CVE-2020-23302

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

There is a heap-use-after-free at ecma-helpers-string.c:772 in ecma_ref_ecma_string in JerryScript 2.2.0

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-416

Affected software

No affected versions have been published.

Timeline

Published
Jun 10, 2021
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2020

CVE-2020-233039.8There is a heap-buffer-overflow at jmem-poolman.c:165 in jmem_pools_collect_empty in JerryScript 2.2.0.CVE-2020-233069.8There is a stack-overflow at ecma-regexp-object.c:535 in ecma_regexp_match in JerryScript 2.2.0.CVE-2020-233087.5There is an Assertion 'context_p->stack_top_uint8 == LEXER_EXPRESSION_START' at js-parser-expr.c:3565 in parser_parse_expression in JerryScrCVE-2020-233097.5There is an Assertion 'context_p->stack_depth == context_p->context_stack_depth' failed at js-parser-statm.c:2756 in parser_parse_statementsCVE-2020-233107.5There is an Assertion 'context_p->next_scanner_info_p->type == SCANNER_TYPE_FUNCTION' failed at js-parser-statm.c:733 in parser_parse_functiCVE-2020-233117.5There is an Assertion 'context_p->token.type == LEXER_RIGHT_BRACE || context_p->token.type == LEXER_ASSIGN || context_p->token.type == LEXERCVE-2020-233127.5There is an Assertion 'context.status_flags & PARSER_SCANNING_SUCCESSFUL' failed at js-parser.c:2185 in parser_parse_source in JerryScript 2CVE-2020-233137.5There is an Assertion 'scope_stack_p > context_p->scope_stack_p' failed at js-scanner-util.c:2510 in scanner_literal_is_created in JerryScriCVE-2020-233147.5There is an Assertion 'block_found' failed at js-parser-statm.c:2003 parser_parse_try_statement_end in JerryScript 2.2.0.CVE-2020-233157.5There is an ASSERTION (pFuncBody->GetYieldRegister() == oldYieldRegister) failed in Js::DebugContext::RundownSourcesAndReparse in ChakraCoreCVE-2020-233197.5There is an Assertion in '(flags >> CBC_STACK_ADJUST_SHIFT) >= CBC_STACK_ADJUST_BASE || (CBC_STACK_ADJUST_BASE - (flags >> CBC_STACK_ADJUST_CVE-2020-233207.5There is an Assertion in 'context_p->next_scanner_info_p->type == SCANNER_TYPE_FUNCTION' in parser_parse_function_arguments in JerryScript 2
CVE-2020-23302: Critical severity, CVSS 9.8 | Vulnix