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    CVE-2018-19838

    In LibSass prior to 3.5.5, functions inside ast.cpp for IMPLEMENT_AST_OPERATORS expansion allow attackers to cause a denial-of-service resulting from stack consumption via a crafted sass file, as demonstrated by recursive calls involving clone(), cloneChildren(), and copy().

    Published:Dec 4, 2018
    Last Modified:Nov 21, 2024
    EPS:Dec 4, 2018
    EPSS Score:0.00609
    CVSS Score:6.5

    Affected Products

    Vendor
    Sass-lang
    Product
    Libsass

    Exploits

    https://github.com/sass/libsass/issues/2660https://github.com/sass/libsass/issues/2660

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    CVE-2019-18797 (CVSS 6.5) — LibSass 3.6.1 has uncontrolled recursion in Sass::Eval::operator()(Sass::Binary_Expression*) in eval.cpp.…
    CVE-2019-18799 (CVSS 6.5) — LibSass before 3.6.3 allows a NULL pointer dereference in Sass::Parser::parseCompoundSelector in parser_select…
    CVE-2019-6283 (CVSS 6.5) — In LibSass 3.5.5, a heap-based buffer over-read exists in Sass::Prelexer::parenthese_scope in prelexer.hpp.…
    CVE-2019-6286 (CVSS 6.5) — In LibSass 3.5.5, a heap-based buffer over-read exists in Sass::Prelexer::skip_over_scopes in prelexer.hpp whe…
    CVE-2019-6284 (CVSS 6.5) — In LibSass 3.5.5, a heap-based buffer over-read exists in Sass::Prelexer::alternatives in prelexer.hpp.…
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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High