Integer Overflow or Wraparound Affecting openssl package, versions <1:1.0.1e-51.el7_2.7


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    29.33% (97th percentile)

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  • Snyk ID SNYK-RHEL7-OPENSSL-5107597
  • published 26 Jul 2021
  • disclosed 23 Aug 2016

How to fix?

Upgrade RHEL:7 openssl to version 1:1.0.1e-51.el7_2.7 or higher.
This issue was patched in RHSA-2016:1940.

NVD Description

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

The tls_decrypt_ticket function in ssl/t1_lib.c in OpenSSL before 1.1.0 does not consider the HMAC size during validation of the ticket length, which allows remote attackers to cause a denial of service via a ticket that is too short.

References