Vulnerability Description
The IMAP and LMTP components in Dovecot 2.3.9 before 2.3.9.3 mishandle snippet generation when many characters must be read to compute the snippet and a trailing > character exists. This causes a denial of service in which the recipient cannot read all of their messages.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Dovecot | Dovecot | >= 2.3.9, < 2.3.9.3 |
| Fedoraproject | Fedora | 30 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2020/02/12/2ExploitMailing ListThird Party Advisory
- https://dovecot.org/pipermail/dovecot-news/2020-February/000430.htmlExploitMailing ListVendor Advisory
- https://dovecot.org/securityVendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- http://www.openwall.com/lists/oss-security/2020/02/12/2ExploitMailing ListThird Party Advisory
- https://dovecot.org/pipermail/dovecot-news/2020-February/000430.htmlExploitMailing ListVendor Advisory
- https://dovecot.org/securityVendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
FAQ
What is CVE-2020-7957?
CVE-2020-7957 is a vulnerability with a CVSS score of 5.3 (MEDIUM). The IMAP and LMTP components in Dovecot 2.3.9 before 2.3.9.3 mishandle snippet generation when many characters must be read to compute the snippet and a trailing > character exists. This causes a deni...
How severe is CVE-2020-7957?
CVE-2020-7957 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-7957?
Check the references section above for vendor advisories and patch information. Affected products include: Dovecot Dovecot, Fedoraproject Fedora.