ID CVE-2018-0476
Summary 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 SIP packets in transit while NAT is performed on an affected device. An unauthenticated, remote attacker could exploit this vulnerability by sending crafted SIP packets via UDP port 5060 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.
References
Vulnerable Configurations
  • cpe:2.3:o:cisco:ios_xe:15.5\(3\)s5.1:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:ios_xe:15.5\(3\)s5.1:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:15.5\(3\)s6.1:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:ios_xe:15.5\(3\)s6.1:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:16.6.2:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:ios_xe:16.6.2:*:*:*:*:*:*:*
CVSS
Base: 7.1 (as of 09-10-2019 - 23:32)
Impact:
Exploitability:
CWE NVD-CWE-noinfo
CAPEC
Access
VectorComplexityAuthentication
NETWORK MEDIUM NONE
Impact
ConfidentialityIntegrityAvailability
NONE NONE COMPLETE
cvss-vector via4 AV:N/AC:M/Au:N/C:N/I:N/A:C
refmap via4
bid 105419
cisco 20180926 Cisco IOS XE Software NAT Session Initiation Protocol Application Layer Gateway Denial of Service Vulnerability
sectrack
  • 1041734
  • 1041737
Last major update 09-10-2019 - 23:32
Published 05-10-2018 - 14:29
Last modified 09-10-2019 - 23:32
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