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...

The vulnerability of the CLI component of the Cisco IOS XR operating system allows a perpetrator to execute arbitrary commands with root privileges or gain increased privileges.

The vulnerability of the CLI component of the Cisco IOS XR operating system exists due to the lack of measures taken to neutralize the special elements used in the operating system’s commands. Exploiting this vulnerability can allow an attacker to enhance their privileges or execute arbitrary...

The vulnerability of the CLI component of the Cisco IOS XR operating system, which allows a hacker to elevate their privileges to root.

The vulnerability of the CLI component of the Cisco IOS XR operating system exists due to insufficient validation of input data. Exploiting this vulnerability can allow an attacker to elevate their privileges to root...

The vulnerability of the CLI component of the Cisco IOS XR operating system, allowing a hacker to execute arbitrary commands

The vulnerability of the CLI component of the Cisco IOS XR operating system exists due to the lack of measures taken to neutralize the special elements used in the operating system’s commands. Exploiting this vulnerability can allow an attacker to execute arbitrary commands...

The vulnerability of the Cisco IOS XR operating system, related to the lack of protection for service data, allows attackers to compromise the confidentiality of the protected information.

The vulnerability of the Cisco IOS XR operating system is related to the lack of protection for service data. Exploiting this vulnerability can allow an attacker to compromise the confidentiality of the protected information by using a specific command...

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...

The vulnerability of the DHCP server service in the Cisco IOS XR operating system allows a attacker to cause a failure in the dhcpd process.

The vulnerability of the Cisco IOS XR operating system’s DHCP server is related to errors in processing DHCPv4 messages. Exploiting this vulnerability can allow a malicious actor to cause failures in the dhcpd process from a remote location...

The vulnerability of the SSH server on the Cisco IOS XR operating system allows a hacker to read and rewrite any files they choose.

The vulnerability of the SSH server on the Cisco IOS XR operating system is related to insufficient cleaning of special elements in the output data used by the incoming component. Exploiting this vulnerability allows a remote attacker to read and rewrite any files as desired...

Cisco IOS XR Software Border Gateway Protocol Resource Public Key Infrastructure DoS (cisco-sa-xrbgp-rpki-dos-gvmjqxbk)

According to its self-reported version, Cisco IOS XR is affected by a denial of service DoS vulnerability in the implementation of the Resource Public Key Infrastructure RPKI feature due to incorrect handling of a specific RPKI to Router RTR Protocol packet. An unauthenticated, remote attacker ca...

Cisco IOS XR Software for 8000 Network Convergence System 540 Series Routers Image Verification (cisco-sa-lnt-QN9mCzwn)

According to its self-reported version, Cisco IOS XR is affected by multiple vulnerabilities in image verification checks that enables an authenticated, local attacker to execute arbitrary code on the underlying operating system. Note that Nessus has not tested for this issue but has instead reli...

Cisco IOS XR Software IP Service Level Agreements Two Way Active Measurement Protocol DoS (cisco-sa-ipsla-ZA3SRrpP)

According to its self-reported version, Cisco IOS XR is affected by a vulnerability in the IP Service Level Agreements IP SLA responder and Two-Way Active Measurement Protocol TWAMP features that allows an unauthenticated, remote attacker to cause device packet memory to become exhausted or cause...

Cisco IOS XR Software Command Injection (cisco-sa-iosxr-cmd-inj-wbZKvPxc)

According to its self-reported version, Cisco IOS XR is affected by multiple command injection vulnerabilities that allow an authenticated, local attacker to gain access to the underlying root shell of an affected device and execute arbitrary commands with root privileges. Note that Nessus has no...

Vulnerabilities fixed in Cisco IOS XR

Vulnerabilities have been fixed in Cisco IOS XR. The vulnerabilities allow a malicious party to carry out attacks execute attacks that result in the following categories of damage: Denial-of-Service DoS. Circumvention of security measure Access to sensitive data Increased user privileges Cisco ha...

Cisco IOS XR Software DHCP Version 4 Server DoS (cisco-sa-iosxr-dhcp-dos-pjPVReLU)

According to its self-reported version, Cisco IOS XR is affected by a vulnerability in the DHCP version 4 DHCPv4 server feature that allows an unauthenticated, remote attacker to trigger a crash of the dhcpd process, resulting in a denial of service DoS condition. This vulnerability exists becaus...

Cisco IOS XR Software Arbitrary File Read and Write (cisco-sa-iosxr-scp-inject-QwZOCv2)

According to its self-reported version, Cisco IOS XR is affected by an arbitrary file read and write vulnerability in its SSH server process due to insufficient input validation of user supplied input. An authenticated, remote attacker can exploit this, by specifying specific SCP parameters when...

Cisco IOS XR Software Authenticated User Privilege Escalation (cisco-sa-iosxr-privescal-dZYMrKf)

According to its self-reported version, Cisco IOS XR is affected by multiple privilege escalation vulnerabilities due to insufficient validation of user input. An authenticated, local attacker can exploit these to gain root access to the system. Please see the included Cisco BIDs and Cisco Securi...

Cisco IOS XR Software Unauthorized Information Disclosure (cisco-sa-iosxr-infodisc-CjLdGMc5)

According to its self-reported version, Cisco IOS XR is affected by an information disclosure vulnerability that allows an authenticated, local attacker to view more information than their privileges allow. This vulnerability is due to insufficient application of restrictions during the execution...

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...