Ubuntu update for dovecot



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-25275
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Ubuntu
Operating systems & Components / Operating system

dovecot-core (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Input validation error

EUVDB-ID: #VU49238

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-25275

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input when processing messages with more than 10 000 MIME parts. A remote attacker can send a specially crafted message to the application and perform a denial of service (DoS) attack.

Note, this vulnerability was introduced by the fix for #VU45671.

Mitigation

Update the affected package dovecot to the latest version.

Vulnerable software versions

Ubuntu: 14.04

dovecot-core (Ubuntu package): before 1:2.2.9-1ubuntu2.6+esm4

CPE2.3 External links

https://ubuntu.com/security/notices/USN-4674-2


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



###SIDEBAR###