CVE-2020-8793 EXPLOIT
4.7
MEDIUM · CVSS 3.1 · EPSS 0.9% (pctl 59)
Patch early
A public exploit exists.
Description
OpenSMTPD before 6.6.4 allows local users to read arbitrary files (e.g., on some Linux distributions) because of a combination of an untrusted search path in makemap.c and race conditions in the offline functionality in smtpd.c.
Scoring
| CVSS | 4.7 (MEDIUM, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N |
| EPSS | 0.9% — more likely to be exploited than 59% of all CVEs |
| Weakness | CWE-367 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2020-02-25 |
| Last modified | 2026-06-17 |
Affected (3)
| Vendor | Product |
|---|---|
| canonical | ubuntu linux |
| fedoraproject | fedora |
| opensmtpd | opensmtpd |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | OpenSMTPD 6.6.3 - Arbitrary File Read | 2020-02-26 |
References
- http://seclists.org/fulldisclosure/2020/Feb/28
- http://www.openwall.com/lists/oss-security/2020/02/24/4
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OPH4QU4DNVHA7ACFXMYFCEP5PSXXPN4E/
- https://usn.ubuntu.com/4294-1/
- https://www.openbsd.org/security.html
- http://seclists.org/fulldisclosure/2020/Feb/28
- http://www.openwall.com/lists/oss-security/2020/02/24/4
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OPH4QU4DNVHA7ACFXMYFCEP5PSXXPN4E/
- https://usn.ubuntu.com/4294-1/
- https://www.openbsd.org/security.html
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