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CVE Record

CVE-2018-0229: A vulnerability in the implementation of Security Assertion Markup Language (SAML) Single Sign-On (SSO) aut...

A vulnerability in the implementation of Security Assertion Markup Language (SAML) Single Sign-On (SSO) authentication for Cisco AnyConnect Secure Mobility Client for Desktop Platforms, Cisco Adaptive Security Appliance (ASA) Software, and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to establish an authenticated AnyConnect session through an affected device running ASA or FTD Software. The authentication would need to be done by an unsuspecting third party, aka Session Fixation. The vulnerability exists because there is no mechanism for the ASA or FTD Software to detect that the authentication request originates from the AnyConnect client directly. An attacker could exploit this vulnerability by persuading a user to click a crafted link and authenticating using the company's Identity Provider (IdP). A successful exploit could allow the attacker to hijack a valid authentication token and use that to establish an authenticated AnyConnect session through an affected device running ASA or FTD Software. This vulnerability affects the Cisco AnyConnect Secure Mobility Client, and ASA Software and FTD Software configured for SAML 2.0-based SSO for AnyConnect Remote Access VPN that is running on the following Cisco products: 3000 Series Industrial Security Appliances (ISA), ASA 5500 Series Adaptive Security Appliances, ASA 5500-X Series Next-Generation Firewalls, ASA Services Module for Cisco Catalyst 6500 Series Switches and Cisco 7600 Series Routers, Adaptive Security Virtual Appliance (ASAv), Firepower 2100 Series Security Appliance, Firepower 4100 Series Security Appliance, Firepower 9300 ASA Security Module, FTD Virtual (FTDv). Cisco Bug IDs: CSCvg65072, CSCvh87448.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysis

Security readout for executives and security teams

This flaw lets an attacker abuse SAML login flow for Cisco AnyConnect VPN. If a user is persuaded to authenticate through a crafted link, the attacker may hijack the resulting authentication token and start a VPN session through affected ASA or FTD devices. Exposure is limited to Cisco ASA or FTD deployments using SAML 2.0-based SSO for AnyConnect Remote Access VPN, including listed ASA, ISA, ASAv, Firepower, and FTDv platforms. Prioritize review where AnyConnect VPN protects corporate access. The issue can turn a normal user login into an attacker-controlled VPN session, but evidence provided does not confirm active exploitation. Mitigation focus: Review Cisco advisory cisco-sa-20180418-asaanyconnect for affected and fixed releases.; Upgrade affected ASA, FTD, and AnyConnect components per Cisco guidance.; Inventory AnyConnect VPN profiles using SAML 2.0 SSO..

Prepared

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Potential ATT&CK relevance

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CVE-2018-0229 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/aCisco ASA Software, FTD Software, and AnyConnect Secure Mobility ClientCisco ASA Software, FTD Software, and AnyConnect Secure Mobility ClientListed
Weakness

CWE details

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Session Fixation

Session Fixation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

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