PT-2022-3996 · Exim+4 · Exim+4

Evgeny Legerov · CVE-2022-37452 · Published 2022-08-07 · Updated 2023-08-25

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Exim versions prior to 4.95

Description The issue is related to a heap-based buffer overflow in the host name lookup function in host.c when sender host name is set. This can potentially allow a remote attacker to impact the confidentiality, integrity, and availability of protected information.

Recommendations For versions prior to 4.95, update to version 4.95 or later to resolve the issue. As a temporary workaround, consider restricting the use of the sender host name setting until a patch is available.

Exploit

Fix

Memory Corruption

Heap Based Buffer Overflow

Weakness Enumeration

CWE-787

CWE-122

Related Identifiers

ALT-PU-2023-4105

ALT-PU-2023-4919

ALT-PU-2023-4920

ALT-PU-2023-5120

BDU:2022-04829

CVE-2022-37452

DLA-3082-1

USN-5574-1

Affected Products

Alt Linux

Astra Linux

Exim

Linuxmint

Ubuntu

References · 30

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/37xxx/CVE-2022-37452.json · Exploit
• 🔥❌ https://github.com/ivd38/exim_overflow · Exploit, Deleted
• https://github.com/Exim/exim/compare/exim-4.94...exim-4.95 · Patch
• https://github.com/Exim/exim/commit/d4bc023436e4cce7c23c5f8bb5199e178b4cc743 · Patch
• https://wiki.astralinux.ru/astra-linux-se47-bulletin-2022-1121SE47 · Vendor Advisory
• https://osv.dev/vulnerability/USN-5574-1 · Vendor Advisory
• https://goslinux.fssp.gov.ru/2726972 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-37452 · Vendor Advisory
• https://exim.org/static/doc/security · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-37452 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-37452 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se81-bulletin-20241206SE81 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-37452 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-37452 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-3082-1 · Vendor Advisory