CVE-2016-7993 Memory corruption in n/a
A buffer overflow in tcpdump's protocol parsers allows attackers to cause denial of service or execute arbitrary code via crafted packets.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2016-7993?
CVE-2016-7993 is a critical memory corruption vulnerability in Tcpdump Tcpdump, published on 28 Jan 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A bug in util-print.c:relts_print() in tcpdump before 4.9.0 could cause a buffer overflow in multiple protocol parsers (DNS, DVMRP, HSRP, IGMP, lightweight resolver protocol, PIM).
Weakness: CWE-119
Which versions are affected by CVE-2016-7993?
It affects 1 product.
Products include Tcpdump Tcpdump.
How do I fix CVE-2016-7993?
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-2016-7993 being exploited?
There is no known exploitation of CVE-2016-7993 in the wild and no public exploit code.
Other vulnerabilities in Tcpdump Tcpdump
Sources
Also known as ALPINE-CVE-2016-7993, DEBIAN-CVE-2016-7993, GHSA-53gw-4j8c-qfw5, UBUNTU-CVE-2016-7993.