PYSEC-2026-1534

Vulnerability from pysec - Published: 2026-07-07 11:45 - Updated: 2026-07-07 11:45
VLAI
Details

Issue:

At ospd_common.c, on the osdp_reply_name function, any reply id between REPLY_ACK and REPLY_XRD is valid, but names array do not declare all of the range. On a case of an undefined reply id within the range, name will be null (name = names[reply_id - REPLY_ACK];). Null name will casue a crash on next line: if (name[0] == '\0') as null[0] is invalid.

Attack:

As this logic is not limited to a secure connection, attacker may trigger this vulnerability without any prior knowledge.

Impact

Denial of Service

Patch

The issue has been patched in 24409e98a260176765956ec766a04cb35984fab1

Severity
6.5 (Medium)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Impacted products
Name purl
libosdp pkg:pypi/libosdp
Aliases
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "libosdp",
        "purl": "pkg:pypi/libosdp"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-52296",
    "GHSA-7945-5mcv-f2pp"
  ],
  "details": "### Issue:\nAt ospd_common.c, on the osdp_reply_name function, any reply id between REPLY_ACK and REPLY_XRD is valid, but names array do not declare all of the range. On a case of an undefined reply id within the range, name will be null (`name = names[reply_id - REPLY_ACK];`). Null name will casue a crash on next line: `if (name[0] == \u0027\\0\u0027)` as null[0] is invalid.\n\n### Attack:\nAs this logic is not limited to a secure connection, attacker may trigger this vulnerability without any prior knowledge.\n\n### Impact\nDenial of Service\n\n### Patch\nThe issue has been patched in 24409e98a260176765956ec766a04cb35984fab1\n",
  "id": "PYSEC-2026-1534",
  "modified": "2026-07-07T11:45:34.729113Z",
  "published": "2026-07-07T11:45:34.729113Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/goToMain/libosdp/security/advisories/GHSA-7945-5mcv-f2pp"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-52296"
    },
    {
      "type": "WEB",
      "url": "https://github.com/goToMain/libosdp/commit/24409e98a260176765956ec766a04cb35984fab1"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/goToMain/libosdp"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/libosdp"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-7945-5mcv-f2pp"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "LibOSDP vulnerable to a null pointer deref in osdp_reply_name"
}



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