Exim 4 before 4.94.2 allows Buffer Underwrite that may result in unauthenticated remote attackers executing arbitrary commands, because smtp_ungetc was only intended to push back characters, but can actually push back non-character error codes such as EOF.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2021-05-06T04:31:25

Updated: 2024-08-04T16:25:44.102Z

Reserved: 2020-10-30T00:00:00

Link: CVE-2020-28024

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2021-05-06T13:15:09.720

Modified: 2022-06-28T14:11:45.273

Link: CVE-2020-28024

cve-icon Redhat

No data.