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OVAL Definitions
>
OVAL Definition Details
Id
oval:com.altx-soft.nix:def:176929
[Rus]
Version
1
Class
patch
ALTXid
389614
Language
English
Severity
High
Title
ALASKERNEL-5.4-2022-020 -- security update for kernel
Description
A use-after-free flaw was found in kernel/trace/ring_buffer.c in Linux kernel.
Family
unix
Platform
Amazon Linux 2
Product
kernel
Reference
VENDOR: ALASKERNEL-5.4-2022-020
VENDOR: ALASKERNEL-5.4-2022-020
Id:
ALASKERNEL-5.4-2022-020
Reference:
https://alas.aws.amazon.com/AL2/ALASKERNEL-5.4-2022-020.html
CVE: CVE-2020-27825
CVE: CVE-2020-27825
Id:
CVE-2020-27825
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27825
Comment
: A use-after-free flaw was found in kernel/trace/ring_buffer.c in Linux kernel (before 5.10-rc1). There was a race problem in trace_open and resize of cpu buffer running parallely on different cpus, may cause a denial of service problem (DOS). This flaw could even allow a local attacker with special user privilege to a kernel information leak threat.
CVSSv2 Score:
5.4
Access vector:
LOCAL
Access complexity:
MEDIUM
Authentication:
NONE
Confidentiality impact:
PARTIAL
Integrity impact:
NONE
Availability impact:
COMPLETE
CVSSv2 Vector:
AV:L/AC:M/Au:N/C:P/I:N/A:C
CVSSv3 Score:
5.7
Attack vector:
LOCAL
Attack complexity:
HIGH
Privileges required:
HIGH
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
HIGH
Integrity impact:
NONE
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:H
CWE:
362 (Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition'))
References:
https://bugzilla.redhat.com/show_bug.cgi?id=1905155 (MISC)
DSA-4843 (DEBIAN)
[debian-lts-announce] 20210212 [SECURITY] [DLA 2557-1] linux-4.19 security update (MLIST)
[debian-lts-announce] 20210309 [SECURITY] [DLA 2586-1] linux security update (MLIST)
https://security.netapp.com/advisory/ntap-20210521-0008/ (CONFIRM)
CVE: CVE-2021-3178
CVE: CVE-2021-3178
Id:
CVE-2021-3178
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3178
Comment
: fs/nfsd/nfs3xdr.c in the Linux kernel through 5.10.8, when there is an NFS export of a subdirectory of a filesystem, allows remote attackers to traverse to other parts of the filesystem via READDIRPLUS. NOTE: some parties argue that such a subdirectory export is not intended to prevent this attack; see also the exports(5) no_subtree_check default behavior
CVSSv2 Score:
5.5
Access vector:
NETWORK
Access complexity:
LOW
Authentication:
SINGLE
Confidentiality impact:
PARTIAL
Integrity impact:
PARTIAL
Availability impact:
NONE
CVSSv2 Vector:
AV:N/AC:L/Au:S/C:P/I:P/A:N
CVSSv3 Score:
6.5
Attack vector:
NETWORK
Attack complexity:
LOW
Privileges required:
HIGH
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
HIGH
Integrity impact:
HIGH
Availability impact:
NONE
CVSSv3 Vector:
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
CWE:
22 (Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'))
References:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=51b2ee7d006a736a9126e8111d1f24e4fd0afaa6 (MISC)
[debian-lts-announce] 20210309 [SECURITY] [DLA 2586-1] linux security update (MLIST)
https://patchwork.kernel.org/project/linux-nfs/patch/20210111210129.GA11652%40fieldses.org/ ()
FEDORA-2021-3bcc7198c8 ()
CVE: CVE-2021-3347
CVE: CVE-2021-3347
Id:
CVE-2021-3347
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3347
Comment
: An issue was discovered in the Linux kernel through 5.10.11. PI futexes have a kernel stack use-after-free during fault handling, allowing local users to execute code in the kernel, aka CID-34b1a1ce1458.
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:
416 (Use After Free)
References:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=34b1a1ce1458f50ef27c54e28eb9b1947012907a (MISC)
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f2dac39d93987f7de1e20b3988c8685523247ae2 (MISC)
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=12bb3f7f1b03d5913b3f9d4236a488aa7774dfe9 (MISC)
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c64396cc36c6e60704ab06c1fb1c4a46179c9120 (MISC)
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2156ac1934166d6deb6cd0f6ffc4c1076ec63697 (MISC)
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6ccc84f917d33312eb2846bd7b567639f585ad6d (MISC)
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c5cade200ab9a2a3be9e7f32a752c8d86b502ec7 (MISC)
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04b79c55201f02ffd675e1231d731365e335c307 (MISC)
https://www.openwall.com/lists/oss-security/2021/01/29/3 (MISC)
https://www.openwall.com/lists/oss-security/2021/01/29/1 (MISC)
[oss-security] 20210129 Re: Linux Kernel: local priv escalation via futexes (MLIST)
[oss-security] 20210129 Re: Linux Kernel: local priv escalation via futexes (MLIST)
[oss-security] 20210201 Re: Linux Kernel: local priv escalation via futexes (MLIST)
DSA-4843 (DEBIAN)
[debian-lts-announce] 20210212 [SECURITY] [DLA 2557-1] linux-4.19 security update (MLIST)
https://security.netapp.com/advisory/ntap-20210304-0005/ (CONFIRM)
[debian-lts-announce] 20210309 [SECURITY] [DLA 2586-1] linux security update (MLIST)
FEDORA-2021-6e805a5051 ()
FEDORA-2021-879c756377 ()
CVE: CVE-2021-3348
CVE: CVE-2021-3348
Id:
CVE-2021-3348
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3348
Comment
: nbd_add_socket in drivers/block/nbd.c in the Linux kernel through 5.10.12 has an ndb_queue_rq use-after-free that could be triggered by local attackers (with access to the nbd device) via an I/O request at a certain point during device setup, aka CID-b98e762e3d71.
CVSSv2 Score:
4.4
Access vector:
LOCAL
Access complexity:
MEDIUM
Authentication:
NONE
Confidentiality impact:
PARTIAL
Integrity impact:
PARTIAL
Availability impact:
PARTIAL
CVSSv2 Vector:
AV:L/AC:M/Au:N/C:P/I:P/A:P
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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b98e762e3d71e893b221f871825dc64694cfb258 (MISC)
https://www.openwall.com/lists/oss-security/2021/01/28/3 (MISC)
[oss-security] 20210201 Re: Re: Linux kernel: linux-block: nbd: use-after-free Read in nbd_queue_rq (MLIST)
[debian-lts-announce] 20210330 [SECURITY] [DLA 2610-1] linux-4.19 security update (MLIST)
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