cvelistv5 - cve-2024-41948

CVE-2024-41948 (GCVE-0-2024-41948)

Vulnerability from cvelistv5

Published

2024-08-01 22:03

Modified

2024-08-07 14:59

Severity ?

3.0 (Low) - CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:N

CWE

CWE-1259 - Improper Restriction of Security Token Assignment

Summary

biscuit-java is the java implementation of Biscuit, an authentication and authorization token for microservices architectures. Third-party blocks can be generated without transferring the whole token to the third-party authority. Instead, a ThirdPartyBlock request can be sent, providing only the necessary info to generate a third-party block and to sign it, which includes the public key of the previous block (used in the signature) and the public keys part of the token symbol table (for public key interning in datalog expressions). A third-part block request forged by a malicious user can trick the third-party authority into generating datalog trusting the wrong keypair. This vulnerability is fixed in 4.0.0.

References

►

URL

Tags

security-advisories@github.com

https://github.com/biscuit-auth/biscuit-java/security/advisories/GHSA-5hcj-rwm6-xmw4

Third Party Advisory

Impacted products

	Vendor	Product	Version
	biscuit-auth	biscuit-java	Version: >= 3.0.0, < 4.0.0

Show details on NVD website

JSON

To clipboard

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fkie_cve-2024-41948

Vulnerability from fkie_nvd

Published

2024-08-01 22:15

Modified

2024-08-09 18:38

Severity ?

3.0 (Low) - CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:N
5.0 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N

Summary

References

▶	URL	Tags
	security-advisories@github.com	https://github.com/biscuit-auth/biscuit-java/security/advisories/GHSA-5hcj-rwm6-xmw4	Third Party Advisory

Impacted products

	Vendor	Product	Version
	biscuitsec	biscuit-java	*

JSON

To clipboard

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    {
      "nodes": [
        {
          "cpeMatch": [
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    }
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  "lastModified": "2024-08-09T18:38:47.533",
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ghsa-5hcj-rwm6-xmw4

Vulnerability from github

Published

2024-07-31 18:48

Modified

2024-11-18 16:26

Severity ?

3.0 (Low) - CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:N
5.1 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N

Summary

biscuit-java vulnerable to public key confusion in third party block

Details

Impact

Tokens with third-party blocks containing trusted annotations generated through a third party block request. Due to implementation issues in biscuit-java, third party block support in published versions is inoperating. Nevertheless, to synchronize with other implementations, we publish this advisory and the related fix.

Description

Third-party blocks can be generated without transferring the whole token to the third-party authority. Instead, a ThirdPartyBlock request can be sent, providing only the necessary info to generate a third-party block and to sign it:

the public key of the previous block (used in the signature) the public keys part of the token symbol table (for public key interning in datalog expressions) A third-part block request forged by a malicious user can trick the third-party authority into generating datalog trusting the wrong keypair.

Consider the following example (nominal case) * Authority A emits the following token: check if thirdparty("b") trusting ${pubkeyB} * The well-behaving holder then generates a third-party block request based on the token and sends it to third-party authority B * Third-party B generates the following third-party block thirdparty("b"); check if thirdparty("c") trusting ${pubkeyC} * The token holder now must obtain a third-party block from third party C to be able to use the token

Now, with a malicious user: * Authority A emits the following token: check if thirdparty("b") trusting ${pubkeyB} * The holder then attenuates the token with the following third party block thirdparty("c"), signed with a keypair pubkeyD, privkeyD) they generate * The holder then generates a third-party block request based on this token, but alter the ThirdPartyBlockRequest publicKeys field and replace pubkeyD with pubkeyC * Third-party B generates the following third-party block thirdparty("b"); check if thirdparty("c") trusting ${pubkeyC} * Due to the altered symbol table, the actual meaning of the block is thirdparty("b"); check if thirdparty("c") trusting ${pubkeyD} * The attacker can now use the token without obtaining a third-party block from C.

Patches

Has the problem been patched? What versions should users upgrade to?

Workarounds

Is there a way for users to fix or remediate the vulnerability without upgrading?

References

Are there any links users can visit to find out more?

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.biscuitsec:biscuit"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.0.0"
            },
            {
              "fixed": "4.0.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-41948"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1259"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-07-31T18:48:40Z",
    "nvd_published_at": "2024-08-01T22:15:28Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\nTokens with third-party blocks containing trusted annotations generated through a third party block request. Due to implementation issues in biscuit-java,  third party block support in published versions is inoperating. Nevertheless, to synchronize with other implementations, we publish this advisory and the related fix.\n\n### Description\nThird-party blocks can be generated without transferring the whole token to the third-party authority. Instead, a `ThirdPartyBlock` request can be sent, providing only the necessary info to generate a third-party block and to sign it:\n\nthe public key of the previous block (used in the signature)\nthe public keys part of the token symbol table (for public key interning in datalog expressions)\nA third-part block request forged by a malicious user can trick the third-party authority into generating datalog trusting the wrong keypair.\n\nConsider the following example (nominal case)\n* Authority A emits the following token: `check if thirdparty(\"b\") trusting ${pubkeyB}`\n* The well-behaving holder then generates a third-party block request based on the token and sends it to third-party authority B\n* Third-party B generates the following third-party block `thirdparty(\"b\"); check if thirdparty(\"c\") trusting ${pubkeyC}`\n* The token holder now must obtain a third-party block from third party C to be able to use the token\n\nNow, with a malicious user:\n* Authority A emits the following token: `check if thirdparty(\"b\") trusting ${pubkeyB}`\n* The holder then attenuates the token with the following third party block `thirdparty(\"c\")`, signed with a keypair pubkeyD, privkeyD) they generate\n* The holder then generates a third-party block request based on this token, but alter the `ThirdPartyBlockRequest` publicKeys field and replace pubkeyD with pubkeyC\n* Third-party B generates the following third-party block `thirdparty(\"b\"); check if thirdparty(\"c\") trusting ${pubkeyC}`\n* Due to the altered symbol table, the actual meaning of the block is `thirdparty(\"b\"); check if thirdparty(\"c\") trusting ${pubkeyD}`\n* The attacker can now use the token without obtaining a third-party block from C.\n\n### Patches\n_Has the problem been patched? What versions should users upgrade to?_\n\n### Workarounds\n_Is there a way for users to fix or remediate the vulnerability without upgrading?_\n\n### References\n_Are there any links users can visit to find out more?_\n\n",
  "id": "GHSA-5hcj-rwm6-xmw4",
  "modified": "2024-11-18T16:26:57Z",
  "published": "2024-07-31T18:48:40Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/biscuit-auth/biscuit-java/security/advisories/GHSA-5hcj-rwm6-xmw4"
    },
    {
      "type": "WEB",
      "url": "https://github.com/biscuit-auth/biscuit/security/advisories/GHSA-rgqv-mwc3-c78m"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-41948"
    },
    {
      "type": "WEB",
      "url": "https://github.com/biscuit-auth/biscuit-java/commit/2e05e7b3f8f2aae38f33294f19419e2d638cb564"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/biscuit-auth/biscuit-java"
    },
    {
      "type": "WEB",
      "url": "https://github.com/biscuit-auth/biscuit-java/releases/tag/4.0.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "biscuit-java vulnerable to public key confusion in third party block"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted

CVE-2024-41948 (GCVE-0-2024-41948)

Vulnerability from cvelistv5

fkie_cve-2024-41948

Vulnerability from fkie_nvd

ghsa-5hcj-rwm6-xmw4

Vulnerability from github

Impact

Description

Patches

Workarounds

References

Tags

Sightings

Nomenclature