github - ghsa-rpc6-w47v-qqr6

GHSA-RPC6-W47V-QQR6

Vulnerability from github – Published: 2025-07-04 15:31 – Updated: 2025-07-04 15:31

Details

CHMLib through 2bef8d0, as used in SumatraPDF and other products, has a chm_lib.c _chm_decompress_block integer overflow. There is a resultant heap-based buffer overflow in _chm_fetch_bytes.

Severity ?

5.6 (Medium)


                  
                    CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L

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{
  "affected": [],
  "aliases": [
    "CVE-2025-48172"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-190"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-04T13:15:25Z",
    "severity": "MODERATE"
  },
  "details": "CHMLib through 2bef8d0, as used in SumatraPDF and other products, has a chm_lib.c _chm_decompress_block integer overflow. There is a resultant heap-based buffer overflow in _chm_fetch_bytes.",
  "id": "GHSA-rpc6-w47v-qqr6",
  "modified": "2025-07-04T15:31:08Z",
  "published": "2025-07-04T15:31:08Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-48172"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sumatrapdfreader/sumatrapdf/commit/08179946a745cf1605e4b9670942ec1a6e1f4c5d"
    },
    {
      "type": "WEB",
      "url": "https://drive.google.com/file/d/1XpulFyCGlq7Szzg5RsH-eRwZ6OyuSozl/view?usp=sharing"
    },
    {
      "type": "WEB",
      "url": "https://drive.google.com/file/d/1wq51px42eoJz2VQ1Qu9ObPVQVom9T9H_/view?usp=sharing"
    },
    {
      "type": "WEB",
      "url": "https://github.com/jedwing/CHMLib/blob/2bef8d063ec7d88a8de6fd9f0513ea42ac0fa21f/src/chm_lib.c#L1386"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-48172 (GCVE-0-2025-48172)

Vulnerability from cvelistv5 – Published: 2025-07-04 00:00 – Updated: 2025-07-08 14:29

Summary

CHMLib through 2bef8d0, as used in SumatraPDF and other products, has a chm_lib.c _chm_decompress_block integer overflow. There is a resultant heap-based buffer overflow in _chm_fetch_bytes.

Severity ?

5.6 (Medium)


                        
                          CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

mitre

References

URL

Tags

	https://drive.google.com/file/d/1XpulFyCGlq7Szzg5…
	https://drive.google.com/file/d/1wq51px42eoJz2VQ1…
	https://github.com/jedwing/CHMLib/blob/2bef8d063e…
	https://github.com/sumatrapdfreader/sumatrapdf/co…

Impacted products

	Vendor	Product	Version
	CHMLib	CHMLib	Affected: 0 , ≤ 2bef8d063ec7d88a8de6fd9f0513ea42ac0fa21f (git)

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  "containers": {
    "adp": [
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        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-48172",
                "options": [
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                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-07-08T14:10:02.999001Z",
                "version": "2.0.3"
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        ],
        "title": "CISA ADP Vulnrichment"
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          "vendor": "CHMLib",
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              "version": "0",
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            }
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      "cpeApplicability": [
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      "metrics": [
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          "cvssV3_1": {
            "baseScore": 5.6,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L",
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    "datePublished": "2025-07-04T00:00:00.000Z",
    "dateReserved": "2025-05-16T00:00:00.000Z",
    "dateUpdated": "2025-07-08T14:29:58.784Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

Action not permitted

GHSA-RPC6-W47V-QQR6

CVE-2025-48172 (GCVE-0-2025-48172)

Tags

Sightings

Nomenclature