CVE-2022-37452: Buffer Overflow
First published: Sun Aug 07 2022(Updated: )
Exim before 4.95 has a heap-based buffer overflow for the alias list in host_name_lookup in host.c when sender_host_name is set.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Exim Exim | <4.95 | |
| Debian Debian Linux | =10.0 |
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Reference Links
- https://github.com/Exim/exim/commit/d4bc023436e4cce7c23c5f8bb5199e178b4cc743
- https://github.com/Exim/exim/compare/exim-4.94...exim-4.95
- https://github.com/Exim/exim/wiki/EximSecurity
- https://github.com/ivd38/exim_overflow
- https://lists.debian.org/debian-lts-announce/2022/08/msg00014.html
- https://www.exim.org/static/doc/security/
- https://www.openwall.com/lists/oss-security/2022/08/06/8
Frequently Asked Questions
What is CVE-2022-37452?
CVE-2022-37452 is a vulnerability in the Exim email server that allows a heap-based buffer overflow when handling the alias list in host name lookup.
What is the severity of CVE-2022-37452?
CVE-2022-37452 has a severity rating of 9.8, which is considered critical.
Which software versions are affected by CVE-2022-37452?
Exim versions up to exclusive 4.95 and Debian Linux version 10.0 are affected by CVE-2022-37452.
How can I fix CVE-2022-37452?
To fix CVE-2022-37452, it is recommended to update to Exim version 4.95 or higher, or apply the necessary patches provided by the vendor.
What are the Common Weakness Enumeration (CWE) identifiers associated with CVE-2022-37452?
CVE-2022-37452 is associated with CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) and CWE-787 (Out-of-bounds Write).
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