NULL Pointer Dereference Affecting libonig package, versions <6.3.0-1


medium

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 0.26% (66th percentile)
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NVD
7.5 high
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Red Hat
6.5 medium

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  • Snyk ID SNYK-UBUNTU1804-LIBONIG-282513
  • published 24 May 2017
  • disclosed 24 May 2017

How to fix?

Upgrade Ubuntu:18.04 libonig to version 6.3.0-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libonig package and not the libonig package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A SIGSEGV occurs in left_adjust_char_head() during regular expression compilation. Invalid handling of reg->dmax in forward_search_range() could result in an invalid pointer dereference, normally as an immediate denial-of-service condition.