Weak Session Encryption in Fetchmail Affects IMAP Users
CVE-2021-39272

5.9MEDIUM

Key Information:

Vendor

Fetchmail

Status
Fetchmail
Vendor
CVE Published:
30 August 2021

What is CVE-2021-39272?

Fetchmail versions before 6.4.22 are susceptible to a vulnerability that compromises STARTTLS session encryption under specific conditions, particularly when interacting with IMAP and the PREAUTH mechanism. This flaw may enable attackers to exploit unencrypted communications, leading to potential exposure of sensitive data. It is crucial for users to upgrade to the latest version to mitigate these security risks.

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References

https://www.fetchmail.info/security.html
x_refsource_MISC
https://nostarttls.secvuln.info/
x_refsource_MISC
http://www.openwall.com/lists/oss-security/2021/08/27/3
x_refsource_MISC

CVSS V3.1

Score:
5.9
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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