CVE-2023-20135

Cisco IOS XR Software image verification checks contain a TOCTOU race condition during ISO image install queries, enabling an authenticated, local attacker to execute arbitrary code on the device. Affected component: image verification logic in IOS XR. Root cause: TOCTOU between ISO image modific...

Cisco IOS XR Software Model-Driven Programmability Behavior with AAA Authorization

Cisco IOS XR Software supports a programmatic way of configuring and collecting operational data on a network device using data models. Data models provide access to the capabilities of the devices in a network using NETCONF or gRPC. According to Cisco IOS XR Software configuration guides, if...

CVE-2023-20049

CVE-2023-20049 affects Cisco IOS XR Software running on ASR 9000 Series routers (including ASR 9902/9903) where the BFD hardware offload is enabled. The root cause is incorrect handling of malformed IPv4 BFD packets received on line cards, which can cause line-card exceptions or a hard reset, lea...

Design/Logic Flaw

A vulnerability in the health check RPM of Cisco IOS XR Software could allow an unauthenticated, remote attacker to access the Redis instance that is running within the NOSi container. This vulnerability exists because the health check RPM opens TCP port 6379 by default upon activation. An attack...

CVE-2022-20821 Cisco IOS XR Software Health Check Open Port Vulnerability

A vulnerability in the health check RPM of Cisco IOS XR Software could allow an unauthenticated, remote attacker to access the Redis instance that is running within the NOSi container. This vulnerability exists because the health check RPM opens TCP port 6379 by default upon activation. An attack...

CVE-2022-20821

Cisco IOS XR Software health check RPM opens port 6379 by default, exposing the Redis instance inside the NOSi container to unauthenticated remote access. This could allow writing to the Redis in-memory DB, writing arbitrary files to the container filesystem, and retrieving Redis data. The vulner...

CVE-2022-20821 Cisco IOS XR Software Health Check Open Port Vulnerability

A vulnerability in the health check RPM of Cisco IOS XR Software could allow an unauthenticated, remote attacker to access the Redis instance that is running within the NOSi container. This vulnerability exists because the health check RPM opens TCP port 6379 by default upon activation. An attack...

Cisco Issues Patch for New IOS XR Zero-Day Vulnerability Exploited in the Wild

Cisco on Friday rolled out fixes for a medium-severity vulnerability affecting IOS XR Software that it said has been exploited in real-world attacks. Tracked as CVE-2022-20821 CVSS score: 6.5, the issue relates to an open port vulnerability that could be abused by an unauthenticated, remote...

Cisco Releases Security Patches for TelePresence, RoomOS and Umbrella VA

Networking equipment maker Cisco has released security updates to address three high-severity vulnerabilities in its products that could be exploited to cause a denial-of-service DoS condition and take control of affected systems. The first of the three flaws, CVE-2022-20783 CVSS score: 7.5,...

Race condition

A vulnerability in the implementation of the Border Gateway Protocol BGP Ethernet VPN EVPN functionality in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service DoS condition. This vulnerability is due to the incorrect processing of a BGP update messa...

Cisco IOS XR Software Border Gateway Protocol DoS (cisco-sa-20090818-bgp)

According to its self-reported version, Cisco IOS XR Software with BGP enabled is affected by the following vulnerabilities: - Cisco IOS XR 3.8.1 and earlier allows remote attackers to cause a denial of service process crash via a long BGP UPDATE message, as demonstrated by a message with many AS...

CVE-2021-34714

CVE-2021-34714 affects Cisco FXOS, IOS, IOS XE/XR, and NX-OS UDLD implementations. The root cause is improper input validation of UDLD packets, enabling an unauthenticated, adjacent attacker to trigger a device reload and DoS; on IOS XR the impact is limited to reloading the UDLD process. The vul...

PT-2021-4497 · Cisco · Cisco Fxos +5

Name of the Vulnerable Software and Affected Versions: Cisco FXOS Software affected versions not specified Cisco IOS Software affected versions not specified Cisco IOS XE Software affected versions not specified Cisco IOS XR Software affected versions not specified Cisco NX-OS Software affected...

CVE-2021-34771

A vulnerability in the Cisco IOS XR Software CLI could allow an authenticated, local attacker to view more information than their privileges allow. This vulnerability is due to insufficient application of restrictions during the execution of a specific command. An attacker could exploit this...

CVE-2021-34771

A vulnerability in the Cisco IOS XR Software CLI could allow an authenticated, local attacker to view more information than their privileges allow. This vulnerability is due to insufficient application of restrictions during the execution of a specific command. An attacker could exploit this...

CVE-2021-34722

Multiple vulnerabilities in the CLI of Cisco IOS XR Software could allow an authenticated, local attacker to gain access to the underlying root shell of an affected device and execute arbitrary commands with root privileges. For more information about these vulnerabilities, see the Details sectio...

CVE-2021-34737

A vulnerability in the DHCP version 4 DHCPv4 server feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to trigger a crash of the dhcpd process, resulting in a denial of service DoS condition. This vulnerability exists because certain DHCPv4 messages are improperly...

CVE-2021-34721

Multiple vulnerabilities in the CLI of Cisco IOS XR Software could allow an authenticated, local attacker to gain access to the underlying root shell of an affected device and execute arbitrary commands with root privileges. For more information about these vulnerabilities, see the Details sectio...

CVE-2021-34709

Multiple vulnerabilities in image verification checks of Cisco Network Convergence System NCS 540 Series Routers, only when running Cisco IOS XR NCS540L software images, and Cisco IOS XR Software for Cisco 8000 Series Routers could allow an authenticated, local attacker to execute arbitrary code ...

Information disclosure

Multiple vulnerabilities in the CLI of Cisco IOS XR Software could allow an authenticated, local attacker to gain access to the underlying root shell of an affected device and execute arbitrary commands with root privileges. For more information about these vulnerabilities, see the Details sectio...