SB2019121622 - Out-of-bounds write in TensorFlow TensorFlow
Published: December 16, 2019 Updated: July 17, 2020
Security Bulletin ID
SB2019121622
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Out-of-bounds write (CVE-ID: CVE-2019-16778)
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
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.
Remediation
Install update from vendor's website.