Remote Code Execution (RCE) Affecting org.webjars.npm:jsrsasign package, versions [,10.4.1)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    EPSS
    1.63% (88th percentile)

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  • Snyk ID SNYK-JAVA-ORGWEBJARSNPM-574713
  • published 22 Jun 2020
  • disclosed 22 Jun 2020
  • credit Antonio de la Piedra

How to fix?

Upgrade org.webjars.npm:jsrsasign to version 10.4.1 or higher.

Overview

org.webjars.npm:jsrsasign is a free pure JavaScript cryptographic library.

Affected versions of this package are vulnerable to Remote Code Execution (RCE). Its RSASSA-PSS (RSA-PSS) implementation does not detect signature manipulation/modification by prepending '\0' bytes to a signature (it accepts these modified signatures as valid). An attacker can abuse this behavior in an application by creating multiple valid signatures where only one signature should exist. Also, an attacker might prepend these bytes with the goal of triggering memory corruption issues.

References

CVSS Scores

version 3.1
Expand this section

Snyk

Recommended
5.6 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    Low
  • Integrity (I)
    Low
  • Availability (A)
    Low
Expand this section

NVD

9.8 critical