CVE-2020-8927

Published on: 09/15/2020 12:00:00 AM UTC

Last Modified on: 04/22/2022 06:53:00 PM UTC

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

Certain versions of Ubuntu Linux from Canonical contain the following vulnerability:

A buffer overflow exists in the Brotli library versions prior to 1.0.8 where an attacker controlling the input length of a "one-shot" decompression request to a script can trigger a crash, which happens when copying over chunks of data larger than 2 GiB. It is recommended to update your Brotli library to 1.0.8 or later. If one cannot update, we recommend to use the "streaming" API as opposed to the "one-shot" API, and impose chunk size limits.

  • CVE-2020-8927 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as MEDIUM severity.
  • Affected Vendor/Software: URL Logo Google LLC - Brotli version <= 1.0.7

CVSS3 Score: 6.5 - MEDIUM

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
NETWORK LOW NONE NONE
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
UNCHANGED NONE LOW LOW

CVSS2 Score: 6.4 - MEDIUM

Access
Vector
Access
Complexity
Authentication
NETWORK LOW NONE
Confidentiality
Impact
Integrity
Impact
Availability
Impact
NONE PARTIAL PARTIAL

CVE References

Description Tags Link
[SECURITY] Fedora 31 Update: golang-github-andybalholm-brotli-1.0.1-1.fc31 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
URL Logo FEDORA FEDORA-2020-e21bd401ad
[SECURITY] Fedora 34 Update: dotnet3.1-3.1.417-1.fc34 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
URL Logo FEDORA FEDORA-2022-d28042f559
Release v1.0.9 · google/brotli · GitHub Release Notes
Third Party Advisory
github.com
text/html
URL Logo CONFIRM github.com/google/brotli/releases/tag/v1.0.9
Debian -- Security Information -- DSA-4801-1 brotli www.debian.org
Depreciated Link
text/html
URL Logo DEBIAN DSA-4801
[SECURITY] [DLA 2476-1] brotli security update lists.debian.org
text/html
URL Logo MLIST [debian-lts-announce] 20201201 [SECURITY] [DLA 2476-1] brotli security update
[SECURITY] Fedora 31 Update: brotli-1.0.9-3.fc31 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
URL Logo FEDORA FEDORA-2020-bc9a739f0c
[SECURITY] Fedora 32 Update: golang-github-andybalholm-brotli-1.0.1-1.fc32 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
URL Logo FEDORA FEDORA-2020-c663fbc46c
[SECURITY] Fedora 35 Update: dotnet3.1-3.1.417-1.fc35 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
URL Logo FEDORA FEDORA-2022-5ecee47acb
USN-4568-1: Brotli vulnerability | Ubuntu security notices | Ubuntu usn.ubuntu.com
text/html
URL Logo UBUNTU USN-4568-1
[SECURITY] Fedora 33 Update: brotli-1.0.9-3.fc33 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
URL Logo FEDORA FEDORA-2020-c76a35b209
[SECURITY] Fedora 32 Update: brotli-1.0.9-3.fc32 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
URL Logo FEDORA FEDORA-2020-9336b65f82
[security-announce] openSUSE-SU-2020:1578-1: moderate: Security update f lists.opensuse.org
text/html
URL Logo SUSE openSUSE-SU-2020:1578
[SECURITY] Fedora 33 Update: golang-github-andybalholm-brotli-1.0.1-1.fc33 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
URL Logo FEDORA FEDORA-2020-22d278923a
[SECURITY] Fedora 36 Update: dotnet3.1-3.1.417-1.fc36 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
URL Logo FEDORA FEDORA-2022-9e046f579a

Related QID Numbers

  • 159206 Oracle Enterprise Linux Security Update for brotli (ELSA-2021-1702)
  • 159702 Oracle Enterprise Linux Security Update for .net 5.0 security and bugfix update (ELSA-2022-0830)
  • 159703 Oracle Enterprise Linux Security Update for .net core 3.1 security and bugfix update (ELSA-2022-0827)
  • 239317 Red Hat Update for brotli (RHSA-2021:1702)
  • 240126 Red Hat Update for .net 5.0 (RHSA-2022:0830)
  • 240131 Red Hat Update for .net 5.0 on rhel 7 (RHSA-2022:0828)
  • 240134 Red Hat Update for .net core 3.1 on rhel 7 (RHSA-2022:0829)
  • 240135 Red Hat Update for .net core 3.1 (RHSA-2022:0827)
  • 282524 Fedora Security Update for dotnet3.1 (FEDORA-2022-d28042f559)
  • 282525 Fedora Security Update for dotnet3.1 (FEDORA-2022-5ecee47acb)
  • 377394 Alibaba Cloud Linux Security Update for brotli (ALINUX3-SA-2022:0118)
  • 500075 Alpine Linux Security Update for brotli
  • 730371 McAfee Web Gateway Multiple Vulnerabilities (WP-3335,WP-4131,WP-4159,WP-4237,WP-4259,WP-4329,WP-4348,WP-4355,WP-4376,WP-4407,WP-4421)
  • 750614 OpenSUSE Security Update for brotli (openSUSE-SU-2020:1578-1)
  • 751460 OpenSUSE Security Update for brotli (openSUSE-SU-2021:3942-1)
  • 900205 CBL-Mariner Linux Security Update for brotli 1.0.7
  • 901706 Common Base Linux Mariner (CBL-Mariner) Security Update for brotli (6341-1)
  • 903579 Common Base Linux Mariner (CBL-Mariner) Security Update for powershell (9079)
  • 903623 Common Base Linux Mariner (CBL-Mariner) Security Update for brotli (2537)
  • 91868 Microsoft .NET Security Update for March 2022
  • 940313 AlmaLinux Security Update for brotli (ALSA-2021:1702)
  • 940461 AlmaLinux Security Update for .NET (ALSA-2022:0827)
  • 940462 AlmaLinux Security Update for .NET (ALSA-2022:0830)
  • 960227 Rocky Linux Security Update for brotli (RLSA-2021:1702)

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
Operating
System
CanonicalUbuntu Linux16.04AllAllAll
Operating
System
CanonicalUbuntu Linux18.04AllAllAll
Operating
System
CanonicalUbuntu Linux20.04AllAllAll
Operating
System
DebianDebian Linux10.0AllAllAll
Operating
System
DebianDebian Linux9.0AllAllAll
Operating
System
FedoraprojectFedora31AllAllAll
Operating
System
FedoraprojectFedora32AllAllAll
Operating
System
FedoraprojectFedora33AllAllAll
Operating
System
FedoraprojectFedora34AllAllAll
Operating
System
FedoraprojectFedora35AllAllAll
Operating
System
FedoraprojectFedora36AllAllAll
ApplicationGoogleBrotliAllAllAllAll
ApplicationGoogleBrotliAllAllAllAll
ApplicationMicrosoft.netAllAllAllAll
ApplicationMicrosoft.net CoreAllAllAllAll
ApplicationMicrosoftPowershellAllAllAllAll
ApplicationMicrosoftVisual Studio 2019AllAllAllAll
ApplicationMicrosoftVisual Studio 202217.1AllAllAll
ApplicationMicrosoftVisual Studio 2022AllAllAllAll
Operating
System
OpensuseLeap15.2AllAllAll
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*:
  • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*:
  • cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*:
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*:
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*:
  • cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*:
  • cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*:
  • cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*:
  • cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*:
  • cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*:
  • cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*:
  • cpe:2.3:a:google:brotli:*:*:*:*:*:*:*:*:
  • cpe:2.3:a:google:brotli:*:*:*:*:*:*:*:*:
  • cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*:
  • cpe:2.3:a:microsoft:.net_core:*:*:*:*:*:*:*:*:
  • cpe:2.3:a:microsoft:powershell:*:*:*:*:*:*:*:*:
  • cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*:
  • cpe:2.3:a:microsoft:visual_studio_2022:17.1:*:*:*:*:*:*:*:
  • cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*:
  • cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*:

Discovery Credit

Jay Lv

Social Mentions

Source Title Posted (UTC)
Twitter Icon @coreclrissues Microsoft Security Advisory CVE-2020-8927 | .NET Remote Code Execution Vulnerability dotnet/runtime/66346 github.com/dotnet/runtime… 2022-03-08 18:30:24
Twitter Icon @runtimeissues Microsoft Security Advisory CVE-2020-8927 | .NET Remote Code Execution Vulnerability dotnet/announcements/211 github.com/dotnet/announc… 2022-03-08 18:30:28
Twitter Icon @jvela .NET 6.0.3, 5.0.15 y 3.1.23, mejoras, correción de bugs, vulnerabilidades CVE-2020-8927, CVE-2022-24464 y CVE-2022-… twitter.com/i/web/status/1… 2022-03-14 06:07:06
Reddit Logo Icon /r/PowerShell Microsoft Security Advisory CVE-2020-8927 | .NET Remote Code Execution Vulnerability · Issue #30 · PowerShell/Announcements 2022-03-21 00:08:50
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