Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
None
Attack Vector
Network
0

CVE-2020-8927

Disclosure Date: September 15, 2020
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

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.

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CVSS V3 Severity and Metrics
Base Score:
6.5 Medium
Impact Score:
2.5
Exploitability Score:
3.9
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
Low
Availability (A):
Low

General Information

Vendors

  • canonical,
  • debian,
  • fedoraproject,
  • google,
  • microsoft,
  • opensuse

Products

  • .net,
  • .net core,
  • brotli,
  • debian linux 10.0,
  • debian linux 9.0,
  • fedora 31,
  • fedora 32,
  • fedora 33,
  • fedora 34,
  • fedora 35,
  • fedora 36,
  • leap 15.2,
  • powershell,
  • ubuntu linux 16.04,
  • ubuntu linux 18.04,
  • ubuntu linux 20.04,
  • visual studio 2019,
  • visual studio 2022,
  • visual studio 2022 17.1

References

Advisory

Additional Info

Technical Analysis