CVE-2018-19519 Memory corruption in n/a
A stack-based buffer over-read in tcpdump allows attackers to cause denial of service or disclose information via crafted packet data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2018-19519?
CVE-2018-19519 is a medium-severity memory corruption vulnerability in Tcpdump Tcpdump, published on 25 Nov 2018. 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 tcpdump 4.9.2, a stack-based buffer over-read exists in the print_prefix function of print-hncp.c via crafted packet data because of missing initialization.
Which versions are affected by CVE-2018-19519?
It affects 1 product.
Linux distribution packages (18)
tcpdump Red Hat:enterprise_linux:7::client | All versions | 14:4.9.2-4.el7_7.1 |
tcpdump-debuginfo Red Hat:enterprise_linux:7::client | All versions | 14:4.9.2-4.el7_7.1 |
tcpdump Red Hat:enterprise_linux:7::computenode | All versions | 14:4.9.2-4.el7_7.1 |
tcpdump-debuginfo Red Hat:enterprise_linux:7::computenode | All versions | 14:4.9.2-4.el7_7.1 |
tcpdump Red Hat:enterprise_linux:7::server | All versions | 14:4.9.2-4.el7_7.1 |
tcpdump-debuginfo Red Hat:enterprise_linux:7::server | All versions | 14:4.9.2-4.el7_7.1 |
tcpdump Red Hat:enterprise_linux:7::workstation | All versions | 14:4.9.2-4.el7_7.1 |
tcpdump-debuginfo Red Hat:enterprise_linux:7::workstation | All versions | 14:4.9.2-4.el7_7.1 |
tcpdump Red Hat:enterprise_linux:8::appstream | All versions | 14:4.9.2-6.el8 |
tcpdump-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 14:4.9.2-6.el8 |
tcpdump-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 14:4.9.2-6.el8 |
tcpdump SUSE:Linux Enterprise Desktop 12 SP3 | All versions | 4.9.2-14.8.1 |
tcpdump SUSE:Linux Enterprise Desktop 12 SP4 | All versions | 4.9.2-14.8.1 |
tcpdump SUSE:Linux Enterprise Module for Basesystem 15 | All versions | 4.9.2-3.3.1 |
tcpdump SUSE:Linux Enterprise Server 12 SP3 | All versions | 4.9.2-14.8.1 |
tcpdump SUSE:Linux Enterprise Server 12 SP4 | All versions | 4.9.2-14.8.1 |
tcpdump SUSE:Linux Enterprise Server for SAP Applications 12 SP3 | All versions | 4.9.2-14.8.1 |
tcpdump SUSE:Linux Enterprise Server for SAP Applications 12 SP4 | All versions | 4.9.2-14.8.1 |
Products include Tcpdump Tcpdump.
How do I fix CVE-2018-19519?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2018-19519 being exploited?
There is no known exploitation of CVE-2018-19519 in the wild and no public exploit code.
Other vulnerabilities in Tcpdump Tcpdump
Sources
Also known as DEBIAN-CVE-2018-19519, ECHO-73f3-1173-c1cb, GHSA-7252-xx9j-xr4g, MGASA-2018-0492, RHSA-2019:3976, RHSA-2020:1604 and 3 more.