NULL pointer dereference in Tcpreplay - CVE-2019-8376
Published: February 21, 2019 / Updated: June 1, 2021
Vulnerability identifier: #VU17825
CSH Severity: Low
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-8376
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference condition in the get_layer4_v6() function, as defined in the get.c source code file. A remote attacker can send a specially crafted packet capture (pcap) file to the tcpreplay-edit binary, trigger a segmentation fault and cause a DoS condition.
Affected software
Tcpreplay
Arch Linux
Fedora
tcpreplay (Alpine package)
tcpreplay
Arch Linux
Fedora
tcpreplay (Alpine package)
tcpreplay
How to mitigate CVE-2019-8376
Install update from vendor's website.
Tcpreplay - update to 4.3.2
tcpreplay - addressed in versions 4.3.2-1.el6, 4.3.2-1.el7, 4.3.2-1.fc28, 4.3.2-1.fc29, 4.3.2-1.fc30
tcpreplay - addressed in versions 4.3.2-1.el6, 4.3.2-1.el7, 4.3.2-1.fc28, 4.3.2-1.fc29, 4.3.2-1.fc30