Buffer over-read in Tcpdump - CVE-2017-12894

Vulnerability identifier: #VU8339

CSH Severity: Low

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2017-12894

CWE-ID: CWE-126

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to obtain potentially sensitive information.

The weakness exists due to buffer over-read in the lookup_bytestring component. A remote attacker can send a specially crafted request and retrieve arbitrary files on the system.

Tcpdump
Debian Linux
Gentoo Linux
Arch Linux
IBM AIX
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power 9
Red Hat Enterprise Linux for IBM System z (Structure A)
Ubuntu
Slackware Linux
Red Hat Satellite
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 update for java-1.8.0-ibm
• Red Hat update for java-1.6.0-ibm
• Red Hat update for java-1.7.1-ibm
• Red Hat Enterprise Linux 7 update for tcpdump