BDU:2021-02766
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 компонента tls-openssl.c агента пересылки сообщений Exim, связанная с использованием памяти после ее освобождения, позволяющая нарушителю повысить привилегии в системе и выполнить произвольный код путем отправки специально сформированного запроса
Scaner-VS 7 — a modern vulnerability management solution
Sources
Related Vulnerabilities
Reference Links
Recommendations
Source: bdu
Использование рекомендаций:
Для Exim:
https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28018-OCORK.txt
Для РЕД ОС:
http://repo.red-soft.ru/redos/7.2c/x86_64/updates/
Для Debian GNU/Linux:
https://security-tracker.debian.org/tracker/CVE-2020-28018
Для Ubuntu:
https://ubuntu.com/security/CVE-2020-28018
Для Astra Linux:
использование рекомендаций производителя: https://wiki.astralinux.ru/astra-linux-se47-bulletin-2022-0114SE47
Для ОСОН Основа:
Обновление программного обеспечения exim4 до версии 4.92-8+deb10u6
Для ОС Astra Linux Special Edition 1.7:
обновить пакет exim4 до 4.92-8+deb10u6.astra.se19 или более высокой версии, используя рекомендации производителя: https://wiki.astralinux.ru/astra-linux-se17-bulletin-2021-1126SE17
Vulnerable Software (10)
Type: Configuration
Vendor: gnu general public license
Product: exim
Operating System: astra 4.7
{ "version_end_excluding": "4.94.1", "version_start_including": "4.0"}
Source: bdu
Type: Configuration
Vendor: gnu general public license
Product: exim
Operating System: ubuntu 18.04 LTS
{ "version_end_excluding": "4.94.1", "version_start_including": "4.0"}
Source: bdu
Type: Configuration
Vendor: gnu general public license
Product: exim
Operating System: debian gnu/linux 10
{ "version_end_excluding": "4.94.1", "version_start_including": "4.0"}
Source: bdu
Type: Configuration
Vendor: gnu general public license
Product: exim
Operating System: ubuntu 20.10
{ "version_end_excluding": "4.94.1", "version_start_including": "4.0"}
Source: bdu
Type: Configuration
Vendor: gnu general public license
Product: exim
Operating System: осон основа оnyx *
{ "version_end_excluding": "4.94.1", "version_start_including": "4.0"}
Source: bdu
Type: Configuration
Vendor: gnu general public license
Product: exim
Operating System: debian gnu/linux 9
{ "version_end_excluding": "4.94.1", "version_start_including": "4.0"}
Source: bdu
Type: Configuration
Vendor: gnu general public license
Product: exim
Operating System: redos 7.2
{ "version_end_excluding": "4.94.1", "version_start_including": "4.0"}
Source: bdu
Type: Configuration
Vendor: gnu general public license
Product: exim
Operating System: ubuntu 20.04 LTS
{ "version_end_excluding": "4.94.1", "version_start_including": "4.0"}
Source: bdu
Type: Configuration
Vendor: gnu general public license
Product: exim
Operating System: ubuntu 21.04
{ "version_end_excluding": "4.94.1", "version_start_including": "4.0"}
Source: bdu
Type: Configuration
Vendor: gnu general public license
Product: exim
Operating System: astra 1.7
{ "version_end_excluding": "4.94.1", "version_start_including": "4.0"}
Source: bdu