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OVAL Definitions
>
OVAL Definition Details
Id
oval:com.altx-soft.nix:def:157961
[Rus]
Version
2
Class
patch
ALTXid
363953
Language
English
Severity
High
Title
DLA-2714-1 -- linux-4.19 security update
Description
Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.
Family
unix
Platform
Debian 9
Product
linux-4.19
Reference
VENDOR: DLA-2714-1
VENDOR: DLA-2714-1
Id:
DLA-2714-1
Reference:
https://lists.debian.org/debian-lts-announce/2021/debian-lts-announce-202107/msg00015.html
CVE: CVE-2020-36311
CVE: CVE-2020-36311
Id:
CVE-2020-36311
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-36311
Comment
: An issue was discovered in the Linux kernel before 5.9. arch/x86/kvm/svm/sev.c allows attackers to cause a denial of service (soft lockup) by triggering destruction of a large SEV VM (which requires unregistering many encrypted regions), aka CID-7be74942f184.
CVSSv2 Score:
2.1
Access vector:
LOCAL
Access complexity:
LOW
Authentication:
NONE
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
PARTIAL
CVSSv2 Vector:
AV:L/AC:L/Au:N/C:N/I:N/A:P
CVSSv3 Score:
5.5
Attack vector:
LOCAL
Attack complexity:
LOW
Privileges required:
LOW
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References:
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9 (MISC)
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7be74942f184fdfba34ddd19a0d995deb34d4a03 (MISC)
[debian-lts-announce] 20210720 [SECURITY] [DLA 2714-1] linux-4.19 security update (MLIST)
DSA-4941 (DEBIAN)
CVE: CVE-2021-3609
CVE: CVE-2021-3609
Id:
CVE-2021-3609
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3609
Comment
: .A flaw was found in the CAN BCM networking protocol in the Linux kernel, where a local attacker can abuse a flaw in the CAN subsystem to corrupt memory, crash the system or escalate privileges. This race condition in net/can/bcm.c in the Linux kernel allows for local privilege escalation to root.
CVSSv2 Score:
6.9
Access vector:
LOCAL
Access complexity:
MEDIUM
Authentication:
NONE
Confidentiality impact:
COMPLETE
Integrity impact:
COMPLETE
Availability impact:
COMPLETE
CVSSv2 Vector:
AV:L/AC:M/Au:N/C:C/I:C/A:C
CVSSv3 Score:
7
Attack vector:
LOCAL
Attack complexity:
HIGH
Privileges required:
LOW
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
HIGH
Integrity impact:
HIGH
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE:
362 (Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition'))
References:
https://bugzilla.redhat.com/show_bug.cgi?id=1971651 (MISC)
https://github.com/torvalds/linux/commit/d5f9023fa61ee8b94f37a93f08e94b136cf1e463 (MISC)
https://github.com/nrb547/kernel-exploitation/blob/main/cve-2021-3609/cve-2021-3609.md (MISC)
https://www.openwall.com/lists/oss-security/2021/06/19/1 (MISC)
https://security.netapp.com/advisory/ntap-20220419-0004/ (CONFIRM)
CVE: CVE-2021-33909
CVE: CVE-2021-33909
Id:
CVE-2021-33909
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33909
Comment
: fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an unprivileged user, aka CID-8cae8cd89f05.
CVSSv2 Score:
7.2
Access vector:
LOCAL
Access complexity:
LOW
Authentication:
NONE
Confidentiality impact:
COMPLETE
Integrity impact:
COMPLETE
Availability impact:
COMPLETE
CVSSv2 Vector:
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSSv3 Score:
7.8
Attack vector:
LOCAL
Attack complexity:
LOW
Privileges required:
LOW
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
HIGH
Integrity impact:
HIGH
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE:
787 (Out-of-bounds Write)
References:
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4 (CONFIRM)
https://github.com/torvalds/linux/commit/8cae8cd89f05f6de223d63e6d15e31c8ba9cf53b (CONFIRM)
https://www.openwall.com/lists/oss-security/2021/07/20/1 (MISC)
[debian-lts-announce] 20210720 [SECURITY] [DLA 2713-2] linux security update (MLIST)
[debian-lts-announce] 20210720 [SECURITY] [DLA 2714-1] linux-4.19 security update (MLIST)
[debian-lts-announce] 20210720 [SECURITY] [DLA 2713-1] linux security update (MLIST)
DSA-4941 (DEBIAN)
http://packetstormsecurity.com/files/163621/Sequoia-A-Deep-Root-In-Linuxs-Filesystem-Layer.html (MISC)
[oss-security] 20210722 Re: CVE-2021-33909: size_t-to-int vulnerability in Linux's filesystem layer (MLIST)
http://packetstormsecurity.com/files/163671/Kernel-Live-Patch-Security-Notice-LSN-0079-1.html (MISC)
https://security.netapp.com/advisory/ntap-20210819-0004/ (CONFIRM)
[oss-security] 20210825 Re: CVE-2021-33909: size_t-to-int vulnerability in Linux's filesystem layer (MLIST)
http://packetstormsecurity.com/files/164155/Kernel-Live-Patch-Security-Notice-LSN-0081-1.html (MISC)
[oss-security] 20210916 Containers-optimized OS (COS) membership in the linux-distros list (MLIST)
[oss-security] 20210917 Re: Containers-optimized OS (COS) membership in the linux-distros list (MLIST)
[oss-security] 20210920 Re: Containers-optimized OS (COS) membership in the linux-distros list (MLIST)
http://packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-LSN-0083-1.html (MISC)
https://www.oracle.com/security-alerts/cpujan2022.html (MISC)
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0015 (CONFIRM)
FEDORA-2021-07dc0b3eb1 ()
CVE: CVE-2021-34693
CVE: CVE-2021-34693
Id:
CVE-2021-34693
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34693
Comment
: net/can/bcm.c in the Linux kernel through 5.12.10 allows local users to obtain sensitive information from kernel stack memory because parts of a data structure are uninitialized.
CVSSv2 Score:
2.1
Access vector:
LOCAL
Access complexity:
LOW
Authentication:
NONE
Confidentiality impact:
PARTIAL
Integrity impact:
NONE
Availability impact:
NONE
CVSSv2 Vector:
AV:L/AC:L/Au:N/C:P/I:N/A:N
CVSSv3 Score:
5.5
Attack vector:
LOCAL
Attack complexity:
LOW
Privileges required:
LOW
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
HIGH
Integrity impact:
NONE
Availability impact:
NONE
CVSSv3 Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE:
909 ()
References:
[oss-security] 20210615 CVE-2021-34693: Infoleak in CAN BCM protocol in Linux kernel (MLIST)
[debian-lts-announce] 20210720 [SECURITY] [DLA 2713-2] linux security update (MLIST)
[debian-lts-announce] 20210720 [SECURITY] [DLA 2714-1] linux-4.19 security update (MLIST)
[debian-lts-announce] 20210720 [SECURITY] [DLA 2713-1] linux security update (MLIST)
DSA-4941 (DEBIAN)
https://lore.kernel.org/netdev/trinity-87eaea25-2a7d-4aa9-92a5-269b822e5d95-1623609211076%403c-app-gmx-bs04/T/ ()
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5e87ddbe3942e27e939bdc02deb8579b0cbd8ecc ()
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