Explore top 10 tips to secure your open-source projects now. Read More

×
Alerts This Week
Warning Icon 1 433
Alerts This Week
Warning Icon 1 433

Ubuntu 19.04 LTS Advisory USN-4075-1: Exim Arbitrary Code Execution

ubuntu
Calendar Grey July 25, 2019
Dist Ubuntu Esm H88
A critical flaw in Exim on Ubuntu enables remote adversaries to execute commands with elevated privileges. Immediate patching is recommended for safety.
Exim could be made to run programs as an administrator if it received specially crafted network traffic.

Summary

Exim could be made to run programs as an administrator if it received

specially crafted network traffic.

Software Description:

- exim4: Exim is a mail transport agent

Details:

Jeremy Harris discovered that Exim incorrectly handled sort expansions. In

environments where sort expansions are used, a remote attacker could

possibly use this issue to execute arbitrary code as root.

Topics%20covered

Topics Covered

security advisory exim arbitrary code ubuntu network attack

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 19.04:
  exim4-daemon-heavy              4.92-4ubuntu1.2
  exim4-daemon-light              4.92-4ubuntu1.2

Ubuntu 18.04 LTS:
  exim4-daemon-heavy              4.90.1-1ubuntu1.3
  exim4-daemon-light              4.90.1-1ubuntu1.3

Ubuntu 16.04 LTS:
  exim4-daemon-heavy              4.86.2-2ubuntu2.4
  exim4-daemon-light              4.86.2-2ubuntu2.4

In general, a standard system update will make all the necessary changes.

References

CVE-2019-13917

Severity
critical
Lowest
Low
Medium
High
Critical

July 25, 2019

Topics%20covered

Topics Covered

security advisory exim arbitrary code ubuntu network attack

Package Information

https://launchpad.net/ubuntu/+source/exim4/4.92-4ubuntu1.2
https://launchpad.net/ubuntu/+source/exim4/4.90.1-1ubuntu1.3
https://launchpad.net/ubuntu/+source/exim4/4.86.2-2ubuntu2.4

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.