CVE-2016-4021 Denial of service in n/a
Attackers can cause a denial of service via infinite loop in pgpdump by providing crafted input, affecting users of this PGP analysis tool.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2016-4021?
CVE-2016-4021 is a high-severity denial of service vulnerability in Fedoraproject Fedora, published on 26 May 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The read_binary function in buffer.c in pgpdump before 0.30 allows context-dependent attackers to cause a denial of service (infinite loop and CPU consumption) via crafted input, as demonstrated by the \xa3\x03 string.
Weakness: CWE-399
Which versions are affected by CVE-2016-4021?
It affects 2 products.
Products include Fedoraproject Fedora, Pgpdump Project Pgpdump.
How do I fix CVE-2016-4021?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2016-4021 being exploited?
There is no known exploitation of CVE-2016-4021 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as DEBIAN-CVE-2016-4021, DLA-768-1, GHSA-5xfq-6ph6-q9hw, MGASA-2016-0157, UBUNTU-CVE-2016-4021.