cve-2026-84161

MEDIUM CVSS 4.9 fkie_nvd
Description

When an operator enables store.analysis_statistics_dir, a network client with PRODUCT_STORE permission for a product can call that product's storeAnalysisStatistics Thrift-over-HTTP method. CodeChecker 6.29.0 decodes the attacker-controlled Base64 string and passes the complete compressed input to one-shot zlib.decompress(). No maximum decompressed size is enforced. This gives a correctly authorized, non-superuser store account a high-ratio memory and persistent-disk amplification primitive. The complete output is first materialized as a Python bytes object and is then written to the configured statistics directory. A sufficiently scaled payload can exhaust the API worker or host memory and impair CodeChecker availability. The shipped value of store.analysis_statistics_dir is null, so the affected feature is disabled by default. The primary assessment does not rely on authentication being disabled. There is no authorization bypass and no path traversal in this report.

Timeline
Published
unknown
Last Modified
unknown
CVSS Details
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
Affected Products

No product information available.

Weaknesses (CWE)
CWE-409 CWE-770
CVSS metrics
Version Base Severity Vector Exploitability Impact Source
3.1 4.9 MEDIUM CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H 1.2 3.6 85b1779b-6ecd-4f52-bcc5-73eac4659dcf
NVD metadata
NVD status
Received
Source identifier
85b1779b-6ecd-4f52-bcc5-73eac4659dcf
References
Linked Vulnerabilities

No linked vulnerabilities found.

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "CodeChecker",
          "vendor": "Ericsson",
          "versions": [
            {
              "changes": [
                {
                  "at": "6.29.3",
                  "status": "unaffected"
                }
              ],
              "lessThan": "6.29.3",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "85b1779b-6ecd-4f52-bcc5-73eac4659dcf"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "When an operator enables store.analysis_statistics_dir, a network client with PRODUCT_STORE permission for a product can call that product's storeAnalysisStatistics Thrift-over-HTTP method. CodeChecker 6.29.0 decodes the attacker-controlled Base64 string and passes the complete compressed input to one-shot zlib.decompress(). No maximum decompressed size is enforced.\n\n\n\nThis gives a correctly authorized, non-superuser store account a high-ratio memory and persistent-disk amplification primitive. The complete output is first materialized as a Python bytes object and is then written to the configured statistics directory. A sufficiently scaled payload can exhaust the API worker or host memory and impair CodeChecker availability.\n\n\n\nThe shipped value of store.analysis_statistics_dir is null, so the affected feature is disabled by default. The primary assessment does not rely on authentication being disabled. There is no authorization bypass and no path traversal in this report."
    }
  ],
  "id": "CVE-2026-84161",
  "lastModified": "2026-11-06T11:17:17.190",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 4.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 3.6,
        "source": "85b1779b-6ecd-4f52-bcc5-73eac4659dcf",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-11-06T11:17:17.190",
  "references": [
    {
      "source": "85b1779b-6ecd-4f52-bcc5-73eac4659dcf",
      "url": "https://github.com/Ericsson/codechecker/security/advisories/GHSA-w57m-6g36-jjwv"
    }
  ],
  "sourceIdentifier": "85b1779b-6ecd-4f52-bcc5-73eac4659dcf",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-409"
        },
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ],
      "source": "85b1779b-6ecd-4f52-bcc5-73eac4659dcf",
      "type": "Secondary"
    }
  ]
}
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