Infinite loop in Tcpdump - CVE-2017-12995

Vulnerability identifier: #VU8334

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-2017-12995

CWE-ID: CWE-835

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to infinite loop in the DNS component. A remote attacker can send specially crafted data and cause the application to crash.

Successful exploitation of the vulnerability results in denial of service.

Tcpdump
Debian Linux
Gentoo Linux
Arch Linux
IBM AIX
Red Hat Enterprise Linux for IBM System z (Structure A)
Red Hat Enterprise Linux for Power 9
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Server
Ubuntu
Slackware Linux
tcpdump (Red Hat package)

Update to version 4.9.2.

tcpdump (Red Hat package) - update to 4.9.2-3.el7

• http://www.tcpdump.org/tcpdump-changes.txt

• Multiple vulnerabilities in Tcpdump
• Arch Linux update for tcpdump
• Debian update for tcpdump
• Gentoo update for Tcpdump
• Ubuntu update for tcpdump
• Ubuntu update for tcpdump
• Slackware Linux update for tcpdump
• Multiple vulnerabilities in IBM AIX
• Red Hat Enterprise Linux 7 update for tcpdump