Hostname Validation Flaw in Jenkins Email Extension Plugin by Jenkins
CVE-2020-2253

4.8MEDIUM

Key Information:

Vendor

Jenkins
Status
Jenkins Email Extension Plugin
Vendor
CVE Published:
16 September 2020

What is CVE-2020-2253?

The Jenkins Email Extension Plugin versions up to 2.75 are susceptible to a vulnerability where hostname validation is not enforced when connecting to the configured SMTP server. This flaw may allow malicious SMTP servers to be inadvertently connected, potentially leading to security breaches or information leaks.

Affected Version(s)

Jenkins Email Extension Plugin <= 2.75

Jenkins Email Extension Plugin 2.69.1

Jenkins Email Extension Plugin 2.68.1

References

https://www.jenkins.io/security/advisory/2020-09-16/#SECU...
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http://www.openwall.com/lists/oss-security/2020/09/16/3
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CVSS V3.1

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2020-2253 : Hostname Validation Flaw in Jenkins Email Extension Plugin by Jenkins