CVE & CISA-KEV Catalog

CVE-2020-8927

MEDIUMEPSS 87th pctl
5.3
CVSS v3
NVD

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.

CWE-130CWE-120Classic Buffer Overflow

How to fix

Remediation Available
brotliDebian
Fixed in:1.0.9-1CVE-2020-8927
Fixed in:1.0.9-1CVE-2020-8927
Fixed in:1.0.9-1CVE-2020-8927
Fixed in:1.0.9-1CVE-2020-8927
brotliUbuntu
Fixed in:1.0.3-1ubuntu1~16.04.2USN-4568-1
Fixed in:1.0.3-1ubuntu1.3USN-4568-1
Fixed in:1.0.7-6ubuntu0.1USN-4568-1
libbrotli1Ubuntu
Fixed in:1.0.3-1ubuntu1~16.04.2USN-4568-1
Fixed in:1.0.3-1ubuntu1.3USN-4568-1
Fixed in:1.0.7-6ubuntu0.1USN-4568-1
python-brotliUbuntu
Fixed in:1.0.3-1ubuntu1~16.04.2USN-4568-1
Fixed in:1.0.3-1ubuntu1.3USN-4568-1
python3-brotliUbuntu
Fixed in:1.0.3-1ubuntu1~16.04.2USN-4568-1
Fixed in:1.0.3-1ubuntu1.3USN-4568-1
Fixed in:1.0.7-6ubuntu0.1USN-4568-1
BrotliWindows application
Affected:1.0.8Fixed in:1.0.8Google
PowerShellWindows application
Affected:7.2 7.2.2Fixed in:7.2.2Microsoft Corporation
Affected:7.0 7.0.9Fixed in:7.0.9Microsoft Corporation
Affected:7.1 7.1.6Fixed in:7.1.6Microsoft Corporation

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityLow
AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Exploit Intelligence

3.24%probability of exploitation in 30 days
87thpercentile

Elevated risk: more likely to be exploited than 87% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.