CVE-2017-12933 (GCVE-0-2017-12933)

Vulnerability from cvelistv5 – Published: 2017-08-18 03:00 – Updated: 2024-08-05 18:51
VLAI
Summary
The finish_nested_data function in ext/standard/var_unserializer.re in PHP before 5.6.31, 7.0.x before 7.0.21, and 7.1.x before 7.1.7 is prone to a buffer over-read while unserializing untrusted data. Exploitation of this issue can have an unspecified impact on the integrity of PHP.
Severity
9.8 (Critical)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • n/a
Assigner
References
URL Tags
https://access.redhat.com/errata/RHSA-2018:1296 vendor-advisoryx_refsource_REDHAT
http://php.net/ChangeLog-5.php x_refsource_CONFIRM
https://bugs.php.net/bug.php?id=74111 x_refsource_CONFIRM
https://www.debian.org/security/2018/dsa-4081 vendor-advisoryx_refsource_DEBIAN
https://www.debian.org/security/2018/dsa-4080 vendor-advisoryx_refsource_DEBIAN
https://usn.ubuntu.com/3566-1/ vendor-advisoryx_refsource_UBUNTU
http://php.net/ChangeLog-7.php x_refsource_CONFIRM
http://www.securityfocus.com/bid/99490 vdb-entryx_refsource_BID
https://usn.ubuntu.com/3566-2/ vendor-advisoryx_refsource_UBUNTU
Date Public
2017-08-17 00:00
Show details on NVD website
To clipboard 

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          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://usn.ubuntu.com/3566-1/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://usn.ubuntu.com/3566-2/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://www.debian.org/security/2018/dsa-4080"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://www.debian.org/security/2018/dsa-4081"
          }
        ],
        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-125"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-28T11:11:06+00:00",
      "cve": "CVE-2017-12933",
      "id": "CVE-2017-12933",
      "initial_release_date": "2017-02-16T00:00:00+00:00",
      "product_status:fixed": "254",
      "product_status:known_affected": "86",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "php: buffer over-read in finish_nested_data function",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2017/cve-2017-12933.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.



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.