Vulnerability Details : CVE-2020-28018
Exim 4 before 4.94.2 allows Use After Free in smtp_reset in certain situations that may be common for builds with OpenSSL.
Vulnerability category: Memory Corruption
Products affected by CVE-2020-28018
- cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:*
Threat overview for CVE-2020-28018
Top countries where our scanners detected CVE-2020-28018
Top open port discovered on systems with this issue
80
IPs affected by CVE-2020-28018 187,825
Threat actors abusing to this issue?
Yes
Find out if you* are
affected by CVE-2020-28018!
*Directly or indirectly through your vendors, service providers and 3rd parties.
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attack surface intelligence
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Exploit prediction scoring system (EPSS) score for CVE-2020-28018
3.35%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 90 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-28018
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2020-28018
-
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-28018
-
http://www.openwall.com/lists/oss-security/2021/05/11/5
oss-security - [CVE-2020-28018] Use-After-Free on Exim QuestionMailing List;Third Party Advisory
-
http://www.openwall.com/lists/oss-security/2021/05/11/17
oss-security - Re: [CVE-2020-28018] Use-After-Free on Exim QuestionMailing List;Third Party Advisory
-
http://www.openwall.com/lists/oss-security/2021/05/12/2
oss-security - Re: [CVE-2020-28018] Use-After-Free on Exim QuestionMailing List;Third Party Advisory
-
http://www.openwall.com/lists/oss-security/2021/05/12/3
oss-security - Re: [CVE-2020-28018] Use-After-Free on Exim QuestionMailing List;Third Party Advisory
-
https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28018-OCORK.txt
Vendor Advisory
-
http://www.openwall.com/lists/oss-security/2021/05/11/15
oss-security - Re: [CVE-2020-28018] Use-After-Free on Exim QuestionMailing List;Third Party Advisory
-
http://www.openwall.com/lists/oss-security/2021/05/11/6
oss-security - Re: [CVE-2020-28018] Use-After-Free on Exim QuestionMailing List;Third Party Advisory
-
http://www.openwall.com/lists/oss-security/2021/05/11/14
oss-security - Re: [CVE-2020-28018] Use-After-Free on Exim QuestionMailing List;Third Party Advisory
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