Resource exhaustion in GNU C Library (glibc) - CVE-2018-19591

Vulnerability identifier: #VU16149

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-2018-19591

CWE-ID: CWE-400

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 vulnerability exists due to an invalid 'ifname' parameter to __if_nametoindex() in 'sysdeps/unix/sysv/linux/if_index.c'. A remote attacker can invoke a call to the getaddrinfo() function with a 'node' parameter, consume excessive memory and cause the service to crash.

GNU C Library (glibc)
Gentoo Linux
Ubuntu
Fedora
Netcool Operations Insight
IBM Cloud Transformation Advisor
libc6 (Ubuntu package)
glibc

Update to version 2.28.

GNU C Library (glibc) - update to 2.28
Netcool Operations Insight - update to 1.6.8
libc6 (Ubuntu package) - addressed in versions 2.23-0ubuntu11.2, 2.27-3ubuntu1.2, 2.30-0ubuntu2.2
glibc - addressed in versions 2.26-32.fc27, 2.27-35.fc28, 2.28-22.fc29
IBM Cloud Transformation Advisor - update to 3.10.0

• https://sourceware.org/ml/libc-alpha/2018-11/msg00698.html

• Denial of service in GNU Glibc
• Gentoo update for GNU C Library
• Gentoo update for glibc
• Multiple vulnerabilities in IBM Netcool Operations Insight
• Multiple vulnerabilities in IBM Cloud Transformation Advisor
• Ubuntu update for glibc
• Fedora 27 update for glibc
• Fedora 28 update for glibc
• Fedora 29 update for glibc