Exim DMARC dmarc.c dmarc_dns_lookup use after free
CVE-2022-3620

9.8CRITICAL

Key Information:

Vendor

Unspecified

Status
Exim
Vendor
CVE Published:
20 October 2022

What is CVE-2022-3620?

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.

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Deploy the Patch

Affected Version(s)

Exim

References

https://git.exim.org/exim.git/commit/12fb3842f81bcbd4a451...
https://vuldb.com/?id.211919
https://lists.fedoraproject.org/archives/list/package-ann...
vendor-advisory

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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