CVE-2019-20454
Full vulnerability record from the local CVENow database.
Description
An out-of-bounds read was discovered in PCRE before 10.34 when the pattern \X is JIT compiled and used to match specially crafted subjects in non-UTF mode. Applications that use PCRE to parse untrusted input may be vulnerable to this flaw, which would allow an attacker to crash the application. The flaw occurs in do_extuni_no_utf in pcre2_jit_compile.c.
Severity
HIGH
CVSS score
7.5
(v3.1)
Vulnerability status
Modified
Source identifier
Published
2020-02-14 14:15:10.593000
Last modified
2026-11-02 18:18:27.177000
View original CVE JSON
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"sourceIdentifier": "[email protected]",
"published": "2020-02-14T14:15:10.593",
"lastModified": "2026-11-02T18:18:27.177",
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"value": "An out-of-bounds read was discovered in PCRE before 10.34 when the pattern \\X is JIT compiled and used to match specially crafted subjects in non-UTF mode. Applications that use PCRE to parse untrusted input may be vulnerable to this flaw, which would allow an attacker to crash the application. The flaw occurs in do_extuni_no_utf in pcre2_jit_compile.c."
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"value": "Se detectó una lectura fuera de límites en PCRE versiones anteriores a 10.34, cuando el patrón \\X es compilado en JIT y usado para hacer coincidir temas especialmente diseñados en modo no UTF. Las aplicaciones que utilizan PCRE para analizar entradas no confiables pueden ser vulnerables a este fallo, lo que permitiría a un atacante bloquear la aplicación. El fallo ocurre en la función do_extuni_no_utf en el archivo pcre2_jit_compile.c."
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