Vulnerability Details : 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 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.
Vulnerability category: Overflow
Products affected by CVE-2020-8927
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:.net_core:*:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:powershell:*:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:powershell:*:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:powershell:*:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:visual_studio_2022:17.1:*:*:*:*:*:*:*
- cpe:2.3:a:google:brotli:*:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
- 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:o:opensuse:leap:15.2:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-8927
0.95%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 84 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-8927
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.4
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:P/A:P |
10.0
|
4.9
|
NIST | |
|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
3.9
|
1.4
|
Google Inc. | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L |
3.9
|
2.5
|
NIST |
CWE ids for CVE-2020-8927
-
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.Assigned by: nvd@nist.gov (Primary)
-
The product parses a formatted message or structure, but it does not handle or incorrectly handles a length field that is inconsistent with the actual length of the associated data.Assigned by: cve-coordination@google.com (Secondary)
References for CVE-2020-8927
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MQLM7ABVCYJLF6JRPF3M3EBXW63GNC27/
[SECURITY] Fedora 35 Update: dotnet3.1-3.1.417-1.fc35 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WW62OZEY2GHJL4JCOLJRBSRETXDHMWRK/
[SECURITY] Fedora 32 Update: golang-github-andybalholm-brotli-1.0.1-1.fc32 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://www.debian.org/security/2020/dsa-4801
Debian -- Security Information -- DSA-4801-1 brotliThird Party Advisory
-
https://github.com/google/brotli/releases/tag/v1.0.9
Release v1.0.9 · google/brotli · GitHubRelease Notes;Third Party Advisory
-
https://usn.ubuntu.com/4568-1/
USN-4568-1: Brotli vulnerability | Ubuntu security notices | UbuntuThird Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/W23CUADGMVMQQNFKHPHXVP7RPZJZNN6I/
[SECURITY] Fedora 32 Update: brotli-1.0.9-3.fc32 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/356JOYTWW4BWSZ42SEFLV7NYHL3S3AEH/
[SECURITY] Fedora 33 Update: brotli-1.0.9-3.fc33 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4TOGTZ2ZWDH662ZNFFSZVL3M5AJXV6JF/
[SECURITY] Fedora 34 Update: dotnet3.1-3.1.417-1.fc34 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2020/12/msg00003.html
[SECURITY] [DLA 2476-1] brotli security updateMailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MMBKACMLSRX7JJSKBTR35UOEP2WFR6QP/
[SECURITY] Fedora 33 Update: golang-github-andybalholm-brotli-1.0.1-1.fc33 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/M4VCDOJGL6BK3HB4XRD2WETBPYX2ITF6/
[SECURITY] Fedora 31 Update: brotli-1.0.9-3.fc31 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/J4E265WKWKYMK2RYYSIXBEGZTDY5IQE6/
[SECURITY] Fedora 31 Update: golang-github-andybalholm-brotli-1.0.1-1.fc31 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZXEQ3GQVELA2T4HNZG7VPMS2HDVXMJRG/
[SECURITY] Fedora 36 Update: dotnet3.1-3.1.417-1.fc36 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00108.html
[security-announce] openSUSE-SU-2020:1578-1: moderate: Security update fMailing List;Third Party Advisory
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