BDU:2022-07484
Scores
EPSS
Percentile: 0.0%
CVSS
CVSS Score: 8.2/10
All CVSS Scores
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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
Low (L)
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:P/I:N/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
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
Complete
Measures the impact to the availability of the impacted component
Description
Уязвимость функции kbdint_next_device() службы sshd средства криптографической защиты OpenSSH связана с недостатками разграничения доступа при обработке параметра oKbdInteractiveDevices, содержащего список методов для проверки подлинности с использованием интерактивной клавиатуры. Эксплуатация уязвимости может позволить нарушителю, действующему удалённо, реализовать атаку методом «грубой силы» (brute force) или вызвать отказ в обслуживании
Scaner-VS 7 — a modern vulnerability management solution
Sources
Related Vulnerabilities
Reference Links
Recommendations
Source: bdu
Использование рекомендаций:
Для OpenSSH обновить до версии 7.0 и выше:
https://www.openssh.com/releasenotes.html
Для программных продуктов Red Hat Inc.:
https://access.redhat.com/security/cve/cve-2015-5600
Для Fedora:
https://lists.fedoraproject.org/pipermail/package-announce/2015-August/165170.html
https://lists.fedoraproject.org/pipermail/package-announce/2015-July/162955.html
Для Junos OS:
https://supportportal.juniper.net/s/article/2015-10-Security-Bulletin-Junos-OpenSSH-brute-force-keyboard-interactive-MaxAuthTries-bypass-CVE-2015-5600?language=en_US
Для программных продуктов Apple Inc.:
https://support.apple.com/ru-ru/HT205031
Для Debian:
https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html
Для Ubuntu:
https://ubuntu.com/security/notices/USN-2710-1
https://ubuntu.com/security/notices/USN-2710-2
Для программных продуктов Oracle:
https://www.oracle.com/security-alerts/cpujul2016.html
https://www.oracle.com/security-alerts/cpujul2018.html
https://www.oracle.com/security-alerts/bulletinoct2015.html
https://www.oracle.com/security-alerts/linuxbulletinapr2016.html
https://www.oracle.com/security-alerts/linuxbulletinoct2015.html
https://www.oracle.com/security-alerts/ovmbulletinjul2016.html
Для Arista EOS:
https://www.arista.com/en/support/advisories-notices/security-advisory/1174-security-advisory-12
Для OpenBSD:
http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/auth2-chall.c.diff?r1=1.42&r2=1.43&f=h
http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/auth2-chall.c
Для продуктов Siemens:
https://cert-portal.siemens.com/productcert/html/ssa-412672.html
Организационные меры:
1) администраторам следует использовать пары ключей шифрования длиной не менее 2048 бит и сложные пароли для защиты закрытых ключей;
2) рекомендуется сократить время соединения с 30 до 20 секунд;
3) рекомендуется использовать ПО для ограничения количества попыток ввода неверного пароля.
Компания Siemens определила следующие конкретные обходные пути и меры по снижению риска, которые клиенты могут применить:
1) рекомендуется ограничить доступ к уязвимым системам, особенно к портам 22/tcp и 443/tcp;
2) следует деактивировать веб-сервер, если он не требуется (если деактивация поддерживается продуктом).
Vulnerable Software (220)
Type: Configuration
Vendor: openbsd project
Product: openssh
Operating System: red hat enterprise linux 6
{ "version_end_excluding": "7.0"}
Source: bdu
Type: Configuration
Vendor: openbsd project
Product: openssh
Operating System: ubuntu 12.04
{ "version_end_excluding": "7.0"}
Source: bdu
Type: Configuration
Vendor: openbsd project
Product: openssh
Operating System: solaris 10
{ "version_end_excluding": "7.0"}
Source: bdu
Type: Configuration
Vendor: openbsd project
Product: openssh
Operating System: solaris 11.3
{ "version_end_excluding": "7.0"}
Source: bdu
Type: Configuration
Vendor: openbsd project
Product: openssh
Operating System: oracle linux 5
{ "version_end_excluding": "7.0"}
Source: bdu
Type: Configuration
Vendor: openbsd project
Product: openssh
Operating System: solaris 11.2
{ "version_end_excluding": "7.0"}
Source: bdu
Type: Configuration
Vendor: openbsd project
Product: openssh
Operating System: arista eos *
{ "version_end_excluding": "7.0"}
Source: bdu
Type: Configuration
Vendor: openbsd project
Product: openssh
Operating System: openbsd 5.9
{ "version_end_excluding": "7.0"}
Source: bdu
Type: Configuration
Vendor: openbsd project
Product: openssh
Operating System: oracle linux 7
{ "version_end_excluding": "7.0"}
Source: bdu
Type: Configuration
Vendor: openbsd project
Product: openssh
Operating System: debian gnu/linux 8
{ "version_end_excluding": "7.0"}
Source: bdu
Type: Configuration
Vendor: openbsd project
Product: openssh
Operating System: junos *
{ "version_end_excluding": "7.0"}
Source: bdu
Type: Configuration
Vendor: openbsd project
Product: openssh
Operating System: openbsd 5.8
{ "version_end_excluding": "7.0"}
Source: bdu
Type: Configuration
Vendor: openbsd project
Product: openssh
Operating System: red hat enterprise linux 7
{ "version_end_excluding": "7.0"}
Source: bdu
Type: Configuration
Vendor: openbsd project
Product: openssh
Operating System: fedora 21
{ "version_end_excluding": "7.0"}
Source: bdu
Type: Configuration
Vendor: openbsd project
Product: openssh
Operating System: ubuntu 15.04
{ "version_end_excluding": "7.0"}
Source: bdu
Type: Configuration
Vendor: openbsd project
Product: openssh
Operating System: ubuntu 14.04 ESM
{ "version_end_excluding": "7.0"}
Source: bdu
Type: Configuration
Vendor: openbsd project
Product: openssh
Operating System: macos *
{ "version_end_excluding": "7.0"}
Source: bdu
Type: Configuration
Vendor: openbsd project
Product: openssh
Operating System: fedora 22
{ "version_end_excluding": "7.0"}
Source: bdu
Type: Configuration
Vendor: openbsd project
Product: openssh
Operating System: oracle linux 6
{ "version_end_excluding": "7.0"}
Source: bdu
Type: Configuration
Vendor: openbsd project
Product: openssh
Operating System: openbsd 5.7
{ "version_end_excluding": "7.0"}
Source: bdu