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The vulnerability of the Brotli data compression algorithm lies in the lack of a mechanism to verify the size of the copied data. This allows attackers to compromise the integrity of the data and also cause service failures.

🗓️ 30 Mar 2021 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec
 bdu_fstec🔗 bdu.fstec.ru👁 10 Views

Brotli flaw: no data size check enables attackers to corrupt data and disrupt service.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
altlinux
ALT Linux		Security fix for the ALT Linux 10 package dotnet-bootstrap-5.0 version 5.0.15-alt1
2 Apr 202200:00
–altlinux
altlinux
ALT Linux		Security fix for the ALT Linux 10 package dotnet-runtime-5.0 version 5.0.15-alt1
2 Apr 202200:00
–altlinux
altlinux
ALT Linux		Security fix for the ALT Linux 10 package dotnet-bootstrap-3.1 version 3.1.23-alt1
2 Apr 202200:00
–altlinux
altlinux
ALT Linux		Security fix for the ALT Linux 10 package dotnet-coreclr-3.1 version 3.1.23-alt1
2 Apr 202200:00
–altlinux
ibm
IBM Security Bulletins		Security Bulletin: Cloud Pak for Security uses packages that are vulnerable to several CVEs
19 Oct 202115:38
–ibm
ibm
IBM Security Bulletins		Security Bulletin: Multiple Security Vulnerabilities fixed in IBM Security Verify Access
7 Jan 202200:24
–ibm
ibm
IBM Security Bulletins		Security Bulletin: IBM QRadar SIEM Application Framework Base Image is vulnerable to using components with Known Vulnerabilities
3 Dec 202118:52
–ibm
ibm
IBM Security Bulletins		Security Bulletin: Multiple Security Vulnerabilities may affect IBM Robotic Process Automation for Cloud Pak
20 Aug 202218:29
–ibm
attackerkb
ATTACKERKB		CVE-2020-8927
15 Sep 202010:15
–attackerkb
nessus
Tenable Nessus		Alibaba Cloud Linux 3 : 0118: brotli (ALINUX3-SA-2022:0118)
14 May 202500:00
–nessus
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Vulners
Node
OR
jyrki_alakuijalabrotliRange<1.0.8
ibmibm_robotic_process_automationRange<21.0.2.3
fedorafedoraMatch31
fedorafedoraMatch32
novellopensuse_leapMatch15.2
fedorafedoraMatch33
SourceLink
githubwww.github.com/google/brotli/releases/tag/v1.0.9
listswww.lists.fedoraproject.org/archives/list/[email protected]/message/356JOYTWW4BWSZ42SEFLV7NYHL3S3AEH/
listswww.lists.fedoraproject.org/archives/list/[email protected]/message/J4E265WKWKYMK2RYYSIXBEGZTDY5IQE6/
listswww.lists.fedoraproject.org/archives/list/[email protected]/message/M4VCDOJGL6BK3HB4XRD2WETBPYX2ITF6/
listswww.lists.fedoraproject.org/archives/list/[email protected]/message/MMBKACMLSRX7JJSKBTR35UOEP2WFR6QP/
listswww.lists.fedoraproject.org/archives/list/[email protected]/message/W23CUADGMVMQQNFKHPHXVP7RPZJZNN6I/
listswww.lists.fedoraproject.org/archives/list/[email protected]/message/WW62OZEY2GHJL4JCOLJRBSRETXDHMWRK/
listswww.lists.opensuse.org/opensuse-security-announce/2020-09/msg00108.html
nvdwww.nvd.nist.gov/vuln/detail/CVE-2020-8927
security-trackerwww.security-tracker.debian.org/tracker/CVE-2020-8927
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02 Dec 2025 00:00Current
6.9Medium risk
Vulners AI Score6.9
CVSS 26.4
CVSS 36.5
EPSS0.03217
brotli flawdata size checkremote attackersdata integrityservice disruption
10