Information Exposure Affecting node package, versions [6.0.0,6.17.0) [8.0.0,8.15.1)


0.0
medium

Snyk CVSS

    Attack Complexity High

    Threat Intelligence

    EPSS 0.81% (82nd percentile)
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NVD
5.9 medium
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SUSE
4 medium
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Red Hat
5.9 medium

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  • Snyk ID SNYK-UPSTREAM-NODE-173739
  • published 28 Feb 2019
  • disclosed 26 Feb 2019
  • credit Jan Maybach and Marco Pracucci

How to fix?

Upgrade node to version 6.17.0, 8.15.1 or higher.

Overview

node is a JavaScript runtime built on Chrome's V8 JavaScript engine.

Affected versions of this package are vulnerable to Information Exposure. Under certain circumstances, a TLS server can be forced to respond differently to a client if a zero-byte record is received with an invalid padding compared to a zero-byte record with an invalid MAC. This can be used as the basis of a padding oracle attack to decrypt data.

Only TLS connections using certain ciphersuites executing under certain conditions are exploitable. Node are currently unable to determine whether the use of OpenSSL in Node.js exposes this vulnerability. They are taking a cautionary approach and recommending the same for users.