Is CVE-2017-2669 in the CISA KEV catalog?

No. CVE-2017-2669 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-2669?

CVE-2017-2669 has a CVSS v3 base score of 3.7 (LOW).

What is the EPSS score for CVE-2017-2669?

CVE-2017-2669 has an EPSS score of 4.64% (91th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2017-2669?

Upgrade dovecot on debian 11 to 1:2.2.27-3 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2017-2669

LOWEPSS 91th pctl

3.7

CVSS v3

NVD

Description

Dovecot before version 2.2.29 is vulnerable to a denial of service. When 'dict' passdb and userdb were used for user authentication, the username sent by the IMAP/POP3 client was sent through var_expand() to perform %variable expansion. Sending specially crafted %variable fields could result in excessive memory usage causing the process to crash (and restart), or excessive CPU usage causing all authentications to hang.

CWE-20Improper Input Validation

How to fix

Remediation Available

dovecotDebian

Fixed in:1:2.2.27-3CVE-2017-2669

dovecotUbuntu

Fixed in:1:2.2.22-1ubuntu2.3USN-3258-1

Fixed in:1:2.2.22-1ubuntu2.4USN-3258-2

dovecot-coreUbuntu

Fixed in:1:2.2.22-1ubuntu2.3USN-3258-1

Fixed in:1:2.2.22-1ubuntu2.4USN-3258-2

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityLow

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Exploit Intelligence

4.64%probability of exploitation in 30 days

91stpercentile

High risk: more likely to be exploited than 91% of all known CVEs.

References

Vendor Advisory1

dovecot.org

Third-Party Advisory5

Related Vulnerabilities

Other CWE-20 (Improper Input Validation) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-3400	Critical	10.0	100%	KEV + Ransom	-
CVE-2021-45105	Medium	5.9	100%	-	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-21985	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2018-7600	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-3452	High	7.5	100%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.