PT-2020-6047 · Exim+5 · Exim+5

Published 2020-10-20 · Updated 2024-06-15 · CVE-2020-28022

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/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 improper restriction of write operations within the bounds of a memory buffer when processing name=value pairs within MAIL FROM and RCPT TO commands. This can be exploited by a remote attacker to execute arbitrary code by sending a specially crafted message to the mail server.

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 access to the mail server to minimize the risk of exploitation.

Exploit

Fix

Buffer Overflow

Memory Corruption

Weakness Enumeration

CWE-119

CWE-787

Related Identifiers

ALT-PU-2021-1764

ALT-PU-2022-2269

BDU:2021-02765

CVE-2020-28022

DLA-2650-1

DSA-4912-1

OPENSUSE-SU-2021:0677-1

OPENSUSE-SU-2021:0753-1

OPENSUSE-SU-2021:0754-1

OPENSUSE-SU-2021_0677-1

OPENSUSE-SU-2024:10746-1

USN-4934-1

USN-4934-2

Affected Products

Alt Linux

Astra Linux

Exim

Linuxmint

Suse

Ubuntu

References · 106

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/local/exim4_deliver_message_priv_esc.rb · Exploit
• 🔥 https://github.com/qazbnm456/awesome-cve-poc/blob/master/Stack-Clash.md · Exploit
• 🔥 https://github.com/synacktiv/Exim-CVE-2019-15846 · Exploit
• 🔥 https://github.com/LetUsFsck/PoC-Exploit-Mirror/tree/master/CVE-2017-16944 · Exploit
• 🔥 https://github.com/Diefunction/CVE-2019-10149 · Exploit
• 🔥 https://github.com/cowbe0x004/eximrce-CVE-2019-10149 · Exploit
• 🔥 https://github.com/MNEMO-CERT/PoC--CVE-2019-10149_Exim · Exploit
• 🔥 https://github.com/martinclauss/exim-rce-cve-2018-6789 · Exploit
• 🔥 https://github.com/synacktiv/Exim-CVE-2018-6789 · Exploit
• 🔥 https://github.com/AzizMea/CVE-2019-10149-privilege-escalation · Exploit
• 🔥 https://github.com/darsigovrustam/CVE-2019-10149 · Exploit
• 🔥 https://github.com/dorkerdevil/CVE-2020-28018 · Exploit
• 🔥 https://github.com/cloudflare/exim-cve-2019-10149-data · Exploit
• 🔥❌ https://github.com/lmol/CVE-2020-28018 · Exploit, Deleted
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-28022 · Vendor Advisory