Out-of-bounds Read Affecting libidn package, versions <1.33


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    EPSS
    0.48% (77th percentile)

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  • Snyk ID SNYK-COCOAPODS-LIBIDN-470966
  • published 2 Oct 2019
  • disclosed 20 Jul 2016
  • credit Unknown

How to fix?

Upgrade libidn to version 1.33 or higher.

Overview

libidn is an Encode/decode i18n domains using Stringprep, Punycode and IDNA.

Affected versions of this package are vulnerable to Out-of-bounds Read due to idna_to_ascii_4i function in lib/idna.c does not properly handle 64 bytes of input, leading to out-of-bounds read and crash.

CVSS Scores

version 3.1
Expand this section

Snyk

Recommended
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