NULL pointer dereference in libpcap - CVE-2019-15163
Published: October 27, 2019
Vulnerability identifier: #VU22310
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-15163
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 a NULL pointer dreference error within the rpcapd/daemon.c in libpcap if a crypt() call fails. A remote attacker can perform a denial of service (DoS) attack.
Affected software
libpcap
libpcap (Alpine package)
libpcap
Oracle Communications Operations Monitor
Oracle Solaris
Fedora
libpcap (Alpine package)
libpcap
Oracle Communications Operations Monitor
Oracle Solaris
Fedora
How to mitigate CVE-2019-15163
Install update from vendor's website.
libpcap - update to 1.9.1
libpcap (Alpine package) - update to 1.9.1-r0
libpcap - addressed in versions 1.9.1-1.fc29, 1.9.1-1.fc30, 1.9.1-1.fc31
libpcap (Alpine package) - update to 1.9.1-r0
libpcap - addressed in versions 1.9.1-1.fc29, 1.9.1-1.fc30, 1.9.1-1.fc31