CVE-2019-18348 Other in n/a

What is CVE-2019-18348?

CVE-2019-18348 is a medium-severity vulnerability in Python Python, published on 23 Oct 2019. 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

An issue was discovered in urllib2 in Python 2.x through 2.7.17 and urllib in Python 3.x through 3.8.0. CRLF injection is possible if the attacker controls a url parameter, as demonstrated by the first argument to urllib.request.urlopen with \r\n (specifically in the host component of a URL) followed by an HTTP header. This is similar to the CVE-2019-9740 query string issue and the CVE-2019-9947 path string issue. (This is not exploitable when glibc has CVE-2016-10739 fixed.). This is fixed in: v2.7.18, v2.7.18rc1; v3.5.10, v3.5.10rc1; v3.6.11, v3.6.11rc1, v3.6.12; v3.7.8, v3.7.8rc1, v3.7.9; v3.8.3, v3.8.3rc1, v3.8.4, v3.8.4rc1, v3.8.5, v3.8.6, v3.8.6rc1.

Weakness: CWE-74

Which versions are affected by CVE-2019-18348?

It affects 1 product.

Products include Python Python.

How do I fix CVE-2019-18348?

Upgrade to a fixed version.

Is CVE-2019-18348 being exploited?

There is no known exploitation of CVE-2019-18348 in the wild and no public exploit code.

Other vulnerabilities in Python Python

• CVE-2008-5031 Integer overflow in n/a Critical 10.0
• CVE-2014-4650 Path traversal in n/a Critical 9.8
• CVE-2016-5636 Integer overflow in n/a Critical 9.8
• CVE-2007-4559 Path traversal in n/a Critical 9.8
• CVE-2017-17522 Command injection in n/a High 8.8

All Python Python vulnerabilities

Sources

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

Also known as ALPINE-CVE-2019-18348, DEBIAN-CVE-2019-18348, GHSA-v3f8-6665-x7rx, PSF-2019-7, SUSE-SU-2020:0750-1, UBUNTU-CVE-2019-18348.