VDB
CVE-2020-8794
CVE-2020-8794
PUBLISHED
KEV
CVSS 9.800000190734863 CRITICAL
OpenSMTPD before 6.6.4 allows remote code execution because of an out-of-bounds read in mta_io in mta_session.c for multi-line replies. Although this vulnerability affects the client side of OpenSMTPD, it is possible to attack a server because the server code launches the client code during bounce handling.
EPSS 88.90% · 99.8th percentile
Risk Scores
CVSS 3.1
9.800000190734863
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score
88.90%
99.8th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:20.04:LTS | opensmtpd | 6.6.1p1-3, 6.6.1p1-1, 6.0.3p1-6 |
| Ubuntu:18.04:LTS | opensmtpd | 0, 6.0.3p1-1, 6.0.3p1-1build1 |
| Ubuntu:Pro:16.04:LTS | opensmtpd | 0, *, 5.7.3p2-1ubuntu0.1~esm1 |
| Ubuntu:Pro:14.04:LTS | opensmtpd | 5.4.1p1-1, 5.3.3p1-4, 0 |
Timeline
- Feb 25, 2020 CVE Published
- Feb 26, 2020 PoC Published
- Mar 4, 2020 PoC Published
- Mar 6, 2020 PoC Published
- Mar 9, 2020 PoC Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Sep 14, 2021 EPSS Score
- Sep 16, 2021 EPSS Score
- Dec 27, 2021 EPSS Score
- Feb 28, 2022 EPSS Score
- May 2, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2020-8794 third-party-advisory
- https://ubuntu.com/security/notices/USN-4294-1 vendor-advisory
- https://ubuntu.com/security/notices/USN-4875-1 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2020-8794 third-party-advisory