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CVE-2018-20679

Status Candidate

Overview

An issue was discovered in BusyBox before 1.30.0. An out of bounds read in udhcp components (consumed by the DHCP server, client, and relay) allows a remote attacker to leak sensitive information from the stack by sending a crafted DHCP message. This is related to verification in udhcp_get_option() in networking/udhcp/common.c that 4-byte options are indeed 4 bytes.

Related Files

Cisco Device Hardcoded Credentials / GNU glibc / BusyBox
Posted Sep 4, 2019
Authored by T. Weber | Site sec-consult.com

Many Cisco devices such as Cisco RV340, Cisco RV340W, Cisco RV345, Cisco RV345P, Cisco RV260, Cisco RV260P, Cisco RV260W, Cisco 160, and Cisco 160W suffer from having hard-coded credentials, known GNU glibc, known BusyBox, and IoT Inspector identified vulnerabilities.

tags | exploit, vulnerability
systems | cisco
advisories | CVE-2014-4043, CVE-2014-9402, CVE-2014-9761, CVE-2014-9984, CVE-2015-1472, CVE-2015-5277, CVE-2015-7547, CVE-2015-8778, CVE-2015-8779, CVE-2015-9261, CVE-2016-2147, CVE-2016-2148, CVE-2016-6301, CVE-2017-1000366, CVE-2017-16544, CVE-2018-20679, CVE-2019-5747
SHA-256 | 3726cd3c69f647990c48b627f7552d3a2fdba185bb79ef1247f427b865bde817
Ubuntu Security Notice USN-3935-1
Posted Apr 3, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3935-1 - Tyler Hicks discovered that BusyBox incorrectly handled symlinks inside tar archives. If a user or automated system were tricked into processing a specially crafted tar archive, a remote attacker could overwrite arbitrary files outside of the current directory. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. Mathias Krause discovered that BusyBox incorrectly handled kernel module loading restrictions. A local attacker could possibly use this issue to bypass intended restrictions. This issue only affected Ubuntu 14.04 LTS. Various other issues were also addressed.

tags | advisory, remote, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2011-5325, CVE-2014-9645, CVE-2015-9261, CVE-2016-2147, CVE-2016-2148, CVE-2017-15873, CVE-2017-16544, CVE-2018-1000517, CVE-2018-20679
SHA-256 | d04293581994ba012e305b667f533a43f91c013c6da677eff4fa9c29ace725ff
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