CVE-2020-24386
MEDIUMCVSS 6.8/10EPSS 2.75%
Last modified
CVE-2020-24386 is a medium-severity vulnerability rated 6.8/10 on the CVSS scale. An issue was discovered in Dovecot before 2.3.13. By using IMAP IDLE, an authenticated attacker can trigger unhibernation via attacker-controlled parameters, leading to access to other users' email messages (and path disclosure).. EPSS estimates a 2.75% chance of exploitation in the next 30 days.
Description
An issue was discovered in Dovecot before 2.3.13. By using IMAP IDLE, an authenticated attacker can trigger unhibernation via attacker-controlled parameters, leading to access to other users' email messages (and path disclosure).
Metrics
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Dovecot | Dovecot | >= 2.2.26, < 2.3.13 |
| Debian | Debian Linux | 10.0 |
| Fedoraproject | Fedora | 32 |
References
- http://packetstormsecurity.com/files/160842/Dovecot-2.3.11.3-Access-Bypass.htmlMailing List, Third Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2021/Jan/18Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/01/04/4Mailing List, Third Party Advisory
- https://doc.dovecot.org/configuration_manual/hibernation/Vendor Advisory
- https://dovecot.org/pipermail/dovecot-news/2021-January/000450.htmlMailing List, Vendor Advisory
- https://dovecot.org/securityVendor Advisory
- https://security.gentoo.org/glsa/202101-01Third Party Advisory
- https://www.debian.org/security/2021/dsa-4825Third Party Advisory
- http://packetstormsecurity.com/files/160842/Dovecot-2.3.11.3-Access-Bypass.htmlMailing List, Third Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2021/Jan/18Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/01/04/4Mailing List, Third Party Advisory
- https://doc.dovecot.org/configuration_manual/hibernation/Vendor Advisory
- https://dovecot.org/pipermail/dovecot-news/2021-January/000450.htmlMailing List, Vendor Advisory
- https://dovecot.org/securityVendor Advisory
- https://security.gentoo.org/glsa/202101-01Third Party Advisory
- https://www.debian.org/security/2021/dsa-4825Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-24386?
An issue was discovered in Dovecot before 2.3.13. By using IMAP IDLE, an authenticated attacker can trigger unhibernation via attacker-controlled parameters, leading to access to other users' email messages (and path disclosure).
How severe is CVE-2020-24386?
CVE-2020-24386 has a CVSS score of 6.8/10 (MEDIUM severity). The EPSS model estimates a 2.75% probability of exploitation in the next 30 days.
How do I fix CVE-2020-24386?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2020-24386?
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