Finding Cisco devices running IOS XE
Cisco recently disclosed a command execution vulnerability that affects some versions of IOS XE SD-WAN software running on Cisco routing devices and virtual instances. With a CVSSv3 score of 7.8, this vulnerability (assigned CVE-2021-1529) is due to inadequate input validation in the command line interface (CLI), allowing an authenticated attacker who provides crafted CLI input to execute commands with root privileges. This vulnerability follows a handful of SD-WAN vulns Cisco has addressed this year.
Along with the disclosure, Cisco announced updated software to address this vulnerability. However, it is only for universal IOS XE releases and not standalone Cisco IOS XE SD-WAN releases. And with no mitigations or workarounds offered, folks should update affected devices and virtual instances as soon as possible.
_asset.protocol:snmp AND protocol:snmp AND snmp.sysDesc:"IOS-XE" AND (_asset.protocol:telnet or _asset.protocol:ssh)
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September 30, 2022
Finding Microsoft Exchange Servers on your network
GTSC, a Vietnamese security firm, recently discovered two zero-day vulnerabilities that affect Microsoft Exchange Server 2013, 2016, and 2019. These two vulnerabilities are being tracked as CVE-2022-41040 and CVE-2022-41082.
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Finding DrayTek Vigor routers
The Trellix Threat Labs Vulnerability Research team recently published vulnerability details affecting almost 30 models of DrayTek Vigor routers. This vulnerability resides in the management interface login page and is trivial to exploit via buffer overflow. An …Read More
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Hunting for X.509 Certificates
X.509 certificates are used to secure communications over both trusted and untrusted networks. Protocols such as Transport Layer Security (TLS) rely on X.509 certificates to keep their communications secure between endpoints. Each X.509 certificate is composed of a public …Read More