CVE-2017-17817 Use after free in n/a

What is CVE-2017-17817?

CVE-2017-17817 is a medium-severity use after free vulnerability in Canonical Ubuntu Linux, published on 21 Dec 2017. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

In Netwide Assembler (NASM) 2.14rc0, there is a use-after-free in pp_verror in asm/preproc.c that will cause a remote denial of service attack.

Weakness: CWE-416

Which versions are affected by CVE-2017-17817?

It affects 2 products.

Products include Canonical Ubuntu Linux, Nasm Netwide Assembler.

How do I fix CVE-2017-17817?

Upgrade to a fixed version.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2017-17817 being exploited?

There is no known exploitation of CVE-2017-17817 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 DEBIAN-CVE-2017-17817, GHSA-2v7v-w7p2-84j7, UBUNTU-CVE-2017-17817.