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    CVE-2019-12646

    A vulnerability in the Network Address Translation (NAT) Session Initiation Protocol (SIP) Application Layer Gateway (ALG) of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to improper processing of transient SIP packets on which NAT is performed on an affected device. An attacker could exploit this vulnerability by using UDP port 5060 to send crafted SIP packets through an affected device that is performing NAT for SIP packets. A successful exploit could allow an attacker to cause the device to reload, resulting in a denial of service (DoS) condition.

    Published:Sep 25, 2019
    Last Modified:Nov 21, 2024
    EPS:Sep 25, 2019
    EPSS Score:0.01156
    CVSS Score:7.5

    Affected Products

    Vendor
    Cisco
    Product
    1100-4p
    Vendor
    Cisco
    Product
    1100-8p
    Vendor
    Cisco
    Product
    1101-4p
    Vendor
    Cisco
    Product
    1109-2p
    Vendor
    Cisco
    Product
    1109-4p
    Vendor
    Cisco
    Product
    1111x-8p
    Vendor
    Cisco
    Product
    4221 Integrated Services Router
    Vendor
    Cisco
    Product
    4331 Integrated Services Router
    Vendor
    Cisco
    Product
    Csr 1000v
    Vendor
    Cisco
    Product
    Encs 5100
    Vendor
    Cisco
    Product
    Encs 5400
    Vendor
    Cisco
    Product
    Ios Xe
    Vendor
    Cisco
    Product
    Isrv

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-665 Improper Initialization

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High