CVE-2020-28016 : Exim 4 before 4.94.2 allows an off-by-two Out-of-bounds Write because "-F ''" is

Exim 4 before 4.94.2 allows an off-by-two Out-of-bounds Write because "-F ''" is mishandled by parse_fix_phrase.

Published 2021-05-06 13:15:10

Updated 2021-05-10 18:40:59

Source MITRE

View at NVD, CVE.org

Vulnerability category: Memory Corruption

Products affected by CVE-2020-28016

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

Top countries where our scanners detected CVE-2020-28016

Top open port discovered on systems with this issue 80

IPs affected by CVE-2020-28016 197,041

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2020-28016!

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

EPSS FAQ

0.04%

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

~ 10 %

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

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
7.2	HIGH	AV:L/AC:L/Au:N/C:C/I:C/A:C	3.9	10.0	NIST
Access Vector: Local Access Complexity: Low Authentication: None Confidentiality Impact: Complete Integrity Impact: Complete Availability Impact: Complete
7.8	HIGH	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	1.8	5.9	NIST
Attack Vector: Local Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE-787 Out-of-bounds Write

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

Assigned by: nvd@nist.gov (Primary)

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