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
apache CNA under the mitre root
CNA scorecard B 76/100 over 1236 records in the last 180 days details
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.
Show details on NVD website
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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": [
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            "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"
          }
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        "id": "CVE-2021-35516",
        "lastModified": "2024-11-21T06:12:25.430",
        "metrics": {
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                "baseScore": 5.0,
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        "published": "2021-07-13T08:15:07.137",
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            "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
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        ],
        "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"
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        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-11-06T20:29:12+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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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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    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.