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An issue was discovered in Squid 3.x and 4.x through 4.8....

Moderate severity Unreviewed Published May 24, 2022 to the GitHub Advisory Database • Updated Mar 3, 2023

Package

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Affected versions

Unknown

Patched versions

Unknown

Description

An issue was discovered in Squid 3.x and 4.x through 4.8. Due to incorrect input validation, there is a heap-based buffer overflow that can result in Denial of Service to all clients using the proxy. Severity is high due to this vulnerability occurring before normal security checks; any remote client that can reach the proxy port can trivially perform the attack via a crafted URI scheme.

References

Published by the National Vulnerability Database Nov 26, 2019
Published to the GitHub Advisory Database May 24, 2022
Last updated Mar 3, 2023

Severity

Moderate

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(95th percentile)

Weaknesses

Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer. Learn more on MITRE.

CVE ID

CVE-2019-18676

GHSA ID

GHSA-chw7-jm99-chw8

Source code

No known source code

Dependabot alerts are not supported on this advisory because it does not have a package from a supported ecosystem with an affected and fixed version.

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