BDU:2021-01123
Scores
EPSS
Percentile: 0.0%
CVSS
CVSS Score: 9.8/10
All CVSS Scores
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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
High (H)
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
High (H)
Measures the impact to the availability of the impacted component
Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C
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
Complete
Measures the impact to the confidentiality of information
Integrity Impact
Complete
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
Complete
Measures the impact to the availability of the impacted component
Description
Уязвимость почтового сервера Microsoft Exchange Server связана с недостаточной проверкой поступающих запросов. Эксплуатация уязвимости может позволить нарушителю, действующему удалённо, осуществить SSRF-атаку с помощью специально сформированных HTTPS-запросов (содержащих вредоносные файлы cookie X-AnonResource-Backend и искаженные файлы cookie X-BEResource)
Scaner-VS 7 — a modern vulnerability management solution
Sources
Related Vulnerabilities
Reference Links
Recommendations
Source: bdu
Использование рекомендаций:
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26855
Vulnerable Software (24)
Type: Configuration
Vendor: microsoft corp.
Product: microsoft exchange server
Operating System: * *
{
"version_exact": "2019 Cumulative Update 2"
}Source: bdu
Type: Configuration
Vendor: microsoft corp.
Product: microsoft exchange server
Operating System: * *
{
"version_exact": "2016 Cumulative Update 13"
}Source: bdu
Type: Configuration
Vendor: microsoft corp.
Product: microsoft exchange server
Operating System: * *
{
"version_exact": "2016 Cumulative Update 9"
}Source: bdu
Type: Configuration
Vendor: microsoft corp.
Product: microsoft exchange server
Operating System: * *
{
"version_exact": "2019 Cumulative Update 8"
}Source: bdu
Type: Configuration
Vendor: microsoft corp.
Product: microsoft exchange server
Operating System: * *
{
"version_exact": "2016 Cumulative Update 14"
}Source: bdu
Type: Configuration
Vendor: microsoft corp.
Product: microsoft exchange server
Operating System: * *
{
"version_exact": "2013 Cumulative Update 23"
}Source: bdu
Type: Configuration
Vendor: microsoft corp.
Product: microsoft exchange server
Operating System: * *
{
"version_exact": "2016 Cumulative Update 19"
}Source: bdu
Type: Configuration
Vendor: microsoft corp.
Product: microsoft exchange server
Operating System: * *
{
"version_exact": "2019 Cumulative Update 1"
}Source: bdu
Type: Configuration
Vendor: microsoft corp.
Product: microsoft exchange server
Operating System: * *
{
"version_exact": "2013 Cumulative Update 21"
}Source: bdu
Type: Configuration
Vendor: microsoft corp.
Product: microsoft exchange server
Operating System: * *
{
"version_exact": "2016 Cumulative Update 15"
}Source: bdu
Type: Configuration
Vendor: microsoft corp.
Product: microsoft exchange server
Operating System: * *
{
"version_exact": "2019 Cumulative Update 7"
}Source: bdu
Type: Configuration
Vendor: microsoft corp.
Product: microsoft exchange server
Operating System: * *
{
"version_exact": "2016 Cumulative Update 18"
}Source: bdu
Type: Configuration
Vendor: microsoft corp.
Product: microsoft exchange server
Operating System: * *
{
"version_exact": "2019 Cumulative Update 3"
}Source: bdu
Type: Configuration
Vendor: microsoft corp.
Product: microsoft exchange server
Operating System: * *
{
"version_exact": "2016 Cumulative Update 12"
}Source: bdu
Type: Configuration
Vendor: microsoft corp.
Product: microsoft exchange server
Operating System: * *
{
"version_exact": "2013 Cumulative Update 22"
}Source: bdu
Type: Configuration
Vendor: microsoft corp.
Product: microsoft exchange server
Operating System: * *
{
"version_exact": "2016 Cumulative Update 10"
}Source: bdu
Type: Configuration
Vendor: microsoft corp.
Product: microsoft exchange server
Operating System: * *
{
"version_exact": "2016 Cumulative Update 16"
}Source: bdu
Type: Configuration
Vendor: microsoft corp.
Product: microsoft exchange server
Operating System: * *
{
"version_exact": "2019"
}Source: bdu
Type: Configuration
Vendor: microsoft corp.
Product: microsoft exchange server
Operating System: * *
{
"version_exact": "2016 Cumulative Update 11"
}Source: bdu
Type: Configuration
Vendor: microsoft corp.
Product: microsoft exchange server
Operating System: * *
{
"version_exact": "2016 Cumulative Update 8"
}Source: bdu
Type: Configuration
Vendor: microsoft corp.
Product: microsoft exchange server
Operating System: * *
{
"version_exact": "2019 Cumulative Update 4"
}Source: bdu
Type: Configuration
Vendor: microsoft corp.
Product: microsoft exchange server
Operating System: * *
{
"version_exact": "2019 Cumulative Update 6"
}Source: bdu
Type: Configuration
Vendor: microsoft corp.
Product: microsoft exchange server
Operating System: * *
{
"version_exact": "2019 Cumulative Update 5"
}Source: bdu
Type: Configuration
Vendor: microsoft corp.
Product: microsoft exchange server
Operating System: * *
{
"version_exact": "2016 Cumulative Update 17"
}Source: bdu