Adversaries may forge credential materials that can be used to gain access to web applications or Internet services. Web applications and services (hosted in cloud SaaS environments or on-premise servers) often use session cookies, tokens, or other materials to authenticate and authorize user access.
Adversaries may generate these credential materials in order to gain access to web resources. This differs from Steal Web Session Cookie, Steal Application Access Token, and other similar behaviors in that the credentials are new and forged by the adversary, rather than stolen or intercepted from legitimate users.
The generation of web credentials often requires secret values, such as passwords, Private Keys, or other cryptographic seed values.[1] Adversaries may also forge tokens by taking advantage of features such as the AssumeRole and GetFederationToken APIs in AWS, which allow users to request temporary security credentials (i.e., Temporary Elevated Cloud Access), or the zmprov gdpak command in Zimbra, which generates a pre-authentication key that can be used to generate tokens for any user in the domain.[2],[3]
Once forged, adversaries may use these web credentials to access resources (ex: Use Alternate Authentication Material), which may bypass multi-factor and other authentication protection mechanisms.[4],[5],[6]
References
- Damian Hickey. (2017, January 28). AWS-ADFS-Credential-Generator. Retrieved September 27, 2024.
- AWS. (n.d.). Requesting temporary security credentials. Retrieved April 1, 2022.
- Zimbra. (2023, March 16). Preauth. Retrieved May 31, 2023.
- Rehberger, J. (2018, December). Pivot to the Cloud using Pass the Cookie. Retrieved April 5, 2019.
- Chen, Y., Hu, W., Xu, Z., et. al. (2019, January 31). Mac Malware Steals Cryptocurrency Exchanges’ Cookies. Retrieved October 14, 2019.
- MSRC. (2020, December 13). Customer Guidance on Recent Nation-State Cyber Attacks. Retrieved December 17, 2020.
Dílčí úkoly
| Název | Popis |
|---|---|
| SAML Tokens | An adversary may forge SAML tokens with any permissions claims and lifetimes if they possess a valid SAML token-signing certificate.[1] The default lifetime of a SAML token is one hour, but the validity period can be specified in the An adversary may utilize Private Keys to compromise an organization's token-signing certificate to create forged SAML tokens. If the adversary has sufficient permissions to establish a new federation trust with their own Active Directory Federation Services (AD FS) server, they may instead generate their own trusted token-signing certificate.[4] This differs from Steal Application Access Token and other similar behaviors in that the tokens are new and forged by the adversary, rather than stolen or intercepted from legitimate users. An adversary may gain administrative Entra ID privileges if a SAML token is forged which claims to represent a highly privileged account. This may lead to Use Alternate Authentication Material, which may bypass multi-factor and other authentication protection mechanisms.[4] References
|
| Web Cookies | Adversaries may forge web cookies that can be used to gain access to web applications or Internet services. Web applications and services (hosted in cloud SaaS environments or on-premise servers) often use session cookies to authenticate and authorize user access. Adversaries may generate these cookies in order to gain access to web resources. This differs from Steal Web Session Cookie and other similar behaviors in that the cookies are new and forged by the adversary, rather than stolen or intercepted from legitimate users. Most common web applications have standardized and documented cookie values that can be generated using provided tools or interfaces.[1] The generation of web cookies often requires secret values, such as passwords, Private Keys, or other cryptographic seed values. Once forged, adversaries may use these web cookies to access resources (Web Session Cookie), which may bypass multi-factor and other authentication protection mechanisms.[2],[1],[3] References
|
Propojené úkoly
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