BDU:2021-04260
Scores
EPSS
Percentile: 0.0%
CVSS
CVSS Score: 7.8/10
All CVSS Scores
Vector: CVSS:3.1/AV:L/AC:L/PR:L/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
Local (L)
Describes how the vulnerability is exploited
Attack Complexity
Low (L)
Describes the conditions beyond the attacker's control
Privileges Required
Low (L)
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:L/AC:L/Au:S/C:C/I:C/A:C
Vector Breakdown
CVSS (Common Vulnerability Scoring System) vector provides detailed metrics about vulnerability characteristics
CVSS
Attack Vector
Local (L)
Describes how the vulnerability is exploited
Attack Complexity
Low (L)
Describes the conditions beyond the attacker's control
Authentication
Single
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 функции xt_compat_target_from_user() (net/netfilter/x_tables.c) подсистемы netfilter операционных систем Linux связана с записью за границами буфера в памяти. Эксплуатация уязвимости может позволить нарушителю вызвать отказ в обслуживании или повысить свои привилегии с помощью вызова compat_setsockopt() с установленными значениями IPT_SO_SET_REPLACE или IP6T_SO_SET_REPLACE
Scaner-VS 7 — a modern vulnerability management solution
Sources
Related Vulnerabilities
Exploits
Reference Links
Recommendations
Source: bdu
Использование рекомендаций:
Для Linux:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/x_tables.c?id=9fa492cdc160cd27ce1046cb36f47d3b2b1efa21
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/x_tables.c?id=b29c457a6511435960115c0f548c4360d5f4801d
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.231
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.188
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.267
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.267
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.31
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.15
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.113
Для программных продуктов Red Hat Inc.:
https://access.redhat.com/security/cve/CVE-2021-22555
Для Debian:
Использование рекомендаций производителя: https://security-tracker.debian.org/tracker/CVE-2021-22555
Для ОС Astra Linux:
использование рекомендаций производителя: https://wiki.astralinux.ru/astra-linux-se16-bulletin-20211008SE16
Для ОС Аврора 3.2.1:
https://cve.omprussia.ru/bb10321
Для ОС Аврора 3.2.2:
https://cve.omprussia.ru/bb11322
Для ОС Аврора 3.2.3:
https://cve.omprussia.ru/bb12323
Для РедОС: http://repo.red-soft.ru/redos/7.3c/x86_64/updates/
Vulnerable Software (70)
Type: Configuration
Vendor: сообщество свободного программного обеспечения
Product: linux_kernel
Operating System: debian gnu/linux 10
{ "version_end_including": "4.14.230", "version_start_including": "4.10"}
Source: bdu
Type: Configuration
Vendor: сообщество свободного программного обеспечения
Product: linux_kernel
Operating System: debian gnu/linux 10
{ "version_end_including": "4.19.187", "version_start_including": "4.15"}
Source: bdu
Type: Configuration
Vendor: сообщество свободного программного обеспечения
Product: linux_kernel
Operating System: debian gnu/linux 10
{ "version_end_including": "5.4.112", "version_start_including": "4.20"}
Source: bdu
Type: Configuration
Vendor: сообщество свободного программного обеспечения
Product: linux_kernel
Operating System: debian gnu/linux 10
{ "version_end_including": "5.10.30", "version_start_including": "5.5"}
Source: bdu
Type: Configuration
Vendor: сообщество свободного программного обеспечения
Product: linux_kernel
Operating System: debian gnu/linux 10
{ "version_end_including": "5.11.14", "version_start_including": "5.11.0"}
Source: bdu
Type: Configuration
Vendor: сообщество свободного программного обеспечения
Product: linux_kernel
Operating System: debian gnu/linux 10
{ "version_end_including": "4.4.266", "version_start_including": "4.0"}
Source: bdu
Type: Configuration
Vendor: сообщество свободного программного обеспечения
Product: linux_kernel
Operating System: debian gnu/linux 10
{ "version_end_including": "4.9.266", "version_start_including": "4.5"}
Source: bdu
Type: Configuration
Vendor: сообщество свободного программного обеспечения
Product: linux_kernel
Operating System: linux *
{ "version_end_including": "4.14.230", "version_start_including": "4.10"}
Source: bdu
Type: Configuration
Vendor: сообщество свободного программного обеспечения
Product: linux_kernel
Operating System: linux *
{ "version_end_including": "4.19.187", "version_start_including": "4.15"}
Source: bdu
Type: Configuration
Vendor: сообщество свободного программного обеспечения
Product: linux_kernel
Operating System: linux *
{ "version_end_including": "5.4.112", "version_start_including": "4.20"}
Source: bdu
Type: Configuration
Vendor: сообщество свободного программного обеспечения
Product: linux_kernel
Operating System: linux *
{ "version_end_including": "5.10.30", "version_start_including": "5.5"}
Source: bdu
Type: Configuration
Vendor: сообщество свободного программного обеспечения
Product: linux_kernel
Operating System: linux *
{ "version_end_including": "5.11.14", "version_start_including": "5.11.0"}
Source: bdu
Type: Configuration
Vendor: сообщество свободного программного обеспечения
Product: linux_kernel
Operating System: linux *
{ "version_end_including": "4.4.266", "version_start_including": "4.0"}
Source: bdu
Type: Configuration
Vendor: сообщество свободного программного обеспечения
Product: linux_kernel
Operating System: linux *
{ "version_end_including": "4.9.266", "version_start_including": "4.5"}
Source: bdu
Type: Configuration
Vendor: сообщество свободного программного обеспечения
Product: linux_kernel
Operating System: redos 7.3
{ "version_end_including": "4.14.230", "version_start_including": "4.10"}
Source: bdu
Type: Configuration
Vendor: сообщество свободного программного обеспечения
Product: linux_kernel
Operating System: redos 7.3
{ "version_end_including": "4.19.187", "version_start_including": "4.15"}
Source: bdu
Type: Configuration
Vendor: сообщество свободного программного обеспечения
Product: linux_kernel
Operating System: redos 7.3
{ "version_end_including": "5.4.112", "version_start_including": "4.20"}
Source: bdu
Type: Configuration
Vendor: сообщество свободного программного обеспечения
Product: linux_kernel
Operating System: redos 7.3
{ "version_end_including": "5.10.30", "version_start_including": "5.5"}
Source: bdu
Type: Configuration
Vendor: сообщество свободного программного обеспечения
Product: linux_kernel
Operating System: redos 7.3
{ "version_end_including": "5.11.14", "version_start_including": "5.11.0"}
Source: bdu
Type: Configuration
Vendor: сообщество свободного программного обеспечения
Product: linux_kernel
Operating System: redos 7.3
{ "version_end_including": "4.4.266", "version_start_including": "4.0"}
Source: bdu