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Exim CVE-2021-38371

HIGH
Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') (CWE-74)
2021-08-10 cve@mitre.org
7.5
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

Lifecycle Timeline

1
CVE Published
Aug 10, 2021 - 15:15 nvd
HIGH 7.5

DescriptionNVD

The STARTTLS feature in Exim through 4.94.2 allows response injection (buffering) during MTA SMTP sending.

AnalysisAI

The STARTTLS feature in Exim through 4.94.2 allows response injection (buffering) during MTA SMTP sending. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-74. The STARTTLS feature in Exim through 4.94.2 allows response injection (buffering) during MTA SMTP sending. Affected products include: Exim. Version information: through 4.94.2.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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CVE-2021-38371 vulnerability details – vuln.today

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