CVE-2020-25219 Denial of service in n/a

What is CVE-2020-25219?

CVE-2020-25219 is a high-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 9 Sep 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

url::recvline in url.cpp in libproxy 0.4.x through 0.4.15 allows a remote HTTP server to trigger uncontrolled recursion via a response composed of an infinite stream that lacks a newline character. This leads to stack exhaustion.

Weakness: CWE-674

Which versions are affected by CVE-2020-25219?

It affects 5 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Libproxy Project Libproxy, Opensuse Leap.

How do I fix CVE-2020-25219?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2020-25219 being exploited?

There is no known exploitation of CVE-2020-25219 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 AZL-6645, AZL-7270, DEBIAN-CVE-2020-25219, DLA-2372-1, GHSA-pj93-8v65-p9w3, MGASA-2020-0373 and 3 more.