5.8

CVE-2011-4318: dovecot Improper Input Validation

CVSS: 5.8v2.0MediumModified
AliasesDEBIAN-CVE-2011-4318
Published 07-03-2013Last modified 07-08-2024
Open JSON

Vulnerability summary

CVE-2011-4318 is a medium (CVSS 5.8) Improper Input Validation vulnerability in dovecot. EPSS estimates a 1.32% chance of exploitation in the next 30 days, higher than 70.6% of scored vulnerabilities.

Overall risk
23/100
0100
Low · default modelHow is this calculated?
CVSS score
5.8/10
010
Medium · v2.0 (NVD)
EPSS score
1.32%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1
RHSA-2013:0520

Timeline

  1. 07-03-2013
    PublishedVulnerability first disclosed.
  2. 07-08-2024
    Last modifiedVulnerability information updated.

Description

Dovecot 2.0.x before 2.0.16, when ssl or starttls is enabled and hostname is used to define the proxy destination, does not verify that the server hostname matches a domain name in the subject's Common Name (CN) of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via a valid certificate for a different hostname.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

1.32%

Chance of exploitation in the next 30 days

Percentile

71%

Versus all other CVEs

30-day change

0.00 pp

From 1.32% on 21-09-2026

21-09-202621-10-2026
EPSS score
1.32%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • dovecot< 1:2.0.18-1
Dovecot1 product
  • dovecotEOL2.0.0 | 2.0.1 | 2.0.2 | 2.0.3 | 2.0.4 | 2.0.5 | 2.0.6 | 2.0.7 | 2.0.8 | 2.0.9 | 2.0.10 | 2.0.11 | 2.0.12 | 2.0.13 | 2.0.14 | 2.0.15

2 vendors · 2 products

References

10 links