CVE-2021-28374
Scores
EPSS
Percentile: 0.0%
CVSS
CVSS Score: 7.5/10
All CVSS Scores
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Vector Breakdown
CVSS (Common Vulnerability Scoring System) vector provides detailed metrics about vulnerability characteristics
CVSS
Attack Vector
Network (N)
Describes how the vulnerability is exploited
Attack Complexity
Low (L)
Describes the conditions beyond the attacker's control
Privileges Required
None (N)
Describes the level of privileges an attacker must possess
User Interaction
None (N)
Captures the requirement for a human user participation
Scope
Unchanged (U)
Determines if a successful attack impacts components beyond the vulnerable component
Confidentiality Impact
High (H)
Measures the impact to the confidentiality of information
Integrity Impact
None (N)
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
None (N)
Measures the impact to the availability of the impacted component
Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N
Vector Breakdown
CVSS (Common Vulnerability Scoring System) vector provides detailed metrics about vulnerability characteristics
CVSS
Attack Vector
Network (N)
Describes how the vulnerability is exploited
Attack Complexity
Low (L)
Describes the conditions beyond the attacker's control
Authentication
None (N)
Describes the level of privileges an attacker must possess
Confidentiality Impact
Partial
Measures the impact to the confidentiality of information
Integrity Impact
None (N)
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
None (N)
Measures the impact to the availability of the impacted component
Description
The Debian courier-authlib package before 0.71.1-2 for Courier Authentication Library creates a /run/courier/authdaemon directory with weak permissions, allowing an attacker to read user information. This may include a cleartext password in some configurations. In general, it includes the user’s existence, uid and gids, home and/or Maildir directory, quota, and some type of password information (such as a hash).
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Sources
CWEs
Vulnerable Software (14)
Type: Configuration
Product: courier-authlib
Operating System: ubuntu bionic 18.04
{ "unfixed": true}
Source: ubuntu
Type: Configuration
Product: courier-authlib
Operating System: ubuntu focal 20.04
{ "unfixed": true}
Source: ubuntu
Type: Configuration
Product: courier-authlib
Operating System: ubuntu groovy 20.10
{ "unfixed": true}
Source: ubuntu
Type: Configuration
Product: courier-authlib
Operating System: ubuntu hirsute 21.04
{ "unfixed": true}
Source: ubuntu
Type: Configuration
Product: courier-authlib
Operating System: ubuntu impish 21.10
{ "unfixed": true}
Source: ubuntu
Type: Configuration
Product: courier-authlib
Operating System: ubuntu jammy 22.04
{ "unfixed": true}
Source: ubuntu
Type: Configuration
Product: courier-authlib
Operating System: ubuntu kinetic 22.10
{ "unfixed": true}
Source: ubuntu
Type: Configuration
Product: courier-authlib
Operating System: ubuntu lunar 23.04
{ "unaffected": true}
Source: ubuntu
Type: Configuration
Product: courier-authlib
Operating System: ubuntu trusty 14.04
{ "unfixed": true}
Source: ubuntu
Type: Configuration
Product: courier-authlib
Operating System: ubuntu xenial 16.04
{ "unfixed": true}
Source: ubuntu
Type: Configuration
Product: courier-authlib
Operating System: debian
{ "fixed": "0.71.1-2"}
Source: debian
Type: Configuration
Product: courier-authlib
Operating System: debian buster 10
{ "unfixed": true}
Source: debian
Type: Configuration
Vendor: debian
Product: courier-authlib
Operating System: * * *
{ "cpe_match": [ { "cpe23uri": "cpe:2.3:a:debian:courier-authlib:*:*:*:*:*:*:*:*", "versionEndExcluding": "0.71.1-2", "vulnerable": true } ], "operator": "OR"}
Source: nvd
Type: Configuration
Vendor: debian
Product: debian_linux
Operating System: * * *
{ "cpe_match": [ { "cpe23uri": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "vulnerable": true } ], "operator": "OR"}
Source: nvd