NULL Pointer Dereference Affecting python3.5 package, versions <3.5.2-2ubuntu0~16.04.8


Severity

Recommended
low

Based on Ubuntu security rating

    Threat Intelligence

    EPSS
    1.72% (89th percentile)

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  • Snyk ID SNYK-UBUNTU1604-PYTHON35-343084
  • published 16 Jan 2019
  • disclosed 31 Oct 2019

How to fix?

Upgrade Ubuntu:16.04 python3.5 to version 3.5.2-2ubuntu0~16.04.8 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3.5 package and not the python3.5 package as distributed by Ubuntu. See How to fix? for Ubuntu:16.04 relevant fixed versions and status.

An exploitable denial-of-service vulnerability exists in the X509 certificate parser of Python.org Python 2.7.11 / 3.6.6. A specially crafted X509 certificate can cause a NULL pointer dereference, resulting in a denial of service. An attacker can initiate or accept TLS connections using crafted certificates to trigger this vulnerability.

CVSS Scores

version 3.1
Expand this section

NVD

7.5 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High