In LibSass 3.5.5, a NULL Pointer Dereference in the function Sass::SelectorList::populateextends in SharedPtr.hpp (used by ast.cpp and astselectors.cpp) may cause a Denial of Service (application crash) via a crafted sass input file.
In LibSass prior to 3.5.5, the function handleerror in sasscontext.cpp allows attackers to cause a denial-of-service resulting from a heap-based buffer over-read via a crafted sass file.
In LibSass 3.5.5, a use-after-free vulnerability exists in the SharedPtr class in SharedPtr.cpp (or SharedPtr.hpp) that may cause a denial of service (application crash) or possibly have unspecified other impact.
LibSass is vulnerable to a denial of service, caused by uncontrolled recursion in Sass::Parser::parsecssvariablevalue in parser.cpp. By persuading a victim to open a specially-crafted file, a remote attacker could exploit this vulnerability to cause the application to crash.
In LibSass 3.5.5, a heap-based buffer over-read exists in Sass::Prelexer::parenthesescope in prelexer.hpp.
In LibSass 3.5.5, a heap-based buffer over-read exists in Sass::Prelexer::skipoverscopes in prelexer.hpp when called from Sass::Parser::parseimport(), a similar issue to CVE-2018-11693.
In LibSass 3.5.5, a NULL Pointer Dereference in the function Sass::Eval::operator()(Sass::SupportsOperator) in eval.cpp may cause a Denial of Service (application crash) via a crafted sass input file.
An issue was discovered in LibSass through 3.5.4. An out-of-bounds read of a memory region was found in the function Sass::handleerror which could be leveraged by an attacker to disclose information or manipulated to read from unmapped memory causing a denial of service.
An issue was discovered in LibSass through 3.5.4. A NULL pointer dereference was found in the function Sass::Functions::selectorappend which could be leveraged by an attacker to cause a denial of service (application crash) or possibly have unspecified other impact.
In LibSass 3.5.5, a heap-based buffer over-read exists in Sass::Prelexer::alternatives in prelexer.hpp.
Stack Overflow vulnerability in libsass 3.6.5 via the CompoundSelector::hasrealparentref function.
Stack overflow vulnerability in astselectors.cpp in function Sass::CompoundSelector::hasrealparentref in libsass:3.6.5-8-g210218, which can be exploited by attackers to causea denial of service (DoS). Also affects the command line driver for libsass, sassc 3.6.2.
Stack overflow vulnerability in astselectors.cpp: in function Sass::ComplexSelector::hasplaceholder in libsass:3.6.5-8-g210218, which can be exploited by attackers to cause a denial of service (DoS).
DISPUTED In inspect.cpp in LibSass 3.5.5, a high memory footprint caused by an endless loop (containing a Sass::Inspect::operator()(Sass::StringQuoted) stack frame) may cause a Denial of Service via crafted sass input files with stray '&' or '/' characters. NOTE: Upstream comments indicate this issue is closed as "won't fix" and "works as intended" by design.
LibSass 3.5.4 allows attackers to cause a denial-of-service (uncontrolled recursion in Sass::ComplexSelector::perform in ast.hpp and Sass::Inspect::operator in inspect.cpp).
In LibSass prior to 3.5.5, functions inside ast.cpp for IMPLEMENTASTOPERATORS 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().
In LibSass prior to 3.5.5, Sass::Eval::operator()(Sass::BinaryExpression) inside eval.cpp allows attackers to cause a denial-of-service resulting from stack consumption via a crafted sass file, because of certain incorrect parsing of '%' as a modulo operator in parser.cpp.
An issue was discovered in LibSass through 3.5.4. A NULL pointer dereference was found in the function Sass::Inspect::operator which could be leveraged by an attacker to cause a denial of service (application crash) or possibly have unspecified other impact.
An issue was discovered in LibSass through 3.5.4. An out-of-bounds read of a memory region was found in the function Sass::Prelexer::skipoverscopes which could be leveraged by an attacker to disclose information or manipulated to read from unmapped memory causing a denial of service.
An issue was discovered in LibSass <3.5.3. A NULL pointer dereference was found in the function Sass::Expand::operator which could be leveraged by an attacker to cause a denial of service (application crash) or possibly have unspecified other impact.
An issue was discovered in LibSass through 3.5.4. An out-of-bounds read of a memory region was found in the function Sass::Prelexer::exactly() which could be leveraged by an attacker to disclose information or manipulated to read from unmapped memory causing a denial of service.
A use-after-free vulnerability exists in handleerror() in sasscontext.cpp in LibSass 3.4.x and 3.5.x through 3.5.4 that could be leveraged to cause a denial of service (application crash) or possibly unspecified other impact.
LibSass 3.6.1 has uncontrolled recursion in Sass::Eval::operator()(Sass::BinaryExpression) in eval.cpp.
LibSass before 3.6.3 allows a NULL pointer dereference in Sass::Parser::parseCompoundSelector in parserselectors.cpp.
LibSass before 3.6.3 allows a heap-based buffer over-read in Sass::weaveParents in astselweave.cpp.