The Vigil@nce team watches public vulnerabilities impacting your computers, and then offers security solutions, a vigilance database and tools to fix them.

Vulnerability of Exim: buffer overflow

Synthesis of the vulnerability 

An attacker can generate a buffer overflow of Exim, in order to trigger a denial of service, and possibly to run code.
Impacted systems: Debian, Exim, Fedora, openSUSE Leap, SLES, Ubuntu.
Severity of this alert: 3/4.
Creation date: 12/02/2018.
Références of this alert: CERTFR-2018-ALE-004, CVE-2018-6789, DLA-1274-1, DSA-4110-1, FEDORA-2018-25a7ba3cb6, FEDORA-2018-5aec14e125, openSUSE-SU-2018:0468-1, openSUSE-SU-2021:0677-1, openSUSE-SU-2021:0753-1, openSUSE-SU-2021:0754-1, USN-3565-1, VIGILANCE-VUL-25271.

Description of the vulnerability 

An attacker can generate a buffer overflow of Exim, in order to trigger a denial of service, and possibly to run code.
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

This computer weakness announce impacts software or systems such as Debian, Exim, Fedora, openSUSE Leap, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this security alert is important.

The trust level is of type confirmed by the editor, with an origin of internet client.

A proof of concept or an attack tool is available, so your teams have to process this alert. An attacker with a beginner ability can exploit this vulnerability.

Solutions for this threat 

Exim: version 4.90.1.
The version 4.90.1 is fixed:
  https://ftp.exim.org/pub/exim/exim4/

Debian: new exim4 packages.
New packages are available:
  Debian 7: exim4 4.80-7+deb7u6
  Debian 8: exim4 4.84.2-2+deb8u5
  Debian 9: exim4 4.89-2+deb9u3

Fedora: new exim packages.
New packages are available:
  Fedora 26: exim 4.90.1-2.fc26
  Fedora 27: exim 4.90.1-2.fc27

openSUSE Leap 15.2: new exim packages.
New packages are available:
  openSUSE Leap 15.2: exim 4.94.2-lp152.8.3.1

openSUSE Leap: new exim packages.
New packages are available:
  openSUSE Leap 42.3: exim 4.86.2-20.1

SUSE LE 15 SP1: new exim packages.
New packages are available:
  SUSE LE 15 SP1: exim 4.94.2-bp151.2.4.1

SUSE LE 15 SP2: new exim packages.
New packages are available:
  SUSE LE 15 SP2: exim 4.94.2-bp152.6.4.1

Ubuntu: new exim4 packages.
New packages are available:
  Ubuntu 17.10: exim4-daemon 4.89-5ubuntu1.3
  Ubuntu 16.04 LTS: exim4-daemon 4.86.2-2ubuntu2.3
  Ubuntu 14.04 LTS: exim4-daemon 4.82-3ubuntu2.4
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

Computer vulnerabilities tracking service 

Vigil@nce provides a computers vulnerabilities watch. The Vigil@nce computer vulnerability tracking service alerts your teams of vulnerabilities or threats impacting your information system.