CVE-2020-28023 : Exim 4 before 4.94.2 allows Out-of-bounds Read. smtp_setup

Exim 4 before 4.94.2 allows Out-of-bounds Read. smtp_setup_msg may disclose sensitive information from process memory to an unauthenticated SMTP client.

Published 2021-05-06 13:15:10

Updated 2021-05-10 16:15:35

Source MITRE

View at NVD, CVE.org

Products affected by CVE-2020-28023

Exim » Exim
Versions from including (>=) 4.00 and before (<) 4.94.2
cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:*
Matching versions

Threat overview for CVE-2020-28023

Top countries where our scanners detected CVE-2020-28023

Top open port discovered on systems with this issue 80

IPs affected by CVE-2020-28023 215,106

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2020-28023!

^*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2020-28023

EPSS FAQ

0.17%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 54 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-28023

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:P/I:N/A:N	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: None Availability Impact: None
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: None Availability: None

CWE ids for CVE-2020-28023

CWE-125 Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2020-28023

https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28023-SCHAD.txt

Third Party Advisory