What’s Vulnerable › Vulnerabilities

CVE-2018-0256

• Severity: medium (CVSS 5.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-04-19 · updated 2026-06-17
• Weakness: CWE-20

Description

A vulnerability in the peer-to-peer message processing functionality of Cisco Packet Data Network Gateway could allow an unauthenticated, remote attacker to cause the Session Manager (SESSMGR) process on an affected device to restart, resulting in a denial of service (DoS) condition. The vulnerability is due to incorrect validation of peer-to-peer packet headers. An attacker could exploit this vulnerability by sending a crafted peer-to-peer packet through an affected device. A successful exploit could allow the attacker to cause the SESSMGR process on the affected device to restart unexpectedly, which could briefly impact traffic while the SESSMGR process restarts and result in a DoS condition. Cisco Bug IDs: CSCvg88786.

Affected products

• Cisco ASR 5000 Series Aggregation Services Routers: 20.3.0.66671, p2p_2.16.879

References

• http://www.securityfocus.com/bid/103951
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180418-pdng
• http://www.securityfocus.com/bid/103951
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180418-pdng

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