Medium severity · published Sep 15, 2020
CVE-2020-8927
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…
6.5
CVSS
3.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.2% · higher than 88% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NE
.net · Microsoft
5.0 through 5.0.14 · source: NVD
NC
.net Core · Microsoft
3.1 through 3.1.22 · source: NVD
BR
Brotli · Google
before 1.0.8 · source: NVD
DL
Debian Linux · Debian
9.0; 10.0 · source: NVD
FE
Fedora · Fedoraproject
31; 32; 33; 34; 35; 36 · source: NVD
LE
Leap · Opensuse
15.2 · source: NVD
PO
Powershell · Microsoft
7.0 before 7.0.9; 7.1 before 7.1.6; 7.2 before 7.2.2 · source: NVD
UL
Ubuntu Linux · Canonical
16.04; 18.04; 20.04 · source: NVD
VS
Visual Studio 2019 · Microsoft
16.0 through 16.11 · source: NVD
VS
Visual Studio 2022 · Microsoft
17.0 through 17.0.7; 17.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-8927
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-8927
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00108.html
Release Notes
https://github.com/google/brotli/releases/tag/v1.0.9
Mailing List
https://lists.debian.org/debian-lts-announce/2020/12/msg00003.html
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/356JOYTWW4BWSZ42SEFLV7NYHL3S3AEH/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4TOGTZ2ZWDH662ZNFFSZVL3M5AJXV6JF/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J4E265WKWKYMK2RYYSIXBEGZTDY5IQE6/
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