CVE-2024-8158 (GCVE-0-2024-8158)

Vulnerability from cvelistv5 – Published: 2024-08-25 21:31 – Updated: 2024-08-26 15:22
VLAI?
Summary
A bug in the 9p authentication implementation within lib9p allows an attacker with an existing valid user within the configured auth server to impersonate any other valid filesystem user. This is due to lib9p not properly verifying that the uname given in the Tauth and Tattach 9p messages matches the client UID returned from the factotum authentication handshake. The only filesystem making use of these functions within the base 9front systems is the experimental hjfs disk filesystem, other disk filesystems (cwfs and gefs) are not affected by this bug. This bug was inherited from Plan 9 and is present in all versions of 9front and is remedied fully in commit 9645ae07eb66a59015e3e118d0024790c37400da.
Severity ?
8.8 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/AU:N/V:C/RE:L/U:Red
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
9front 9front Affected: 0 , < 9645ae07eb66a59015e3e118d0024790c37400da (Commit Hash)
Create a notification for this product.
Credits
humm Jacob Moody cinap_lenrek
Show details on NVD website
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Make and install the kernel to include the patched hjfs within the kernel\u0027s paqfs.\u003cbr\u003e\u003c/div\u003e\", \"base64\": false}]}], \"datePublic\": \"2024-08-24T21:58:00.000Z\", \"references\": [{\"url\": \"https://git.9front.org/plan9front/plan9front/07aa9bfeef55ca987d411115adcfbbd4390ecf34/commit.html\", \"tags\": [\"patch\"]}], \"x_generator\": {\"engine\": \"Vulnogram 0.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"A bug in the 9p authentication implementation within lib9p allows an attacker with an existing valid user within the configured auth server to impersonate any other valid filesystem user.\\n\\nThis is due to lib9p not properly verifying that the uname given in the Tauth and Tattach 9p messages matches the client UID returned from the factotum authentication handshake.\\n\\n\\nThe only filesystem making use of these functions within the base 9front systems is the experimental hjfs disk filesystem, other disk filesystems (cwfs and gefs) are not affected by this bug.\\n\\nThis bug was inherited from Plan 9 and is present in all versions of 9front and is remedied fully in commit 9645ae07eb66a59015e3e118d0024790c37400da.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cdiv\u003eA bug in the 9p authentication implementation within lib9p allows an attacker with an existing valid user within the configured auth server to impersonate any other valid filesystem user.\u003c/div\u003e\u003cdiv\u003eThis is due to lib9p not properly verifying that the uname given in the Tauth and Tattach 9p messages matches the client UID returned from the factotum authentication handshake.\u003cbr\u003e\u003c/div\u003e\u003cdiv\u003eThe only filesystem making use of these functions within the base 9front systems is the experimental hjfs disk filesystem, other disk filesystems (cwfs and gefs) are not affected by this bug.\u003c/div\u003e\u003cdiv\u003eThis bug was inherited from Plan 9 and is present in all versions of 9front and is remedied fully in commit 9645ae07eb66a59015e3e118d0024790c37400da.\u003cbr\u003e\u003c/div\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-639\", \"description\": \"CWE-639 Authorization Bypass Through User-Controlled Key\"}]}], \"providerMetadata\": {\"orgId\": \"1d66c9f9-fff2-411a-aa19-ca6312fa25e9\", \"shortName\": \"9front\", \"dateUpdated\": \"2024-08-25T21:31:08.246Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-8158\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-08-26T15:22:18.885Z\", \"dateReserved\": \"2024-08-25T21:25:59.746Z\", \"assignerOrgId\": \"1d66c9f9-fff2-411a-aa19-ca6312fa25e9\", \"datePublished\": \"2024-08-25T21:31:08.246Z\", \"assignerShortName\": \"9front\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.