Vulnerability Name:

CVE-2021-37643 (CCN-207348)

Assigned:2021-08-11
Published:2021-08-11
Updated:2021-08-18
Summary:TensorFlow is an end-to-end open source platform for machine learning. If a user does not provide a valid padding value to `tf.raw_ops.MatrixDiagPartOp`, then the code triggers a null pointer dereference (if input is empty) or produces invalid behavior, ignoring all values after the first. The [implementation](https://github.com/tensorflow/tensorflow/blob/8d72537c6abf5a44103b57b9c2e22c14f5f49698/tensorflow/core/kernels/linalg/matrix_diag_op.cc#L89) reads the first value from a tensor buffer without first checking that the tensor has values to read from. We have patched the issue in GitHub commit 482da92095c4d48f8784b1f00dda4f81c28d2988. The fix will be included in TensorFlow 2.6.0. We will also cherrypick this commit on TensorFlow 2.5.1, TensorFlow 2.4.3, and TensorFlow 2.3.4, as these are also affected and still in supported range.
CVSS v3 Severity:7.1 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H)
6.2 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): High
Availibility (A): High
6.2 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
5.4 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:3.6 Low (CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): Partial
4.9 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-476
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2021-37643

Source: XF
Type: UNKNOWN
tensorflow-cve202137643-dos(207348)

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/tensorflow/tensorflow/commit/482da92095c4d48f8784b1f00dda4f81c28d2988

Source: CCN
Type: TensorFlow GIT Repository
Null pointer dereference in MatrixDiagPartOp

Source: CONFIRM
Type: Third Party Advisory
https://github.com/tensorflow/tensorflow/security/advisories/GHSA-fcwc-p4fc-c5cc

Source: CCN
Type: IBM Security Bulletin 6523816 (Watson Discovery)
IBM Watson Discovery for IBM Cloud Pak for Data affected by vulnerability in TensorFlow

Vulnerable Configuration:Configuration 1:
  • cpe:/a:google:tensorflow:*:*:*:*:*:*:*:* (Version >= 2.3.0 and < 2.3.4)
  • OR cpe:/a:google:tensorflow:*:*:*:*:*:*:*:* (Version >= 2.4.0 and < 2.4.3)
  • OR cpe:/a:google:tensorflow:2.5.0:*:*:*:*:*:*:*
  • OR cpe:/a:google:tensorflow:2.6.0:rc0:*:*:*:*:*:*
  • OR cpe:/a:google:tensorflow:2.6.0:rc1:*:*:*:*:*:*
  • OR cpe:/a:google:tensorflow:2.6.0:rc2:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:google:tensorflow:2.3.3:*:*:*:*:*:*:*
  • OR cpe:/a:google:tensorflow:2.4.2:*:*:*:*:*:*:*
  • OR cpe:/a:google:tensorflow:2.5.0:-:*:*:*:*:*:*
  • AND
  • cpe:/a:ibm:watson_discovery:2.0.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:watson_discovery:2.2.1:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:maximo_application_suite:8.7:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    google tensorflow *
    google tensorflow *
    google tensorflow 2.5.0
    google tensorflow 2.6.0 rc0
    google tensorflow 2.6.0 rc1
    google tensorflow 2.6.0 rc2
    google tensorflow 2.3.3
    google tensorflow 2.4.2
    google tensorflow 2.5.0 -
    ibm watson discovery 2.0.0
    ibm watson discovery 2.2.1
    ibm maximo application suite 8.7