CVE-2017-14493 Memory corruption in n/a

What is CVE-2017-14493?

CVE-2017-14493 is a critical memory corruption vulnerability in Canonical Ubuntu Linux, published on 2 Oct 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Stack-based buffer overflow in dnsmasq before 2.78 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a crafted DHCPv6 request.

Weakness: CWE-119

Which versions are affected by CVE-2017-14493?

It affects 7 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Opensuse Leap, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Workstation and 1 more.

How do I fix CVE-2017-14493?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2017-14493 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-14493 exists.

Public exploit code: 1 Exploit-DB entry and 1 proofs of concept on GitHub.

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-2017-14493, CLEANSTART-2026-CB16973, DEBIAN-CVE-2017-14493, GHSA-7mpq-366q-m6vq, UBUNTU-CVE-2017-14493.