CVE-2015-7977 Null dereference in n/a

What is CVE-2015-7977?

CVE-2015-7977 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 30 Jan 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

ntpd in NTP before 4.2.8p6 and 4.3.x before 4.3.90 allows remote attackers to cause a denial of service (NULL pointer dereference) via a ntpdc reslist command.

Weakness: CWE-476

Which versions are affected by CVE-2015-7977?

It affects 10 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Freebsd Freebsd, Netapp Clustered Data Ontap, Netapp Oncommand Balance and 4 more.

How do I fix CVE-2015-7977?

Upgrade to a fixed version.

Is CVE-2015-7977 being exploited?

There is no known exploitation of CVE-2015-7977 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-2015-7977, GHSA-cvp4-369g-vpfx, UBUNTU-CVE-2015-7977.