Infinite loop Affecting openssl package, versions [1.0.2,1.0.2zd) [1.1.1,1.1.1n) [3.0.0,3.0.2)


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    Exploit Maturity
    Proof of concept
    EPSS
    1.58% (88th percentile)

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  • Snyk ID SNYK-UNMANAGED-OPENSSL-2426984
  • published 16 Mar 2022
  • disclosed 15 Mar 2022
  • credit Unknown

How to fix?

Upgrade openssl to version 1.0.2zd, 1.1.1n, 3.0.2 or higher.

Overview

Affected versions of this package are vulnerable to Infinite loop via the BN_mod_sqrt() function when parsing certificates. It is possible to trigger this vulnerability by crafting a certificate that has invalid explicit curve parameters. Since certificate parsing happens before verification of the certificate signature, any process that parses an externally supplied certificate may be subject to a denial of service attack.

CVSS Scores

version 3.1
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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
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NVD

7.5 high
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SUSE

7.5 high
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Red Hat

7.5 high