CVE-2019-9021 Information disclosure in n/a

What is CVE-2019-9021?

CVE-2019-9021 is a critical vulnerability in Canonical Ubuntu Linux, published on 22 Feb 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in PHP before 5.6.40, 7.x before 7.1.26, 7.2.x before 7.2.14, and 7.3.x before 7.3.1. A heap-based buffer over-read in PHAR reading functions in the PHAR extension may allow an attacker to read allocated or unallocated memory past the actual data when trying to parse the file name, a different vulnerability than CVE-2018-20783. This is related to phar_detect_phar_fname_ext in ext/phar/phar.c.

Weakness: CWE-125

Which versions are affected by CVE-2019-9021?

It affects 5 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Netapp Storage Automation Store, Opensuse Leap, Php Php.

How do I fix CVE-2019-9021?

Upgrade to a fixed version.

Is CVE-2019-9021 being exploited?

There is no known exploitation of CVE-2019-9021 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 GHSA-3fr9-q295-2jq3, UBUNTU-CVE-2019-9021.