# CVE-2022-3620: exim4: A vulnerability was found in Exim and classified as problematic

CVE-2022-3620 is fixed in exim4 on 1 platform, first by DEBIAN-CVE-2022-3620, released October 20, 2022. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2022-3620
- Priority: Urgent
- CVSS: 9.8 (critical)
- EPSS: 0.0101
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 20, 2022

## Description

A vulnerability was found in Exim and classified as problematic. This issue affects the function dmarc_dns_lookup of the file dmarc.c of the component DMARC Handler. The manipulation leads to use after free. The attack may be initiated remotely. The name of the patch is 12fb3842f81bcbd4a4519d5728f2d7e0e3ca1445. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-211919.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | exim4 Debian 12.15 (bookworm) | 4.96-7 | [DEBIAN-CVE-2022-3620](https://patchblox.com/security/data/fix/linux/debian-cve-2022-3620.md) | Oct 20, 2022 |
| Linux | exim4 Debian 13.5 (trixie) | 4.96-7 | [DEBIAN-CVE-2022-3620](https://patchblox.com/security/data/fix/linux/debian-cve-2022-3620.md) | Oct 20, 2022 |
| Linux | exim4 Debian 14 | 4.96-7 | [DEBIAN-CVE-2022-3620](https://patchblox.com/security/data/fix/linux/debian-cve-2022-3620.md) | Oct 20, 2022 |

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