Lucene search
K
Database
Vendors
Products
Years
CVSS
Scanner
Agent Scanning
API Scanning
Manual Audit
Perimeter Scanner
Scanning
Projects
Email
Webhook
Plugins
Resources
Documents
Blog
Glossary
FAQ
Pricing
Contacts
About Us
Partners
Branding Guideline
amazonAmazonALAS-2021-1524
HistoryJul 20, 2021 - 10:24 p.m.

Important: kernel

2021-07-2022:24:00
alas.aws.amazon.com
37

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.2 High

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

0.002 Low

EPSS

Percentile

55.8%

JSON

Issue Overview:

An out-of-bounds write flaw was found in the Linux kernel’s seq_file in the Filesystem layer. This flaw allows a local attacker with a user privilege to gain access to out-of-bound memory, leading to a system crash or a leak of internal kernel information. The issue results from not validating the size_t-to-int conversion prior to performing operations. The highest threat from this vulnerability is to data integrity, confidentiality and system availability. (CVE-2021-33909)

Affected Packages:

kernel

Issue Correction:
Run yum update kernel to update your system.

New Packages:

i686:  
    kernel-debuginfo-4.14.238-125.422.amzn1.i686  
    kernel-4.14.238-125.422.amzn1.i686  
    kernel-tools-4.14.238-125.422.amzn1.i686  
    kernel-tools-debuginfo-4.14.238-125.422.amzn1.i686  
    kernel-devel-4.14.238-125.422.amzn1.i686  
    kernel-headers-4.14.238-125.422.amzn1.i686  
    perf-4.14.238-125.422.amzn1.i686  
    kernel-debuginfo-common-i686-4.14.238-125.422.amzn1.i686  
    kernel-tools-devel-4.14.238-125.422.amzn1.i686  
    perf-debuginfo-4.14.238-125.422.amzn1.i686  
  
src:  
    kernel-4.14.238-125.422.amzn1.src  
  
x86_64:  
    kernel-devel-4.14.238-125.422.amzn1.x86_64  
    kernel-headers-4.14.238-125.422.amzn1.x86_64  
    kernel-debuginfo-common-x86_64-4.14.238-125.422.amzn1.x86_64  
    kernel-4.14.238-125.422.amzn1.x86_64  
    perf-4.14.238-125.422.amzn1.x86_64  
    kernel-tools-4.14.238-125.422.amzn1.x86_64  
    kernel-tools-debuginfo-4.14.238-125.422.amzn1.x86_64  
    perf-debuginfo-4.14.238-125.422.amzn1.x86_64  
    kernel-tools-devel-4.14.238-125.422.amzn1.x86_64  
    kernel-debuginfo-4.14.238-125.422.amzn1.x86_64

Additional References

Red Hat: CVE-2021-33909

Mitre: CVE-2021-33909

OSVersionArchitecturePackageVersionFilename
Amazon Linux1i686kernel-debuginfo< 4.14.238-125.422.amzn1kernel-debuginfo-4.14.238-125.422.amzn1.i686.rpm
Amazon Linux1i686kernel< 4.14.238-125.422.amzn1kernel-4.14.238-125.422.amzn1.i686.rpm
Amazon Linux1i686kernel-tools< 4.14.238-125.422.amzn1kernel-tools-4.14.238-125.422.amzn1.i686.rpm
Amazon Linux1i686kernel-tools-debuginfo< 4.14.238-125.422.amzn1kernel-tools-debuginfo-4.14.238-125.422.amzn1.i686.rpm
Amazon Linux1i686kernel-devel< 4.14.238-125.422.amzn1kernel-devel-4.14.238-125.422.amzn1.i686.rpm
Amazon Linux1i686kernel-headers< 4.14.238-125.422.amzn1kernel-headers-4.14.238-125.422.amzn1.i686.rpm
Amazon Linux1i686perf< 4.14.238-125.422.amzn1perf-4.14.238-125.422.amzn1.i686.rpm
Amazon Linux1i686kernel-debuginfo-common-i686< 4.14.238-125.422.amzn1kernel-debuginfo-common-i686-4.14.238-125.422.amzn1.i686.rpm
Amazon Linux1i686kernel-tools-devel< 4.14.238-125.422.amzn1kernel-tools-devel-4.14.238-125.422.amzn1.i686.rpm
Amazon Linux1i686perf-debuginfo< 4.14.238-125.422.amzn1perf-debuginfo-4.14.238-125.422.amzn1.i686.rpm
Rows per page:
1-10 of 201

Related

cnvd 1
nessus 72
githubexploit 4
oraclelinux 11
osv 10
fedora 3
openvas 21
amazon 1
veracode 1
redhatcve 1
virtuozzo 1
cbl_mariner 2
f5 1
prion 1
cloudlinux 2
redhat 22
ubuntu 7
ubuntucve 1
cve 1
debiancve 1
attackerkb 2
qualysblog 3
photon 7
avleonov 1
rocky 1
suse 3
almalinux 1
archlinux 4
thn 2
mageia 2
ibm 1
packetstorm 1
cloudfoundry 1
debian 5
centos 1
cnvd
cnvd
Linux kernel input validation error vulnerability (CNVD-2021-53926)
2021-07-23 00:00:00
nessus
nessus
RHEL 8 : kernel (RHSA-2021:2722)
2021-07-21 00:00:00
Amazon Linux 2 : kernel (ALASKERNEL-5.10-2022-003)
2022-05-02 00:00:00
Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2021-9371)
2021-07-22 00:00:00
githubexploit
githubexploit
Exploit for Classic Buffer Overflow in Linux Linux Kernel
2021-07-21 18:22:55
Exploit for Classic Buffer Overflow in Linux Linux Kernel
2021-07-21 04:04:49
Exploit for Classic Buffer Overflow in Linux Linux Kernel
2021-09-02 04:51:54
oraclelinux
oraclelinux
Unbreakable Enterprise kernel-container security update
2021-07-22 00:00:00
Unbreakable Enterprise kernel-container security update
2021-07-22 00:00:00
Unbreakable Enterprise kernel security update
2021-07-22 00:00:00
osv
osv
[Security] Linux kernel vulnerability advisory
2021-12-01 00:00:00
CVE-2021-33909
2021-07-20 19:15:09
linux, linux-aws, linux-azure, linux-gcp, linux-gke-5.3, linux-hwe, linux-lts-xenial, linux-kvm, linux-oracle, linux-raspi, linux-raspi2-5.3 vulnerability
2021-07-20 21:33:45
fedora
fedora
[SECURITY] Fedora 34 Update: kernel-tools-5.13.3-200.fc34
2021-07-22 01:15:35
[SECURITY] Fedora 34 Update: kernel-headers-5.13.3-200.fc34
2021-07-22 01:15:35
[SECURITY] Fedora 34 Update: kernel-5.13.4-200.fc34
2021-07-22 01:15:35
openvas
openvas
Fedora: Security Advisory for kernel (FEDORA-2021-07dc0b3eb1)
2021-07-27 00:00:00
Huawei EulerOS: Security Advisory for kernel (EulerOS-SA-2021-2570)
2021-10-12 00:00:00
Ubuntu: Security Advisory (USN-5014-1)
2021-07-21 00:00:00
amazon
amazon
Important: kernel
2021-07-20 22:24:00
veracode
veracode
Privilege Escalation
2021-08-12 15:38:28
redhatcve
redhatcve
CVE-2021-33909
2021-07-20 12:55:12
virtuozzo
virtuozzo
[Important] [Security] Virtuozzo ReadyKernel patch 130.0 for Virtuozzo Hybrid Server 7.0, 7.5 and Virtuozzo Hybrid Infrastructure 3.5, 4.0, 4.5, 4.6
2021-07-22 00:00:00
cbl_mariner
cbl_mariner
CVE-2021-33909 affecting package kernel 5.10.78.1-1
2022-04-09 06:52:47
CVE-2021-33909 affecting package kernel 5.10.168.1-1
2021-09-09 15:03:26
f5
f5
K75133288 : Linux kernel vulnerability CVE-2021-33909
2021-08-03 00:00:00
prion
prion
Integer overflow
2021-07-20 19:15:00
cloudlinux
cloudlinux
Fix of CVE: CVE-2021-33909
2021-09-21 22:06:27
Fix of CVE: CVE-2021-33909
2021-09-21 22:06:03
redhat
redhat
(RHSA-2021:2722) Important: kernel security update
2021-07-20 13:32:30
(RHSA-2021:2723) Important: kpatch-patch security update
2021-07-20 19:50:48
(RHSA-2021:2727) Important: kpatch-patch security update
2021-07-20 19:53:56
ubuntu
ubuntu
Linux kernel vulnerability
2021-07-20 00:00:00
Kernel Live Patch Security Notice
2021-07-26 00:00:00
Linux kernel vulnerabilities
2021-07-20 00:00:00
ubuntucve
ubuntucve
CVE-2021-33909
2021-07-20 00:00:00
cve
cve
CVE-2021-33909
2021-07-20 19:15:00
debiancve
debiancve
CVE-2021-33909
2021-07-20 19:15:00
attackerkb
attackerkb
CVE-2020-8835
2020-03-30 00:00:00
CVE-2021-33909
2021-07-20 00:00:00
qualysblog
qualysblog
Sequoia: A Local Privilege Escalation Vulnerability in Linux’s Filesystem Layer (CVE-2021-33909)
2021-07-20 12:54:49
CVE-2021-33910: Denial of Service (Stack Exhaustion) in systemd (PID 1)
2021-07-20 12:55:42
Qualys Research Nominated for Pwnie Awards 2021
2021-08-02 15:59:06
photon
photon
Important Photon OS Security Update - PHSA-2021-0270
2021-07-20 00:00:00
Important Photon OS Security Update - PHSA-2021-0065
2021-07-21 00:00:00
Home Download Photon OS User Documentation FAQ Security Advisories Related Information Lightwave - PHSA-2021-2.0-0370
2021-07-22 00:00:00
avleonov
avleonov
Last Week’s Security news: Pegasus, SeriousSAM, Sequoia
2021-07-26 16:46:10
rocky
rocky
kernel security and bug fix update
2021-07-20 13:30:15
suse
suse
Security update for the Linux Kernel (important)
2021-07-20 00:00:00
Security update for the Linux Kernel (important)
2021-07-20 00:00:00
Security update for the Linux Kernel (important)
2021-07-22 00:00:00
almalinux
almalinux
Important: kernel security and bug fix update
2021-07-20 13:30:15
archlinux
archlinux
[ASA-202107-48] linux: privilege escalation
2021-07-21 00:00:00
[ASA-202107-49] linux-zen: privilege escalation
2021-07-21 00:00:00
[ASA-202107-51] linux-lts: privilege escalation
2021-07-21 00:00:00
thn
thn
New Windows and Linux Flaws Give Attackers Highest System Privileges
2021-07-21 06:37:00
Looney Tunables: New Linux Flaw Enables Privilege Escalation on Major Distributions
2023-10-04 07:21:00
mageia
mageia
Updated kernel-linus packages fix security vulnerabilities
2021-07-22 10:08:00
Updated kernel packages fix security vulnerabilities
2021-07-22 10:08:00
ibm
ibm
Security Bulletin: There are multiple vulnerabilities in the Linux Kernel used in IBM Elastic Storage System
2021-12-21 18:13:50
packetstorm
packetstorm
Sequoia: A Deep Root In Linux's Filesystem Layer
2021-07-21 00:00:00
cloudfoundry
cloudfoundry
USN-5017-1: Linux kernel vulnerabilities | Cloud Foundry
2021-09-07 00:00:00
debian
debian
[SECURITY] [DLA 2713-2] linux security update
2021-07-20 20:03:38
[SECURITY] [DLA 2714-1] linux-4.19 security update
2021-07-20 19:58:55
[SECURITY] [DSA 4941-1] linux security update
2021-07-20 12:53:32
centos
centos
bpftool, kernel, perf, python security update
2021-07-22 13:52:55

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.2 High

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

0.002 Low

EPSS

Percentile

55.8%

JSON
Related for ALAS-2021-1524
cnvd1nessus72githubexploit4oraclelinux11osv10fedora3openvas21amazon1veracode1redhatcve1virtuozzo1cbl_mariner2f51prion1cloudlinux2redhat22ubuntu7ubuntucve1cve1debiancve1attackerkb2qualysblog3photon7avleonov1rocky1suse3almalinux1archlinux4thn2mageia2ibm1packetstorm1cloudfoundry1debian5centos1