CVE-2018-1060 Denial of service in python

What is CVE-2018-1060?

CVE-2018-1060 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 18 Jun 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

python before versions 2.7.15, 3.4.9, 3.5.6rc1, 3.6.5rc1 and 3.7.0 is vulnerable to catastrophic backtracking in pop3lib's apop() method. An attacker could use this flaw to cause denial of service.

Weakness: CWE-20

Which versions are affected by CVE-2018-1060?

It affects 8 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Python Python, Redhat Ansible Tower, Redhat Enterprise Linux Desktop and 2 more.

How do I fix CVE-2018-1060?

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-2018-1060 being exploited?

There is no known exploitation of CVE-2018-1060 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-2018-1060, DEBIAN-CVE-2018-1060, GHSA-7hp6-577h-hcgr, PSF-2018-3, UBUNTU-CVE-2018-1060.