to execute code remotely...

CVE-2018-6789

An issue was discovered in the base64d function in the SMTP listener in Exim before 4.90.1. By sending a handcrafted message, a buffer overflow may happen. This can be used to execute code remotely...

CVE-2018-6789

An issue was discovered in the base64d function in the SMTP listener in Exim before 4.90.1. By sending a handcrafted message, a buffer overflow may happen. This can be used to execute code remotely. Recent assessments: gwillcox-r7 at October 20, 2020 6:46pm UTC reported: This is now supposedly...

Exim SMTP server RCE via base64d

Exim SMTP email server versions before 4.90 are vulnerable to remote code execution via a vulnerability in Base64 decoding. Recent assessments: asoto-r7 at June 25, 2019 6:25pm UTC reported: There are a few PoCs for this one. Exim is a bear to setup and I wouldn’t be shocked to find unpatched...

UBUNTU-CVE-2018-6789

An issue was discovered in the base64d function in the SMTP listener in Exim before 4.90.1. By sending a handcrafted message, a buffer overflow may happen. This can be used to execute code remotely...

CVE-2018-6789

An issue was discovered in the base64d function in the SMTP listener in Exim before 4.90.1. By sending a handcrafted message, a buffer overflow may happen. This can be used to execute code remotely...

exim -- a buffer overflow vulnerability, remote code execution

Exim developers report: There is a buffer overflow in base64d, if some pre-conditions are met. Using a handcrafted message, remote code execution seems to be possible...

PT-2018-1057 · Exim +3 · Exim +3

Name of the Vulnerable Software and Affected Versions: Exim versions prior to 4.90.1 Description: An issue in the base64d function in the SMTP listener of Exim can cause a buffer overflow when processing handcrafted messages. This can be exploited to execute code remotely. The vulnerability is...

Fedora 27 : exim (2017-0053bb9719)

This is an update fixing denial of service CVE-2017-16944. ---- This is an update fixing use-after-free CVE-2017-16943. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and...

Amazon Linux AMI : exim (ALAS-2017-932)

Use-after-free in receivemsg function via vectors involving BDAT commands The receivemsg function in receive.c in the SMTP daemon in Exim 4.88 and 4.89 allows remote attackers to execute arbitrary code or cause a denial of service use-after-free via vectors involving BDAT commands. CVE-2017-16943...

Critical: exim

Issue Overview: Use-after-free in receivemsg function via vectors involving BDAT commands The receivemsg function in receive.c in the SMTP daemon in Exim 4.88 and 4.89 allows remote attackers to execute arbitrary code or cause a denial of service use-after-free via vectors involving BDAT commands...

openSUSE Security Update : exim (openSUSE-2017-1342)

This update for exim fixes the following issues : Security issue fixed : - CVE-2017-16943: Fix possible remote code execution boo1069857. %NASLMINLEVEL 70300 C Tenable Network Security, Inc. The descriptive text and package checks in this plugin were extracted from openSUSE Security Update...

Fedora Update for exim FEDORA-2017-0032baa7d7

The remote host is missing an update for the SPDX-FileCopyrightText: 2017 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...

Fedora Update for exim FEDORA-2017-0053bb9719

The remote host is missing an update for the SPDX-FileCopyrightText: 2017 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...

Fedora 26 : exim (2017-0032baa7d7)

This is an update fixing denial of service CVE-2017-16944. ---- This is an update fixing use-after-free CVE-2017-16943. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and...

[SECURITY] Fedora 26 Update: exim-4.89-7.fc26

Exim is a message transfer agent MTA developed at the University of Cambridge for use on Unix systems connected to the Internet. It is freely available under the terms of the GNU General Public Licence. In style it is similar to Smail 3, but its facilities are more general. There is a great deal ...

[SECURITY] Fedora 27 Update: exim-4.89-7.fc27

Exim is a message transfer agent MTA developed at the University of Cambridge for use on Unix systems connected to the Internet. It is freely available under the terms of the GNU General Public Licence. In style it is similar to Smail 3, but its facilities are more general. There is a great deal ...

Internet Bug Bounty: Exim handles BDAT data incorrectly and leads to crash/hang

Original article is here Incorrect BDAT data handling leads to DoS Vulnerability Analysis When receiving data with BDAT command, SMTP server should not consider a single dot ‘.’ in a line to be the end of message. However, we found exim does in receivemsg when parsing header. Like the following...

Internet Bug Bounty: Exim use-after-free vulnerability while reading mail header involving BDAT commands

Original article is here Use-after-free in receivemsg leads to RCE Vulnerability Analysis To explain this bug, we need to start with the memory management of exim. There is a series of functions starts with store such as storeget, storerelease, storereset. These functions are used to manage...