Vulnerability Description
Exim 4 before 4.94.2 allows Use After Free in smtp_reset in certain situations that may be common for builds with OpenSSL.
CVSS Score
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Exim | Exim | >= 4.90, < 4.94.2 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2021/05/11/14Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/11/15Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/11/17Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/11/5Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/11/6Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/12/2Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/12/3Mailing ListThird Party Advisory
- https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28018-OCORK.txVendor Advisory
- http://www.openwall.com/lists/oss-security/2021/05/11/14Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/11/15Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/11/17Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/11/5Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/11/6Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/12/2Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/12/3Mailing ListThird Party Advisory
FAQ
What is CVE-2020-28018?
CVE-2020-28018 is a vulnerability with a CVSS score of 9.8 (CRITICAL). Exim 4 before 4.94.2 allows Use After Free in smtp_reset in certain situations that may be common for builds with OpenSSL.
How severe is CVE-2020-28018?
CVE-2020-28018 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2020-28018?
Check the references section above for vendor advisories and patch information. Affected products include: Exim Exim.