In Tensorflow before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1, the `tf.raw_ops.Switch` operation takes as input a tensor and a boolean and outputs two tensors. Depending on the boolean value, one of the tensors is exactly the input tensor whereas the other one should be an empty tensor. However, the eager runtime traverses all tensors in the output. Since only one of the tensors is defined, the other one is `nullptr`, hence we are binding a reference to `nullptr`. This is undefined behavior and reported as an error if compiling with `-fsanitize=null`. In this case, this results in a segmentation fault The issue is patched in commit da8558533d925694483d2c136a9220d6d49d843c, and is released in TensorFlow versions 1.15.4, 2.0.3, 2.1.2, 2.2.1, or 2.3.1.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - In Tensorflow before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1, the `tf.raw_ops.Switch` operation
    takes as input a tensor and a boolean and outputs two tensors. Depending on the boolean value, one of the
    tensors is exactly the input tensor whereas the other one should be an empty tensor. However, the eager
    runtime traverses all tensors in the output. Since only one of the tensors is defined, the other one is
    `nullptr`, hence we are binding a reference to `nullptr`. This is undefined behavior and reported as an
    error if compiling with `-fsanitize=null`. In this case, this results in a segmentation fault The issue is
    patched in commit da8558533d925694483d2c136a9220d6d49d843c, and is released in TensorFlow versions 1.15.4,
    2.0.3, 2.1.2, 2.2.1, or 2.3.1. (CVE-2020-15190)

This update for tensorflow2 fixes the following issues :

  - updated to 2.1.2 with following fixes (boo#1177022) :

  - Fixes an undefined behavior causing a segfault in     tf.raw_ops.Switch (CVE-2020-15190)

  - Fixes three vulnerabilities in conversion to DLPack     format (CVE-2020-15191, CVE-2020-15192, CVE-2020-15193)

  - Fixes two vulnerabilities in SparseFillEmptyRowsGrad     (CVE-2020-15194, CVE-2020-15195)

  - Fixes an integer truncation vulnerability in code using     the work sharder API (CVE-2020-15202)

  - Fixes a format string vulnerability in     tf.strings.as_string (CVE-2020-15203)

  - Fixes segfault raised by calling session-only ops in     eager mode (CVE-2020-15204)

  - Fixes data leak and potential ASLR violation from     tf.raw_ops.StringNGrams (CVE-2020-15205)

  - Fixes segfaults caused by incomplete SavedModel     validation (CVE-2020-15206)

  - Fixes a data corruption due to a bug in negative     indexing support in TFLite (CVE-2020-15207)

  - Fixes a data corruption due to dimension mismatch in     TFLite (CVE-2020-15208)

  - Fixes several vulnerabilities in TFLite saved model     format (CVE-2020-15209, CVE-2020-15210, CVE-2020-15211)

ID	Name	Product	Family	Type	Severity
410170	SCA: security update for tensorflow, tensorflow-cpu, tensorflow-gpu (GHSA-4g9f-63rx-5cw4)	Tenable Cloud Security	SCA Checks	Local	medium
410170	SCA: security update for tensorflow, tensorflow-cpu, tensorflow-gpu (GHSA-4g9f-63rx-5cw4)	Tenable Self-Hosted Container Security	SCA Checks	Local	medium
142135	openSUSE Security Update : tensorflow2 (openSUSE-2020-1766)	Nessus	SuSE Local Security Checks	Local	critical

Detections

Analytics

CVE-2020-15190

medium

Tenable Plugins

medium

medium

critical