NULL Pointer Dereference Affecting openssl-libs package, versions <1:1.0.1e-34.el7_0.3


high

Snyk CVSS

    Attack Complexity Low
    User Interaction Required

    Threat Intelligence

    EPSS 4.38% (93rd percentile)
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NVD
4.3 medium
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Red Hat
4.3 medium

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  • Snyk ID SNYK-CENTOS7-OPENSSLLIBS-2032605
  • published 26 Jul 2021
  • disclosed 21 Apr 2014

How to fix?

Upgrade Centos:7 openssl-libs to version 1:1.0.1e-34.el7_0.3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssl-libs package and not the openssl-libs package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

The do_ssl3_write function in s3_pkt.c in OpenSSL 1.x through 1.0.1g, when SSL_MODE_RELEASE_BUFFERS is enabled, does not properly manage a buffer pointer during certain recursive calls, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via vectors that trigger an alert condition.

References