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    Debian LTS: DLA-2020-1: libonig security update

    Date
    536
    Posted By
    Several vulnerabilities were discovered in the Oniguruma regular expressions library, notably used in PHP mbstring.
    
    Package        : libonig
    Version        : 5.9.5-3.2+deb8u4
    CVE ID         : CVE-2019-19012 CVE-2019-19204 CVE-2019-19246
    Debian Bug     : 944959 945313
    
    
    Several vulnerabilities were discovered in the Oniguruma regular
    expressions library, notably used in PHP mbstring.
    
    CVE-2019-19012
    
        An integer overflow in the search_in_range function in regexec.c
        leads to an out-of-bounds read, in which the offset of this read
        is under the control of an attacker. (This only affects the 32-bit
        compiled version). Remote attackers can cause a denial-of-service
        or information disclosure, or possibly have unspecified other
        impact, via a crafted regular expression.
    
    CVE-2019-19204
    
        In the function fetch_range_quantifier in regparse.c, PFETCH is
        called without checking PEND. This leads to a heap-based buffer
        over-read and lead to denial-of-service via a crafted regular
        expression.
    
    CVE-2019-19246
    
        Heap-based buffer over-read in str_lower_case_match in regexec.c
        can lead to denial-of-service via a crafted regular expression.
    
    For Debian 8 "Jessie", these problems have been fixed in version
    5.9.5-3.2+deb8u4.
    
    We recommend that you upgrade your libonig packages.
    
    Further information about Debian LTS security advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: https://wiki.debian.org/LTS
    

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