CVE-2020-8449 Security feature bypass in n/a

What is CVE-2020-8449?

CVE-2020-8449 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 4 Feb 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in Squid before 4.10. Due to incorrect input validation, it can interpret crafted HTTP requests in unexpected ways to access server resources prohibited by earlier security filters.

Weakness: CWE-668

Which versions are affected by CVE-2020-8449?

It affects 5 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Opensuse Leap, Squid-Cache Squid.

How do I fix CVE-2020-8449?

Upgrade to a fixed version.

Is CVE-2020-8449 being exploited?

There is no known exploitation of CVE-2020-8449 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALPINE-CVE-2020-8449, DEBIAN-CVE-2020-8449, GHSA-rmc2-g977-jr5r, UBUNTU-CVE-2020-8449.