VulnerabilityModified
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.
CRITICAL 9.8EPSS 56.8%
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 56.8%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
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 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 56.75% probability · 99th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- exim/exim
- Source
- cve@mitre.org
References
- http://www.openwall.com/lists/oss-security/2021/05/11/14Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/11/15Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/11/17Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/11/5Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/11/6Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/12/2Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/12/3Mailing List, Third Party Advisory
- https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28018-OCORK.txtVendor Advisory
- http://www.openwall.com/lists/oss-security/2021/05/11/14Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/11/15Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/11/17Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/11/5Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/11/6Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/12/2Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/12/3Mailing List, Third Party Advisory
- https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28018-OCORK.txtVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.