6.5
MEDIUM
CVE-2020-8927
Brotli Buffer Overflow Vulnerability
Description

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.

INFO

Published Date :

Sept. 15, 2020, 10:15 a.m.

Last Modified :

Nov. 7, 2023, 3:26 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

2.5

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2020-8927 has a 3 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2020-8927 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Microsoft .net_core
2 Microsoft visual_studio_2019
3 Microsoft .net
4 Microsoft powershell
5 Microsoft visual_studio_2022
1 Canonical ubuntu_linux
1 Fedoraproject fedora
1 Debian debian_linux
1 Opensuse leap
1 Google brotli
: Total Affected Vendor : 6 | Products : 10
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2020-8927.

URL Resource
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00108.html Mailing List Third Party Advisory
https://github.com/google/brotli/releases/tag/v1.0.9 Release Notes Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/12/msg00003.html Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/356JOYTWW4BWSZ42SEFLV7NYHL3S3AEH/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4TOGTZ2ZWDH662ZNFFSZVL3M5AJXV6JF/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J4E265WKWKYMK2RYYSIXBEGZTDY5IQE6/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M4VCDOJGL6BK3HB4XRD2WETBPYX2ITF6/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MMBKACMLSRX7JJSKBTR35UOEP2WFR6QP/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MQLM7ABVCYJLF6JRPF3M3EBXW63GNC27/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W23CUADGMVMQQNFKHPHXVP7RPZJZNN6I/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WW62OZEY2GHJL4JCOLJRBSRETXDHMWRK/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZXEQ3GQVELA2T4HNZG7VPMS2HDVXMJRG/
https://usn.ubuntu.com/4568-1/ Third Party Advisory
https://www.debian.org/security/2020/dsa-4801 Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

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Shubhamthakur1997/CICD-Demo

None

Dockerfile

Updated: 1 year, 2 months ago
0 stars 0 fork 0 watcher
Born at : Sept. 22, 2023, 7:18 a.m. This repo has been linked 8 different CVEs too.
Profile Photo
dcambronero/CloudGuard-ShiftLeft-CICD-AWS

None

Dockerfile

Updated: 1 year, 3 months ago
0 stars 0 fork 0 watcher
Born at : Aug. 11, 2023, 10:13 p.m. This repo has been linked 8 different CVEs too.
Profile Photo
jaydenaung/CloudGuard-ShiftLeft-CICD-AWS

CloudGuard SHIFTLEFT integration with CICD pipeline on AWS

checkpoint cloudguard shiftleft devsecops docker dockerfile buildspec aws cicd-pipeline codepipeline devops codebuild integration

Dockerfile

Updated: 3 years, 8 months ago
3 stars 7 fork 7 watcher
Born at : Oct. 9, 2020, 8:17 a.m. This repo has been linked 8 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2020-8927 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-8927 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference Google Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MMBKACMLSRX7JJSKBTR35UOEP2WFR6QP/ [No types assigned]
    Added Reference Google Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WW62OZEY2GHJL4JCOLJRBSRETXDHMWRK/ [No types assigned]
    Added Reference Google Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J4E265WKWKYMK2RYYSIXBEGZTDY5IQE6/ [No types assigned]
    Added Reference Google Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M4VCDOJGL6BK3HB4XRD2WETBPYX2ITF6/ [No types assigned]
    Added Reference Google Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W23CUADGMVMQQNFKHPHXVP7RPZJZNN6I/ [No types assigned]
    Added Reference Google Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/356JOYTWW4BWSZ42SEFLV7NYHL3S3AEH/ [No types assigned]
    Added Reference Google Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZXEQ3GQVELA2T4HNZG7VPMS2HDVXMJRG/ [No types assigned]
    Added Reference Google Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MQLM7ABVCYJLF6JRPF3M3EBXW63GNC27/ [No types assigned]
    Added Reference Google Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4TOGTZ2ZWDH662ZNFFSZVL3M5AJXV6JF/ [No types assigned]
    Removed Reference Google Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/MMBKACMLSRX7JJSKBTR35UOEP2WFR6QP/
    Removed Reference Google Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/WW62OZEY2GHJL4JCOLJRBSRETXDHMWRK/
    Removed Reference Google Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/M4VCDOJGL6BK3HB4XRD2WETBPYX2ITF6/
    Removed Reference Google Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/J4E265WKWKYMK2RYYSIXBEGZTDY5IQE6/
    Removed Reference Google Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/W23CUADGMVMQQNFKHPHXVP7RPZJZNN6I/
    Removed Reference Google Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/356JOYTWW4BWSZ42SEFLV7NYHL3S3AEH/
    Removed Reference Google Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/ZXEQ3GQVELA2T4HNZG7VPMS2HDVXMJRG/
    Removed Reference Google Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/MQLM7ABVCYJLF6JRPF3M3EBXW63GNC27/
    Removed Reference Google Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/4TOGTZ2ZWDH662ZNFFSZVL3M5AJXV6JF/
  • Modified Analysis by [email protected]

    Apr. 22, 2022

    Action Type Old Value New Value
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/4TOGTZ2ZWDH662ZNFFSZVL3M5AJXV6JF/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/4TOGTZ2ZWDH662ZNFFSZVL3M5AJXV6JF/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/MQLM7ABVCYJLF6JRPF3M3EBXW63GNC27/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/MQLM7ABVCYJLF6JRPF3M3EBXW63GNC27/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/ZXEQ3GQVELA2T4HNZG7VPMS2HDVXMJRG/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/ZXEQ3GQVELA2T4HNZG7VPMS2HDVXMJRG/ Mailing List, Third Party Advisory
    Changed CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* OR *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:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Mar. 27, 2022

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/4TOGTZ2ZWDH662ZNFFSZVL3M5AJXV6JF/ [No Types Assigned]
  • CVE Modified by [email protected]

    Mar. 27, 2022

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/MQLM7ABVCYJLF6JRPF3M3EBXW63GNC27/ [No Types Assigned]
  • CVE Modified by [email protected]

    Mar. 26, 2022

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/ZXEQ3GQVELA2T4HNZG7VPMS2HDVXMJRG/ [No Types Assigned]
  • Modified Analysis by [email protected]

    Mar. 23, 2022

    Action Type Old Value New Value
    Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00108.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00108.html Mailing List, Third Party Advisory
    Changed Reference Type https://lists.debian.org/debian-lts-announce/2020/12/msg00003.html No Types Assigned https://lists.debian.org/debian-lts-announce/2020/12/msg00003.html Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/356JOYTWW4BWSZ42SEFLV7NYHL3S3AEH/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/356JOYTWW4BWSZ42SEFLV7NYHL3S3AEH/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/J4E265WKWKYMK2RYYSIXBEGZTDY5IQE6/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/J4E265WKWKYMK2RYYSIXBEGZTDY5IQE6/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/M4VCDOJGL6BK3HB4XRD2WETBPYX2ITF6/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/M4VCDOJGL6BK3HB4XRD2WETBPYX2ITF6/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/MMBKACMLSRX7JJSKBTR35UOEP2WFR6QP/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/MMBKACMLSRX7JJSKBTR35UOEP2WFR6QP/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/W23CUADGMVMQQNFKHPHXVP7RPZJZNN6I/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/W23CUADGMVMQQNFKHPHXVP7RPZJZNN6I/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/WW62OZEY2GHJL4JCOLJRBSRETXDHMWRK/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/WW62OZEY2GHJL4JCOLJRBSRETXDHMWRK/ Mailing List, Third Party Advisory
    Changed Reference Type https://usn.ubuntu.com/4568-1/ No Types Assigned https://usn.ubuntu.com/4568-1/ Third Party Advisory
    Changed Reference Type https://www.debian.org/security/2020/dsa-4801 No Types Assigned https://www.debian.org/security/2020/dsa-4801 Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
    Added CPE Configuration OR *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:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:* versions from (including) 5.0 up to (including) 5.0.14 *cpe:2.3:a:microsoft:.net_core:*:*:*:*:*:*:*:* versions from (including) 3.1 up to (including) 3.1.22 *cpe:2.3:a:microsoft:powershell:*:*:*:*:*:*:*:* versions from (including) 7.0 up to (excluding) 7.0.9 *cpe:2.3:a:microsoft:powershell:*:*:*:*:*:*:*:* versions from (including) 7.1 up to (excluding) 7.1.6 *cpe:2.3:a:microsoft:powershell:*:*:*:*:*:*:*:* versions from (including) 7.2 up to (excluding) 7.2.2 *cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:* versions from (including) 16.0 up to (including) 16.11 *cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:* versions from (including) 17.0 up to (including) 17.0.7 *cpe:2.3:a:microsoft:visual_studio_2022:17.1:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Dec. 02, 2020

    Action Type Old Value New Value
    Added Reference https://www.debian.org/security/2020/dsa-4801 [No Types Assigned]
  • CVE Modified by [email protected]

    Dec. 02, 2020

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2020/12/msg00003.html [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 26, 2020

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/356JOYTWW4BWSZ42SEFLV7NYHL3S3AEH/ [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 17, 2020

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/M4VCDOJGL6BK3HB4XRD2WETBPYX2ITF6/ [No Types Assigned]
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/J4E265WKWKYMK2RYYSIXBEGZTDY5IQE6/ [No Types Assigned]
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/W23CUADGMVMQQNFKHPHXVP7RPZJZNN6I/ [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 11, 2020

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/WW62OZEY2GHJL4JCOLJRBSRETXDHMWRK/ [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 07, 2020

    Action Type Old Value New Value
    Added Reference https://usn.ubuntu.com/4568-1/ [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 06, 2020

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/MMBKACMLSRX7JJSKBTR35UOEP2WFR6QP/ [No Types Assigned]
  • CVE Modified by [email protected]

    Sep. 30, 2020

    Action Type Old Value New Value
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00108.html [No Types Assigned]
  • Reanalysis by [email protected]

    Sep. 23, 2020

    Action Type Old Value New Value
    Removed CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P)
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:P/A:P)
    Removed CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
  • Initial Analysis by [email protected]

    Sep. 21, 2020

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://github.com/google/brotli/releases/tag/v1.0.9 No Types Assigned https://github.com/google/brotli/releases/tag/v1.0.9 Release Notes, Third Party Advisory
    Added CWE NIST CWE-120
    Added CPE Configuration OR *cpe:2.3:a:google:brotli:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.8
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2020-8927 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2020-8927 weaknesses.

CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow CAPEC-42: MIME Conversion MIME Conversion CAPEC-44: Overflow Binary Resource File Overflow Binary Resource File CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion CAPEC-67: String Format Overflow in syslog() String Format Overflow in syslog() CAPEC-92: Forced Integer Overflow Forced Integer Overflow CAPEC-100: Overflow Buffers Overflow Buffers CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.95 }} 0.12%

score

0.83528

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: