GLSA 202003-47: Exim: Heap-based buffer overflow
| Severity: | high |
| Title: | Exim: Heap-based buffer overflow |
| Date: | 03/20/2020 |
| Bugs: | |
| ID: | 202003-47 |
Synopsis
A vulnerability in Exim could allow a remote attacker to execute arbitrary code.Background
Exim is a message transfer agent (MTA) designed to be a a highly configurable, drop-in replacement for sendmail.
Affected packages
| Package | Vulnerable | Unaffected | Architecture(s) |
|---|---|---|---|
| mail-mta/exim | < 4.92.3 | >= 4.92.3 | All supported architectures |
Description
It was discovered that Exim incorrectly handled certain string operations.
Impact
A remote attacker, able to connect to a vulnerable Exim instance, could possibly execute arbitrary code with the privileges of the process or cause a Denial of Service condition.
Workaround
There is no known workaround at this time.
Resolution
All Exim users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=mail-mta/exim-4.92.3"
References
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
Concerns?
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
License
Copyright 2010 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.