CVE-2020-8927
Buffer overflow in Brotli library
Severity Score
6.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
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.
Se presenta un desbordamiento del búfer en la biblioteca Brotli versiones anteriores a 1.0.8, donde un atacante que controla la longitud de entrada de una petición de descompresión "one-shot" en un script puede desencadenar un bloqueo, que ocurre cuando se copian fragmentos de datos de más de 2 GiB . Se recomienda actualizar su biblioteca de Brotli a la versión 1.0.8 o posterior. Si no se puede actualizar, recomendamos usar la API "streaming" en lugar de la API "one-shot" e imponer límites de tamaño de fragmentos
A buffer overflow flaw was found in the Brotli library where an attacker could control the input length of a "one-shot" decompression request to a script that can trigger a crash. This issue can happen when copying chunks of data larger than 2 GiB.
*Credits:
Jay Lv <nengzhi.pnz@antgroup.com>
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2020-02-12 CVE Reserved
- 2020-09-15 CVE Published
- 2024-08-04 CVE Updated
- 2024-08-22 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
- CWE-130: Improper Handling of Length Parameter Inconsistency
CAPEC
References (16)
| URL | Tag | Source |
|---|---|---|
| https://github.com/google/brotli/releases/tag/v1.0.9 | Release Notes | |
| https://lists.debian.org/debian-lts-announce/2020/12/msg00003.html | Mailing List |
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| URL | Date | SRC |
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| URL | Date | SRC |
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Google Search vendor "Google" | Brotli Search vendor "Google" for product "Brotli" | < 1.0.8 Search vendor "Google" for product "Brotli" and version " < 1.0.8" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0" | - |
Affected
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| Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 31 Search vendor "Fedoraproject" for product "Fedora" and version "31" | - |
Affected
| ||||||
| Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 32 Search vendor "Fedoraproject" for product "Fedora" and version "32" | - |
Affected
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| Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 33 Search vendor "Fedoraproject" for product "Fedora" and version "33" | - |
Affected
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| Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 34 Search vendor "Fedoraproject" for product "Fedora" and version "34" | - |
Affected
| ||||||
| Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 35 Search vendor "Fedoraproject" for product "Fedora" and version "35" | - |
Affected
| ||||||
| Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 36 Search vendor "Fedoraproject" for product "Fedora" and version "36" | - |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04" | esm |
Affected
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| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04" | lts |
Affected
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| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 20.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "20.04" | lts |
Affected
| ||||||
| Opensuse Search vendor "Opensuse" | Leap Search vendor "Opensuse" for product "Leap" | 15.2 Search vendor "Opensuse" for product "Leap" and version "15.2" | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | .net Search vendor "Microsoft" for product ".net" | >= 5.0 <= 5.0.14 Search vendor "Microsoft" for product ".net" and version " >= 5.0 <= 5.0.14" | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | .net Core Search vendor "Microsoft" for product ".net Core" | >= 3.1 <= 3.1.22 Search vendor "Microsoft" for product ".net Core" and version " >= 3.1 <= 3.1.22" | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Powershell Search vendor "Microsoft" for product "Powershell" | >= 7.0 < 7.0.9 Search vendor "Microsoft" for product "Powershell" and version " >= 7.0 < 7.0.9" | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Powershell Search vendor "Microsoft" for product "Powershell" | >= 7.1 < 7.1.6 Search vendor "Microsoft" for product "Powershell" and version " >= 7.1 < 7.1.6" | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Powershell Search vendor "Microsoft" for product "Powershell" | >= 7.2 < 7.2.2 Search vendor "Microsoft" for product "Powershell" and version " >= 7.2 < 7.2.2" | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Visual Studio 2019 Search vendor "Microsoft" for product "Visual Studio 2019" | >= 16.0 <= 16.11 Search vendor "Microsoft" for product "Visual Studio 2019" and version " >= 16.0 <= 16.11" | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Visual Studio 2022 Search vendor "Microsoft" for product "Visual Studio 2022" | >= 17.0 <= 17.0.7 Search vendor "Microsoft" for product "Visual Studio 2022" and version " >= 17.0 <= 17.0.7" | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Visual Studio 2022 Search vendor "Microsoft" for product "Visual Studio 2022" | 17.1 Search vendor "Microsoft" for product "Visual Studio 2022" and version "17.1" | - |
Affected
| ||||||