Vulnerability Description
The JSON encoder in Dovecot before 2.3.5.2 allows attackers to repeatedly crash the authentication service by attempting to authenticate with an invalid UTF-8 sequence as the username.
CVSS Score
7.5
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Dovecot | Dovecot | < 2.3.5.2 |
| Opensuse | Leap | 15.0 |
References
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00000.htmlMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2019/04/18/3Mailing ListThird Party Advisory
- https://dovecot.org/list/dovecot-news/2019-April/000406.htmlMailing ListVendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.gentoo.org/glsa/201908-29
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00000.htmlMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2019/04/18/3Mailing ListThird Party Advisory
- https://dovecot.org/list/dovecot-news/2019-April/000406.htmlMailing ListVendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.gentoo.org/glsa/201908-29
FAQ
What is CVE-2019-10691?
CVE-2019-10691 is a vulnerability with a CVSS score of 7.5 (HIGH). The JSON encoder in Dovecot before 2.3.5.2 allows attackers to repeatedly crash the authentication service by attempting to authenticate with an invalid UTF-8 sequence as the username.
How severe is CVE-2019-10691?
CVE-2019-10691 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-10691?
Check the references section above for vendor advisories and patch information. Affected products include: Dovecot Dovecot, Opensuse Leap.