Vulnerability Name:

CVE-2020-26269 (CCN-193280)

Assigned:2020-12-09
Published:2020-12-09
Updated:2021-08-17
Summary:In TensorFlow release candidate versions 2.4.0rc*, the general implementation for matching filesystem paths to globbing pattern is vulnerable to an access out of bounds of the array holding the directories. There are multiple invariants and preconditions that are assumed by the parallel implementation of GetMatchingPaths but are not verified by the PRs introducing it (#40861 and #44310). Thus, we are completely rewriting the implementation to fully specify and validate these. This is patched in version 2.4.0. This issue only impacts master branch and the release candidates for TF version 2.4. The final release of the 2.4 release will be patched.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/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): Network
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
7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/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): Network
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:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-125
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2020-26269

Source: XF
Type: UNKNOWN
tensorflow-cve202026269-dos(193280)

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/tensorflow/tensorflow/commit/8b5b9dc96666a3a5d27fad7179ff215e3b74b67c

Source: CCN
Type: TensorFlow GIT Repository
Heap out of bounds read in filesystem glob matching

Source: CONFIRM
Type: Exploit, Patch, Third Party Advisory
https://github.com/tensorflow/tensorflow/security/advisories/GHSA-9jjw-hf72-3mxw

Source: CCN
Type: IBM Security Bulletin 6412349 (Watson Machine Learning Community Edition)
TensorFlow in Watson Machine Learning Community Edition 1.6.2 and 1.7.0 has been patched for various security issues.

Source: CCN
Type: IBM Security Bulletin 6416135 (Watson Discovery)
IBM Watson Discovery for IBM Cloud Pak for Data affected by vulnerability in TensorFlow

Source: CCN
Type: IBM Security Bulletin 6469403 (Watson Machine Learning on CP4D)
Multiple TensorFlow Vulnerabilities Affect IBM Watson Machine Learning on CP4D

Vulnerable Configuration:Configuration 1:
  • cpe:/a:google:tensorflow:2.4.0:rc0:*:*:*:*:*:*
  • OR cpe:/a:google:tensorflow:2.4.0:rc1:*:*:*:*:*:*
  • OR cpe:/a:google:tensorflow:2.4.0:rc2:*:*:*:*:*:*
  • OR cpe:/a:google:tensorflow:2.4.0:rc3:*:*:*:*:*:*
  • OR cpe:/a:google:tensorflow:2.4.0:rc4:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:google:tensorflow:2.0.0:-:*:*:-:*:*:*
  • OR cpe:/a:google:tensorflow:2.1.1:*:*:*:-:*:*:*
  • OR cpe:/a:tensorflow:tensorflow:2.2.0:*:*:*:-:*:*:*
  • OR cpe:/a:tensorflow:tensorflow:2.3.0:*:*:*:-:*:*:*
  • AND
  • cpe:/a:ibm:watson_discovery:2.0.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:watson_machine_learning:1.6.2:*:community:*:*:*:*:*
  • OR cpe:/a:ibm:watson_machine_learning:1.7.0:*:community:*:*:*:*:*
  • OR cpe:/a:ibm:watson_discovery:2.2.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    google tensorflow 2.4.0 rc0
    google tensorflow 2.4.0 rc1
    google tensorflow 2.4.0 rc2
    google tensorflow 2.4.0 rc3
    google tensorflow 2.4.0 rc4
    tensorflow tensorflow 2.0.0 -
    tensorflow tensorflow 2.1.1
    tensorflow tensorflow 2.2.0
    tensorflow tensorflow 2.3.0
    ibm watson discovery 2.0.0
    ibm watson machine learning 1.6.2
    ibm watson machine learning 1.7.0
    ibm watson discovery 2.2.0