Vulnerability-Lookup

GHSA-M4RR-RF2F-G267

Vulnerability from github – Published: 2026-08-21 00:31 – Updated: 2026-08-21 00:31

Details

Path traversal in apport-unpack in Canonical Apport before 2.36.0, 2.34.2, and 2.28.4 on Linux allows an attacker to create or overwrite arbitrary files with the privileges of the executing user via an attacker controlled key names in crash report files.

Severity

6.7 (Medium)


                  
                    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-77113"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-23"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-20T23:16:28Z",
    "severity": "MODERATE"
  },
  "details": "Path traversal in apport-unpack in Canonical Apport before\u00a02.36.0,\u00a02.34.2, and\u00a02.28.4\u00a0on Linux allows an attacker to create or overwrite arbitrary files with the privileges of the executing user via an attacker controlled key names in crash report files.",
  "id": "GHSA-m4rr-rf2f-g267",
  "modified": "2026-08-21T00:31:24Z",
  "published": "2026-08-21T00:31:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-77113"
    },
    {
      "type": "WEB",
      "url": "https://github.com/canonical/apport/pull/646"
    },
    {
      "type": "WEB",
      "url": "https://launchpad.net/bugs/2161697"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-77113 (GCVE-0-2026-77113)

Vulnerability from cvelistv5 – Published: 2026-08-20 22:32 – Updated: 2026-08-20 22:32

Title

Path Traversal Vulnerability in apport-unpack

Summary

Severity

6.7 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

CWE

CWE-23 - Relative path traversal

Assigner

canonical mitre root

References

2 references

URL	Tags
https://launchpad.net/bugs/2161697	issue-trackingvendor-advisory
https://github.com/canonical/apport/pull/646	patch

Impacted products

1 product

Vendor	Product	Version
Canonical	Apport	Affected: 0 , < 2.36.0 (semver) Affected: 0 , < 2.34.2 (semver) Affected: 0 , < 2.28.4 (semver) cpe:2.3:a:canonical:apport:::linux:::::* cpe:2.3:a:canonical:apport:::linux:::::* cpe:2.3:a:canonical:apport:::linux:::::*

Credits

Sakib Sarkar (0xROI)

Show details on NVD website

JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageName": "apport-unpack",
          "platforms": [
            "Linux"
          ],
          "product": "Apport",
          "programFiles": [
            "problem_report.py"
          ],
          "repo": "https://github.com/canonical/apport",
          "vendor": "Canonical",
          "versions": [
            {
              "lessThan": "2.36.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "2.34.2",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "2.28.4",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:canonical:apport:*:*:linux:*:*:*:*:*",
                  "versionEndExcluding": "2.36.0",
                  "versionStartIncluding": "0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:canonical:apport:*:*:linux:*:*:*:*:*",
                  "versionEndExcluding": "2.34.2",
                  "versionStartIncluding": "0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:canonical:apport:*:*:linux:*:*:*:*:*",
                  "versionEndExcluding": "2.28.4",
                  "versionStartIncluding": "0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
          "operator": "OR"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Sakib Sarkar (0xROI)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Path traversal in apport-unpack in Canonical Apport before\u00a02.36.0,\u00a02.34.2, and\u00a02.28.4\u00a0on Linux allows an attacker to create or overwrite arbitrary files with the privileges of the executing user via an attacker controlled key names in crash report files."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-126",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-126 Path Traversal"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 6.7,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "ACTIVE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-23",
              "description": "CWE-23 Relative path traversal",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-20T22:32:51.447Z",
        "orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
        "shortName": "canonical"
      },
      "references": [
        {
          "tags": [
            "issue-tracking",
            "vendor-advisory"
          ],
          "url": "https://launchpad.net/bugs/2161697"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/canonical/apport/pull/646"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Path Traversal Vulnerability in apport-unpack",
      "x_generator": {
        "engine": "cvelib 1.8.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
    "assignerShortName": "canonical",
    "cveId": "CVE-2026-77113",
    "datePublished": "2026-08-20T22:32:51.447Z",
    "dateReserved": "2026-08-20T11:53:23.292Z",
    "dateUpdated": "2026-08-20T22:32:51.447Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

GHSA-M4RR-RF2F-G267

CVE-2026-77113 (GCVE-0-2026-77113)

Tags

Sightings

Nomenclature