BDU:2020-02873
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:N/I:N/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
None (N)
Measures the impact to the confidentiality of information
Integrity Impact
None (N)
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:N/I:N/A:P
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
None (N)
Measures the impact to the confidentiality of information
Integrity Impact
None (N)
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
Partial
Measures the impact to the availability of the impacted component
Description
Уязвимость функции SSL_check_chain реализации протокола TLS библиотеки OpenSSL связана с возможностью разыменования нулевого указателя в результате неправильной обработки TLS расширения «signature_algorithms_cert». Эксплуатация уязвимости может позволить нарушителю, действующему удаленно, вызвать отказ в обслуживании, используя специально сформированный OpenSSL клиент
Scaner-VS 7 — a modern vulnerability management solution
Sources
Related Vulnerabilities
Exploits
Reference Links
Recommendations
Source: bdu
Использование рекомендаций:
Для OpenSSL:
https://www.openssl.org/news/secadv/20200421.txt
Для программных продуктов Novell Inc.:
https://lists.opensuse.org/opensuse-security-announce/2020-07/msg00004.html
https://lists.opensuse.org/opensuse-security-announce/2020-07/msg00011.html
Для Fedora:
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XVEP3LAK4JSPRXFO4QF4GG2IVXADV3SO/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EXDDAOWSAIEFQNBHWYE6PPYFV4QXGMCD/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DDHOAATPWJCXRNFMJ2SASDBBNU5RJONY/
Для программных продуктов Oracle Corp.:
https://www.oracle.com/security-alerts/cpujul2020.html
https://www.oracle.com/security-alerts/cpujan2021.html
Для Debian:
https://security-tracker.debian.org/tracker/CVE-2020-1967
Для Astra Linux:
https://wiki.astralinux.ru/astra-linux-se16-bulletin-20210730SE16
https://wiki.astralinux.ru/pages/viewpage.action?pageId=47416144
https://wiki.astralinux.ru/astra-linux-se81-bulletin-20211019SE81
Для ОС ОН «Стрелец»:
Обновление программного обеспечения openssl до версии 1.1.1d-0+deb10u7strelets1
Для ОС Альт 8 СП: установка обновления из публичного репозитория программного средства
Vulnerable Software (156)
Type: Configuration
Vendor: openssl software foundation
Product: openssl
Operating System: opensuse leap 15.1
{ "version_exact": "1.1.1d"}
Source: bdu
Type: Configuration
Vendor: openssl software foundation
Product: openssl
Operating System: opensuse leap 15.1
{ "version_exact": "1.1.1e"}
Source: bdu
Type: Configuration
Vendor: openssl software foundation
Product: openssl
Operating System: opensuse leap 15.1
{ "version_exact": "1.1.1f"}
Source: bdu
Type: Configuration
Vendor: openssl software foundation
Product: openssl
Operating System: opensuse leap 15.1
{ "version_end_including": "1.1.1f", "version_start_including": "1.1.1d"}
Source: bdu
Type: Configuration
Vendor: openssl software foundation
Product: openssl
Operating System: fedora 30
{ "version_exact": "1.1.1d"}
Source: bdu
Type: Configuration
Vendor: openssl software foundation
Product: openssl
Operating System: fedora 30
{ "version_exact": "1.1.1e"}
Source: bdu
Type: Configuration
Vendor: openssl software foundation
Product: openssl
Operating System: fedora 30
{ "version_exact": "1.1.1f"}
Source: bdu
Type: Configuration
Vendor: openssl software foundation
Product: openssl
Operating System: fedora 30
{ "version_end_including": "1.1.1f", "version_start_including": "1.1.1d"}
Source: bdu
Type: Configuration
Vendor: openssl software foundation
Product: openssl
Operating System: debian gnu/linux 8
{ "version_exact": "1.1.1d"}
Source: bdu
Type: Configuration
Vendor: openssl software foundation
Product: openssl
Operating System: debian gnu/linux 8
{ "version_exact": "1.1.1e"}
Source: bdu
Type: Configuration
Vendor: openssl software foundation
Product: openssl
Operating System: debian gnu/linux 8
{ "version_exact": "1.1.1f"}
Source: bdu
Type: Configuration
Vendor: openssl software foundation
Product: openssl
Operating System: debian gnu/linux 8
{ "version_end_including": "1.1.1f", "version_start_including": "1.1.1d"}
Source: bdu
Type: Configuration
Vendor: openssl software foundation
Product: openssl
Operating System: fedora 31
{ "version_exact": "1.1.1d"}
Source: bdu
Type: Configuration
Vendor: openssl software foundation
Product: openssl
Operating System: fedora 31
{ "version_exact": "1.1.1e"}
Source: bdu
Type: Configuration
Vendor: openssl software foundation
Product: openssl
Operating System: fedora 31
{ "version_exact": "1.1.1f"}
Source: bdu
Type: Configuration
Vendor: openssl software foundation
Product: openssl
Operating System: fedora 31
{ "version_end_including": "1.1.1f", "version_start_including": "1.1.1d"}
Source: bdu
Type: Configuration
Vendor: openssl software foundation
Product: openssl
Operating System: fedora 32
{ "version_exact": "1.1.1d"}
Source: bdu
Type: Configuration
Vendor: openssl software foundation
Product: openssl
Operating System: fedora 32
{ "version_exact": "1.1.1e"}
Source: bdu
Type: Configuration
Vendor: openssl software foundation
Product: openssl
Operating System: fedora 32
{ "version_exact": "1.1.1f"}
Source: bdu
Type: Configuration
Vendor: openssl software foundation
Product: openssl
Operating System: fedora 32
{ "version_end_including": "1.1.1f", "version_start_including": "1.1.1d"}
Source: bdu