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CVE-2021-35516 (GCVE-0-2021-35516)

Vulnerability from cvelistv5 – Published: 2021-07-13 07:15 – Updated: 2024-08-04 00:40
VLAI
Title
Apache Commons Compress 1.6 to 1.20 denial of service vulnerability
Summary
When reading a specially crafted 7Z archive, Compress can be made to allocate large amounts of memory that finally leads to an out of memory error even for very small inputs. This could be used to mount a denial of service attack against services that use Compress' sevenz package.
Severity
No CVSS data available.
CWE
  • CWE-130 - Improper Handling of Length Parameter Inconsistency
Assigner
References
Impacted products
Vendor Product Version CPE status
Apache Software Foundation Apache Commons Compress Affected: 1.6 , < Apache Commons Compress* (custom)
guessed Create a notification for this product.
Credits
This issue was first reported to the project's issue tracker as COMPRESS-542 by Robin Schimpf. Later OSS Fuzz detected ways to exploit this issue which managed to escape the initial attempt to fix it.
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              "name": "[skywalking-notifications] 20210802 [GitHub] [skywalking] codecov[bot] commented on pull request #7400: Fix CVE-2021-35515, CVE-2021-35516, CVE-2021-35517, CVE-2021-36090",
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          "discovery": "UNKNOWN"
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            "lang": "en",
            "value": "Commons Compress users should upgrade to 1.21 or later.\n\nWith Compress 1.19 we introduced a feature that tries to recover broken 7z archives, which makes it far easier to exploit this weakness. As a result we have disabled the recovery code by default and users need to enable it explicitly. In addition users are able to control the amount of memory SevenZFile may use and we strongly recommend using this feature when trying to recover broken archives."
          }
        ]
      }
    }
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    "dateReserved": "2021-06-27T00:00:00.000Z",
    "dateUpdated": "2024-08-04T00:40:46.628Z",
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        "descriptions": [
          {
            "lang": "en",
            "value": "When reading a specially crafted 7Z archive, Compress can be made to allocate large amounts of memory that finally leads to an out of memory error even for very small inputs. This could be used to mount a denial of service attack against services that use Compress\u0027 sevenz package."
          },
          {
            "lang": "es",
            "value": "Al leer un archivo 7Z especialmente dise\u00f1ado, Compress puede asignar grandes cantidades de memoria que finalmente conllevan a un error de falta de memoria incluso para entradas muy peque\u00f1as. Esto podr\u00eda ser usado para montar un ataque de denegaci\u00f3n de servicio contra los servicios que usan el paquete sevenz de Compress"
          }
        ],
        "id": "CVE-2021-35516",
        "lastModified": "2024-11-21T06:12:25.430",
        "metrics": {
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                "baseScore": 5.0,
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                "scope": "UNCHANGED",
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        "published": "2021-07-13T08:15:07.137",
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          },
          {
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              "Third Party Advisory"
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            "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
          }
        ],
        "sourceIdentifier": "security@apache.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-130"
              }
            ],
            "source": "security@apache.org",
            "type": "Secondary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-770"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-05-14T18:55:55+00:00",
      "cve": "CVE-2021-35516",
      "id": "CVE-2021-35516",
      "initial_release_date": "2021-07-13T00:00:00+00:00",
      "product_status:fixed": "4",
      "product_status:known_affected": "12",
      "product_status:known_not_affected": "41",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "apache-commons-compress: excessive memory allocation when reading a specially crafted 7Z archive",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-35516.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.