Timing Attack Affecting tlslite-ng package, versions [,0.7.6) [0.8.0-alpha1, 0.8.0-alpha39)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    EPSS
    0.3% (70th percentile)

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  • Snyk ID SNYK-PYTHON-TLSLITENG-1053429
  • published 22 Dec 2020
  • disclosed 21 Dec 2020
  • credit Hubert Kario

How to fix?

Upgrade tlslite-ng to version 0.7.6, 0.8.0-alpha39 or higher.

Overview

Affected versions of this package are vulnerable to Timing Attack. It has multiple ways in which it leaks information about the decrypted ciphertext - both the bit length of the decrypted message as well as where the first unexpected byte lays.

CVSS Scores

version 3.1
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Snyk

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

NVD

7.5 high