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).
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Dovecot | Dovecot | 2.2.26 (including) | 2.3.13 (excluding) |
| Red Hat Enterprise Linux 8 | RedHat | dovecot-1:2.3.8-9.el8 | * |
| Dovecot | Ubuntu | bionic | * |
| Dovecot | Ubuntu | devel | * |
| Dovecot | Ubuntu | esm-infra/bionic | * |
| Dovecot | Ubuntu | esm-infra/focal | * |
| Dovecot | Ubuntu | focal | * |
| Dovecot | Ubuntu | groovy | * |
| Dovecot | Ubuntu | trusty | * |
| Dovecot | Ubuntu | upstream | * |
References
- http://packetstormsecurity.com/files/160842/Dovecot-2.3.11.3-Access-Bypass.html
- http://seclists.org/fulldisclosure/2021/Jan/18
- http://www.openwall.com/lists/oss-security/2021/01/04/4
- https://doc.dovecot.org/configuration_manual/hibernation/
- https://dovecot.org/pipermail/dovecot-news/2021-January/000450.html
- https://dovecot.org/security
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GXDKFLOCUP7I4ELGQ2F4P5TGC6NXMYV7/
- https://security.gentoo.org/glsa/202101-01
- https://www.debian.org/security/2021/dsa-4825
- http://packetstormsecurity.com/files/160842/Dovecot-2.3.11.3-Access-Bypass.html
- http://seclists.org/fulldisclosure/2021/Jan/18
- http://www.openwall.com/lists/oss-security/2021/01/04/4
- https://doc.dovecot.org/configuration_manual/hibernation/
- https://dovecot.org/pipermail/dovecot-news/2021-January/000450.html
- https://dovecot.org/security
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GXDKFLOCUP7I4ELGQ2F4P5TGC6NXMYV7/
- https://security.gentoo.org/glsa/202101-01
- https://www.debian.org/security/2021/dsa-4825