Libsass
CVE-2019-18799
MEDIUM
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Lifecycle Timeline
1DescriptionNVD
LibSass before 3.6.3 allows a NULL pointer dereference in Sass::Parser::parseCompoundSelector in parser_selectors.cpp.
AnalysisAI
LibSass before 3.6.3 allows a NULL pointer dereference in Sass::Parser::parseCompoundSelector in parser_selectors.cpp. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Technical ContextAI
This vulnerability is classified as NULL Pointer Dereference (CWE-476), which allows attackers to crash the application by dereferencing a null pointer. LibSass before 3.6.3 allows a NULL pointer dereference in Sass::Parser::parseCompoundSelector in parser_selectors.cpp. Affected products include: Sass-Lang Libsass. Version information: before 3.6.3.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Check pointers before dereferencing. Use static analysis tools to detect null pointer paths.
An issue was discovered in LibSass through 3.5.4. Rated high severity (CVSS 8.8), this vulnerability is remotely exploit
An issue was discovered in LibSass <3.5.3. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, n
An issue was discovered in LibSass through 3.5.4. Rated high severity (CVSS 8.8), this vulnerability is remotely exploit
An issue was discovered in LibSass through 3.5.4. Rated high severity (CVSS 8.1), this vulnerability is remotely exploit
An issue was discovered in LibSass through 3.5.4. Rated high severity (CVSS 8.1), this vulnerability is remotely exploit
An issue was discovered in LibSass through 3.5.4. Rated high severity (CVSS 8.1), this vulnerability is remotely exploit
There is a stack consumption vulnerability in the lex function in parser.hpp (as used in sassc) in LibSass 3.4.5. Rated
There is an illegal address access in ast.cpp of LibSass 3.4.5. Rated high severity (CVSS 7.5), this vulnerability is re
There is a heap based buffer over-read in lexer.hpp of LibSass 3.4.5. Rated high severity (CVSS 7.5), this vulnerability
There is an illegal address access in the Eval::operator function in eval.cpp in LibSass 3.4.5. Rated high severity (CVS
There is a stack consumption vulnerability in the Parser::advanceToNextToken function in parser.cpp in LibSass 3.4.5. Ra
LibSass before 3.6.3 allows a heap-based buffer over-read in Sass::weaveParents in ast_sel_weave.cpp. Rated medium sever
Same weakness CWE-476 – NULL Pointer Dereference
View allSame technique Null Pointer Dereference
View allShare
External POC / Exploit Code
Leaving vuln.today