8.8

CVE-2022-30550: debian debian_linux Improper Authentication

CVSS: 8.8v3.1HighAnalyzed
AliasesALPINE-CVE-2022-30550MGASA-2022-0296SUSE-SU-2022:2431-1
Published 17-07-2022Last modified 15-10-2024
Open JSON

Vulnerability summary

CVE-2022-30550 is a high (CVSS 8.8) Improper Authentication vulnerability in debian debian_linux. EPSS estimates a 2.29% chance of exploitation in the next 30 days, higher than 83% of scored vulnerabilities.

Overall risk
36/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
2.29%
0%100%
Low · +0.07 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
DLA-3122-1

Timeline

  1. 17-07-2022
    PublishedVulnerability first disclosed.
  2. 15-10-2024
    Last modifiedVulnerability information updated.

Description

An issue was discovered in the auth component in Dovecot 2.2 and 2.3 before 2.3.20. When two passdb configuration entries exist with the same driver and args settings, incorrect username_filter and mechanism settings can be applied to passdb definitions. These incorrectly applied settings can lead to an unintended security configuration and can permit privilege escalation in certain configurations. The documentation does not advise against the use of passdb definitions that have the same driver and args settings. One such configuration would be where an administrator wishes to use the same PAM configuration or passwd file for both normal and master users but use the username_filter setting to restrict which of the users is able to be a master user.

CVSS metrics

6 scores · 6 sources · 1 version

EPSS trend

Probability

2.29%

Chance of exploitation in the next 30 days

Percentile

83%

Versus all other CVEs

30-day change

+0.07 pp

From 2.23% on 21-09-2026

21-09-202621-10-2026
EPSS score
2.29%

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

Suse30 products
  • dovecot22&distro=SUSE Linux Enterprise Server 12 SP2-BCL< 2.2.31-19.29.1
  • dovecot22&distro=SUSE Linux Enterprise Server 12 SP3-BCL< 2.2.31-19.29.1
  • dovecot22&distro=SUSE Linux Enterprise Server 12 SP4-LTSS< 2.2.31-19.29.1
  • dovecot22&distro=SUSE Linux Enterprise Server 12 SP5< 2.2.31-19.29.1
  • dovecot22&distro=SUSE Linux Enterprise Server for SAP Applications 12 SP4< 2.2.31-19.29.1
Redhat10 products
  • dovecot< 1:2.3.16-3.el8 | < 1:2.3.16-7.el9
  • dovecot-debuginfo< 1:2.3.16-3.el8 | < 1:2.3.16-7.el9
  • dovecot-debugsource< 1:2.3.16-3.el8 | < 1:2.3.16-7.el9
  • dovecot-devel< 1:2.3.16-3.el8 | < 1:2.3.16-7.el9
  • dovecot-mysql< 1:2.3.16-3.el8 | < 1:2.3.16-7.el9
Debian2 products
Opensuse2 products
  • dovecot23&distro=openSUSE Leap 15.3< 2.3.15-150200.62.1
  • dovecot23&distro=openSUSE Leap 15.4< 2.3.15-150200.62.1
Alpine1 product
  • dovecot≥ 2.3, < 2.3.19.1-r5
Dovecot1 product
Mageia1 product
  • dovecot< 2.3.17.1-1.2.mga8
Ubuntu1 product
  • dovecotAll versions (No fix recorded) | < 1:2.2.33.2-1ubuntu4.8 | < 1:2.3.7.2-1ubuntu3.6 | < 1:2.3.16+dfsg1-3ubuntu2.1

8 vendors · 48 products

References

35 links
Show all 35 references