CVE-2020-8450

Publication date 4 February 2020

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.3 · High

Score breakdown

Description

An issue was discovered in Squid before 4.10. Due to incorrect buffer management, a remote client can cause a buffer overflow in a Squid instance acting as a reverse proxy.

Read the notes from the security team

Status

Package Ubuntu Release Status
squid 21.04 hirsute
Fixed in 4.9-2ubuntu4
20.10 groovy
Fixed in 4.9-2ubuntu4
20.04 LTS focal
Fixed in 4.9-2ubuntu4
19.10 eoan
Fixed in 4.8-1ubuntu2.2
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
squid3 21.04 hirsute Not in release
20.10 groovy Not in release
20.04 LTS focal Not in release
19.10 eoan Not in release
18.04 LTS bionic
Fixed in 3.5.27-1ubuntu1.5
16.04 LTS xenial
Fixed in 3.5.12-1ubuntu7.10
14.04 LTS trusty Not in release

Notes

mdeslaur

same commits as CVE-2020-8449

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
squid
squid3

Severity score breakdown

CVSS version: CVSS v3.0

Base score 7.3 · High

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

References

Related Ubuntu Security Notices (USN)

    • USN-4289-1
    • Squid vulnerabilities
    • 20 February 2020

Other references

Access our resources on patching vulnerabilities