Russian Vulnerability Scanner Database

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BDU:2021-02594

Scores

EPSS

0.000none0.0%
0%20%40%60%80%100%

Percentile: 0.0%

CVSS

7.8high3.x
0246810

CVSS Score: 7.8/10

All CVSS Scores

CVSS 3.x
7.8

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS 2.0
6.8

Vector: AV:L/AC:L/Au:S/C:C/I:C/A:C

Description

Уязвимость компонента drivers/block/xen-blkback/blkback.c ядра операционных систем Linux связана с ошибками отображением грантов blkback. Эксплуатация уязвимости может позволить нарушителю оказать воздействие на конфиденциальность, целостность и доступность защищаемой информации

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Sources

bdu

Related Vulnerabilities

CVE-2021-26930

Reference Links

https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-26930
http://xenbits.xen.org/xsa/advisory-365.html
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26930
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=871997bc9e423f05c7da7c9178e62dde5df2a7f8
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.222
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.177
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.258
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.258
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.18
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.1
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.100
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2XQR52ICKRK3GC4HDWLMWF2U55YGAR63/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GWQWPWYZRXVFJI5M3VCM72X27IB7CKOB/
https://lists.fedoraproject.org/archives/list/package-announce
lists.fedoraproject.org/message/2XQR52ICKRK3GC4HDWLMWF2U55YGAR63/
https://lists.fedoraproject.org/archives/list/package-announce
lists.fedoraproject.org/message/GWQWPWYZRXVFJI5M3VCM72X27IB7CKOB/
https://lore.kernel.org/lkml/20210216124015.28923-1-jgross
suse.com/
https://security.netapp.com/advisory/ntap-20210326-0001/
https://security-tracker.debian.org/tracker/CVE-2021-26930
https://ubuntu.com/security/notices/USN-4904-1
https://ubuntu.com/security/notices/USN-4909-1
https://ubuntu.com/security/notices/USN-4946-1
https://ubuntu.com/security/notices/USN-4949-1
https://usn.ubuntu.com/usn/usn-4904-1
https://usn.ubuntu.com/usn/usn-4909-1
https://usn.ubuntu.com/usn/usn-4946-1
https://usn.ubuntu.com/usn/usn-4949-1
https://wiki.astralinux.ru/astra-linux-se16-bulletin-20211008SE16
https://www.cve.org/CVERecord?id=CVE-2021-26930
https://www.openwall.com/lists/oss-security/2021/02/16/6
https://xenbits.xen.org/xsa/advisory-365.html
https://поддержка.нппкт.рф/bin/view/ОСнова/Обновления/2.4/

Recommendations

Source: bdu

Использование рекомендаций:
Для Linux:
http://xenbits.xen.org/xsa/advisory-365.html
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=871997bc9e423f05c7da7c9178e62dde5df2a7f8
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.222
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.177
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.258
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.258
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.18
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.1
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.100

Для Fedora:
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2XQR52ICKRK3GC4HDWLMWF2U55YGAR63/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GWQWPWYZRXVFJI5M3VCM72X27IB7CKOB/

Для Debian GNU/Linux:
https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
https://security-tracker.debian.org/tracker/CVE-2021-26930

Для ОС Astra Linux:
использование рекомендаций производителя: https://wiki.astralinux.ru/astra-linux-se16-bulletin-20211008SE16

Для ОСОН Основа:
Обновление программного обеспечения linux до версии 5.14.9-2.osnova179.1

URL: https://bdu.fstec.ru/vul/2021-02594

Vulnerable Software (56)

Type: Configuration

Vendor: сообщество свободного программного обеспечения

Product: linux_kernel

Operating System: fedora 32

Trait: 
{  "version_end_including": "4.14.221",  "version_start_including": "4.10"}

Source: bdu

Type: Configuration

Vendor: сообщество свободного программного обеспечения

Product: linux_kernel

Operating System: astra 1.6

Trait: 
{  "version_end_including": "4.19.176",  "version_start_including": "4.15"}

Source: bdu

Type: Configuration

Vendor: сообщество свободного программного обеспечения

Product: linux_kernel

Operating System: fedora 32

Trait: 
{  "version_end_including": "5.4.99",  "version_start_including": "4.20"}

Source: bdu

Type: Configuration

Vendor: сообщество свободного программного обеспечения

Product: linux_kernel

Operating System: fedora 32

Trait: 
{  "version_end_including": "5.10.17",  "version_start_including": "5.5"}

Source: bdu

Type: Configuration

Vendor: сообщество свободного программного обеспечения

Product: linux_kernel

Operating System: fedora 32

Trait: 
{  "version_exact": "5.11.0"}

Source: bdu

Type: Configuration

Vendor: сообщество свободного программного обеспечения

Product: linux_kernel

Operating System: fedora 32

Trait: 
{  "version_end_including": "4.4.257",  "version_start_including": "4.0"}

Source: bdu

Type: Configuration

Vendor: сообщество свободного программного обеспечения

Product: linux_kernel

Operating System: fedora 32

Trait: 
{  "version_end_including": "4.9.257",  "version_start_including": "4.5"}

Source: bdu

Type: Configuration

Vendor: сообщество свободного программного обеспечения

Product: linux_kernel

Operating System: fedora 33

Trait: 
{  "version_end_including": "4.14.221",  "version_start_including": "4.10"}

Source: bdu

Type: Configuration

Vendor: сообщество свободного программного обеспечения

Product: linux_kernel

Operating System: fedora 33

Trait: 
{  "version_end_including": "4.19.176",  "version_start_including": "4.15"}

Source: bdu

Type: Configuration

Vendor: сообщество свободного программного обеспечения

Product: linux_kernel

Operating System: fedora 33

Trait: 
{  "version_end_including": "5.4.99",  "version_start_including": "4.20"}

Source: bdu