{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-40843",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-28T19:30:15.826239Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-28T19:30:25.737Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Linux"
          ],
          "product": "CodeChecker",
          "vendor": "Ericsson",
          "versions": [
            {
              "lessThanOrEqual": "6.26.1",
              "status": "affected",
              "version": "0",
              "versionType": "python"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eCodeChecker is an analyzer tooling, defect database and viewer extension for the Clang Static Analyzer and Clang Tidy. \u003c/span\u003e\u003cbr\u003e\u003cp\u003e\n\n\u003c/p\u003e\u003cp\u003eCodeChecker versions up to 6.26.1 contain a buffer overflow vulnerability in the internal \u003ccode\u003eldlogger\u003c/code\u003e\u0026nbsp;library, which is executed by the \u003ccode\u003eCodeChecker log\u003c/code\u003e\u0026nbsp;command.\u003c/p\u003e\n\n\u003cp\u003e\u003c/p\u003e\u003cp\u003eThis issue affects CodeChecker: through 6.26.1.\u003c/p\u003e"
            }
          ],
          "value": "CodeChecker is an analyzer tooling, defect database and viewer extension for the Clang Static Analyzer and Clang Tidy. \n\n\n\n\nCodeChecker versions up to 6.26.1 contain a buffer overflow vulnerability in the internal ldlogger\u00a0library, which is executed by the CodeChecker log\u00a0command.\n\n\n\n\n\nThis issue affects CodeChecker: through 6.26.1."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-100",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-100 Overflow Buffers"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "LOW",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-121",
              "description": "CWE-121 Stack based buffer overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-28T18:49:49.516Z",
        "orgId": "85b1779b-6ecd-4f52-bcc5-73eac4659dcf",
        "shortName": "ERIC"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://github.com/Ericsson/codechecker/security/advisories/GHSA-5xf2-f6ch-6p8r"
        }
      ],
      "source": {
        "discovery": "INTERNAL"
      },
      "tags": [
        "x_open-source"
      ],
      "title": "Buffer overflow in CodeChecker log command",
      "x_generator": {
        "engine": "Vulnogram 0.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "85b1779b-6ecd-4f52-bcc5-73eac4659dcf",
    "assignerShortName": "ERIC",
    "cveId": "CVE-2025-40843",
    "datePublished": "2025-10-28T18:49:49.516Z",
    "dateReserved": "2025-04-16T08:59:01.744Z",
    "dateUpdated": "2025-10-28T19:30:25.737Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 6.26.1"
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "codechecker"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.26.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-40843"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-121"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-09-22T18:04:20Z",
    "nvd_published_at": "2025-10-28T19:15:41Z",
    "severity": "MODERATE"
  },
  "details": "### Summary\nCodeChecker versions up to 6.26.1 contain a buffer overflow vulnerability in the internal `ldlogger` library, which is executed by the `CodeChecker log` command.\n\n### Details\nUnsafe usage of `strcpy()` function in the internal `ldlogger` library allows attackers to trigger a buffer overflow by supplying crafted inputs from the command line. Specifically, the destination buffer is stack-allocated with a fixed size of 4096 bytes, while `strcpy()` is called without any length checks, enabling an attacker to overrun the buffer.\n\n### PoC\nExample script is included below to illustrate how this vulnerability can be exploited.\n```bash\n#!/bin/bash\n\nexport CC_LOGGER_DEF_DIRS=1; \npayload=\u0027\u0027; for i in $(seq 1 4090); do payload+=\u0027A\u0027; done\n\nCodeChecker log -b \"/very/long/path/to/$payload/gcc a.c\" -o compilation.json\n```\n\n### Impact\nAny environment where the vulnerable `CodeChecker log` command is executed with untrusted user input is affected by this vulnerability.",
  "id": "GHSA-5xf2-f6ch-6p8r",
  "modified": "2025-10-29T14:48:34Z",
  "published": "2025-09-22T18:04:20Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Ericsson/codechecker/security/advisories/GHSA-5xf2-f6ch-6p8r"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40843"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Ericsson/codechecker/commit/4122eb1b43d00c880e4f0747d2ca0a674feb7a50"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/Ericsson/codechecker"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "CodeChecker has a buffer overflow in the log command"
}