NULL Pointer Dereference Affecting openssl-devel package, versions <1:3.0.1-47.el9_1


Severity

Recommended
medium

Based on AlmaLinux security rating

    Threat Intelligence

    EPSS
    0.19% (57th percentile)

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  • Snyk ID SNYK-ALMALINUX9-OPENSSLDEVEL-5607613
  • published 28 May 2023
  • disclosed 28 Feb 2023

How to fix?

Upgrade AlmaLinux:9 openssl-devel to version 1:3.0.1-47.el9_1 or higher.
This issue was patched in ALSA-2023:0946.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssl-devel package and not the openssl-devel package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 relevant fixed versions and status.

An invalid pointer dereference on read can be triggered when an application tries to load malformed PKCS7 data with the d2i_PKCS7(), d2i_PKCS7_bio() or d2i_PKCS7_fp() functions.

The result of the dereference is an application crash which could lead to a denial of service attack. The TLS implementation in OpenSSL does not call this function however third party applications might call these functions on untrusted data.

CVSS Scores

version 3.1
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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
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SUSE

5.9 medium
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Red Hat

7.5 high