PT-2020-6037 · Exim+5 · Exim+5
Published
2020-10-20
·
Updated
2024-06-15
·
CVE-2020-28011
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Exim versions prior to 4.94.2
Description
The issue is related to a Heap-based Buffer Overflow in the
queue run function of the Exim mail transfer agent. This overflow can be triggered via two sender options: -R and -S. The exploitation of this issue may lead to privilege escalation from the Exim user to the root user, potentially allowing an attacker to execute arbitrary code.Recommendations
For Exim versions prior to 4.94.2, update to version 4.94.2 or later to resolve the issue. As a temporary workaround, consider restricting the use of the
-R and -S sender options until a patch is applied.Exploit
Fix
Heap Based Buffer Overflow
Memory Corruption
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Related Identifiers
Affected Products
Alt Linux
Astra Linux
Exim
Linuxmint
Suse
Ubuntu