GHSA-XQQC-C5GW-C5R5

Vulnerability from github – Published: 2022-12-14 21:35 – Updated: 2022-12-14 21:35
VLAI
Summary
Tendermint light client verification not taking into account chain ID
Details

Impact

Anyone using the tendermint-light-client and related packages to perform light client verification (e.g. IBC-rs, Hermes).

At present, the light client does not check that the chain IDs of the trusted and untrusted headers match, resulting in a possible attack vector where someone who finds a header from an untrusted chain that satisfies all other verification conditions (e.g. enough overlapping validator signatures) could fool a light client.

The attack vector is currently theoretical, and no proof-of-concept exists yet to exploit it on live networks.

Patches

Users of the light client-related crates can currently upgrade to v0.28.0.

Workarounds

None

References

Severity
5.4 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
Show details on source website
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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 0.27.0"
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "tendermint-light-client-verifier"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.28.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 0.27.0"
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "tendermint-light-client"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.28.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 0.27.0"
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "tendermint-light-client-js"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.28.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-23507"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-347"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-12-14T21:35:24Z",
    "nvd_published_at": "2022-12-15T19:15:00Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\n\nAnyone using the `tendermint-light-client` and related packages to perform light client verification (e.g. IBC-rs, Hermes).\n\nAt present, the light client does not check that the chain IDs of the trusted and untrusted headers match, resulting in a possible attack vector where someone who finds a header from an untrusted chain that satisfies all other verification conditions (e.g. enough overlapping validator signatures) could fool a light client.\n\nThe attack vector is currently theoretical, and no proof-of-concept exists yet to exploit it on live networks.\n\n### Patches\n\nUsers of the light client-related crates can currently upgrade to `v0.28.0`.\n\n### Workarounds\n\nNone\n\n### References\n\n- [Light Client specification](https://github.com/tendermint/tendermint/tree/main/spec/light-client)",
  "id": "GHSA-xqqc-c5gw-c5r5",
  "modified": "2022-12-14T21:35:24Z",
  "published": "2022-12-14T21:35:24Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/informalsystems/tendermint-rs/security/advisories/GHSA-xqqc-c5gw-c5r5"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-23507"
    },
    {
      "type": "WEB",
      "url": "https://github.com/informalsystems/tendermint-rs/commit/5c32f31b97ac3172775699fe0d4ba6003ca4fb18"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/informalsystems/tendermint-rs"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Tendermint light client verification not taking into account chain ID"
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.



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