CVE-2020-28024

CRITICAL

9.8

Description

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.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published5/6/2021

Last Modified11/21/2024

Sourcenvd

Honeypot Sightings0

Affected Products

exim:exim

Weaknesses (CWE)

CWE-787

References

https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28024-UNGET.txt(cve@mitre.org)

https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28024-UNGET.txt(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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