CVE-2019-16778 Heap buffer overflow in `UnsortedSegmentSum` in TensorFlow

2019-12-1620:15:14

CWE-122

GitHub_M

www.cve.org

CVSS3

2.6

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L

AI Score

9.7

Confidence

High

EPSS

0.002

Percentile

53.7%

JSON

In TensorFlow before 1.15, a heap buffer overflow in UnsortedSegmentSum can be produced when the Index template argument is int32. In this case data_size and num_segments fields are truncated from int64 to int32 and can produce negative numbers, resulting in accessing out of bounds heap memory. This is unlikely to be exploitable and was detected and fixed internally in TensorFlow 1.15 and 2.0.

CNA Affected

[
  {
    "product": "tensorflow",
    "vendor": "tensorflow",
    "versions": [
      {
        "lessThan": "1.15",
        "status": "affected",
        "version": "< 1.15",
        "versionType": "custom"
      }
    ]
  }
]