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Home > Software > Cisco’s IOS XR zero-day vulnerability under attack

Cisco’s IOS XR zero-day vulnerability under attack

Cisco announced that they have found out its Internetwork Operating System zero-day vulnerability is being actively exploited.

Erdem Yasar by Erdem Yasar
September 1, 2020
in Software
1 min read
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Cisco's IOS XR zero-day vulnerability under attack
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Cisco announced a zero-day vulnerability in IOS. It affects the Distance Vector Multicast Routing Protocol which is shipped with the IOS XR version and it is tracked as CVE-2020-3566. Cisco detected the bug that is being exploited while investigating a support case. The company also stated that they are currently working on developing an update for the operating system. Cisco has also provided workarounds and mitigations to avoid exploitation.

Distance Vector Multicast Routing Protocol

The company also urged companies to investigate their logs to see if they have been attacked using the vulnerability. Cisco published a security advisory stating,

“The vulnerability is due to insufficient queue management for Internet Group Management Protocol (IGMP) packets. An attacker could exploit this vulnerability by sending crafted IGMP traffic to an affected device. A successful exploit could allow the attacker to cause memory exhaustion, resulting in instability of other processes. These processes may include, but are not limited to, interior and exterior routing protocols.”

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Tags: Cisco Systems
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Erdem Yasar

Erdem Yasar

Erdem Yasar is a news editor at Cloud7 News. Erdem started his career by writing video game reviews in 2007 for PC World magazine while he was studying computer engineering. In the following years, he focused on software development with various programming languages. After his graduation, he continued to work as an editor for several major tech-related websites and magazines. During the 2010s, Erdem Yasar shifted his focus to cloud computing, hosting, and data centers as they were becoming more popular topics in the tech industry. Erdem Yasar also worked with various industry-leading tech companies as a content creator by writing blog posts and other articles. Prior to his role at Cloud7 News, Erdem was the managing editor of T3 Magazine.

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