CVE-2020-1921

2021-03-1015:50:30

CWE-121

facebook

www.cve.org

0.001 Low

EPSS

Percentile

44.3%

JSON

In the crypt function, we attempt to null terminate a buffer using the size of the input salt without validating that the offset is within the buffer. This issue affects HHVM versions prior to 4.56.3, all versions between 4.57.0 and 4.80.1, all versions between 4.81.0 and 4.93.1, and versions 4.94.0, 4.95.0, 4.96.0, 4.97.0, 4.98.0.

CNA Affected

[
  {
    "product": "HHVM",
    "vendor": "Facebook",
    "versions": [
      {
        "lessThan": "unspecified",
        "status": "unaffected",
        "version": "4.98.1",
        "versionType": "custom"
      },
      {
        "status": "affected",
        "version": "4.98.0"
      },
      {
        "lessThan": "unspecified",
        "status": "unaffected",
        "version": "4.97.1",
        "versionType": "custom"
      },
      {
        "status": "affected",
        "version": "4.97.0"
      },
      {
        "lessThan": "unspecified",
        "status": "unaffected",
        "version": "4.96.1",
        "versionType": "custom"
      },
      {
        "status": "affected",
        "version": "4.96.0"
      },
      {
        "lessThan": "unspecified",
        "status": "unaffected",
        "version": "4.95.1",
        "versionType": "custom"
      },
      {
        "status": "affected",
        "version": "4.95.0"
      },
      {
        "lessThan": "unspecified",
        "status": "unaffected",
        "version": "4.94.1",
        "versionType": "custom"
      },
      {
        "status": "affected",
        "version": "4.94.0"
      },
      {
        "lessThan": "unspecified",
        "status": "unaffected",
        "version": "4.93.2",
        "versionType": "custom"
      },
      {
        "lessThan": "unspecified",
        "status": "affected",
        "version": "4.81.0",
        "versionType": "custom"
      },
      {
        "lessThan": "unspecified",
        "status": "unaffected",
        "version": "4.80.2",
        "versionType": "custom"
      },
      {
        "lessThan": "unspecified",
        "status": "affected",
        "version": "4.57.0",
        "versionType": "custom"
      },
      {
        "lessThan": "unspecified",
        "status": "unaffected",
        "version": "4.56.3",
        "versionType": "custom"
      },
      {
        "lessThan": "4.56.3",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]