Vulnerability Description
Exim 4 before 4.92 allows Integer Overflow to Buffer Overflow, in which an unauthenticated remote attacker can execute arbitrary code by leveraging the mishandling of continuation lines during header-length restriction.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Exim | Exim | >= 4.00, < 4.92 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2021/07/25/1Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/08/03/1Mailing ListThird Party Advisory
- https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28020-HSIZE.txPatchThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/07/25/1Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/08/03/1Mailing ListThird Party Advisory
- https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28020-HSIZE.txPatchThird Party Advisory
FAQ
What is CVE-2020-28020?
CVE-2020-28020 is a vulnerability with a CVSS score of 9.8 (CRITICAL). Exim 4 before 4.92 allows Integer Overflow to Buffer Overflow, in which an unauthenticated remote attacker can execute arbitrary code by leveraging the mishandling of continuation lines during header-...
How severe is CVE-2020-28020?
CVE-2020-28020 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-2020-28020?
Check the references section above for vendor advisories and patch information. Affected products include: Exim Exim.