{"id":2878,"date":"2021-09-29T09:46:42","date_gmt":"2021-09-29T14:46:42","guid":{"rendered":"https:\/\/cert.pa\/?p=2878"},"modified":"2021-09-29T09:46:42","modified_gmt":"2021-09-29T14:46:42","slug":"csirt-panama-aviso-2021-09-29-php-multiples-vulnerabilidades-en-php-7-y-php-8","status":"publish","type":"post","link":"https:\/\/cert.pa\/?p=2878","title":{"rendered":"CSIRT Panam\u00e1 Aviso 2021-09-29 PHP: M\u00faltiples vulnerabilidades en PHP 7 y PHP 8"},"content":{"rendered":"\n

CSIRT Panam\u00e1 Aviso 2021-09-29 PHP: M\u00faltiples vulnerabilidades en PHP 7 y PHP 8<\/p>\n\n\n\n

Gravedad: Critica
Fecha de publicaci\u00f3n: Septiembre 29, 2021
\u00daltima revisi\u00f3n: Septiembre 29, 2021
Sitio web: https:\/\/www.php.net\/
Sistemas Afectados:
\u2022 PHP 7, todas las versiones anteriores a la 7.4.24;
\u2022 PHP 8, todas las versiones anteriores a la 8.0.11.<\/p>\n\n\n\n

I. Descripci\u00f3n<\/p>\n\n\n\n

PHP ha detectado vulnerabilidades de severidad cr\u00edtica que podr\u00edan afectar al core.<\/p>\n\n\n\n

II. Impacto<\/p>\n\n\n\n

Vulnerabilidad: CVE-2017-8923<\/p>\n\n\n\n

Una vulnerabilidad en la funci\u00f3n zend_string_extend, en Zend\/zend_string.h de las versiones afectadas de PHP, podr\u00eda permitir alterar el valor de la longitud de una cadena (integer overflow) al concatenar estas, lo que podr\u00eda permitir a un atacante causar una condici\u00f3n de denegaci\u00f3n de servicio.<\/p>\n\n\n\n

III. Referencia a soluciones, herramientas e informaci\u00f3n<\/p>\n\n\n\n

Actualizar las versiones de los productos PHP mediante su sitio oficial, en las versiones:<\/p>\n\n\n\n

\u2022 PHP 7, a la versi\u00f3n 7.4.24;
Enlace: https:\/\/www.php.net\/ChangeLog-7.php#7.4.24<\/p>\n\n\n\n

\u2022 PHP 8, a la versi\u00f3n 8.0.11.
Enlace: https:\/\/www.php.net\/ChangeLog-8.php#8.0.11<\/p>\n\n\n\n

Fuentes:<\/p>\n\n\n\n

  1. Instituto Nacional de Ciberseguridad, INCIBE. Avisos Seguridad, M\u00faltiples vulnerabilidades en PHP 7 y PHP 8. 24 de septiembre del 2021. Recopilado en: https:\/\/www.incibe-cert.es\/alerta-temprana\/avisos-seguridad\/multiples-vulnerabilidades-php-7-y-php-8<\/li><\/ol>\n\n\n\n

    Informaci\u00f3n de contacto
    CSIRT PANAMA
    Computer Security Incident Response Team Autoridad Nacional para la Innovacion Gubernamental
    E-Mail: info@cert.pa
    Phone: +507 520-CERT (2378)
    Web: https:\/\/cert.pa
    Twitter: @CSIRTPanama
    Key ID: 16F2B124<\/p>\n","protected":false},"excerpt":{"rendered":"

    CSIRT Panam\u00e1 Aviso 2021-09-29 PHP: M\u00faltiples vulnerabilidades en PHP 7 y PHP 8 Gravedad: CriticaFecha de publicaci\u00f3n: Septiembre 29, 2021\u00daltima revisi\u00f3n: Septiembre 29, 2021Sitio web: https:\/\/www.php.net\/Sistemas Afectados:\u2022 PHP 7, todas las versiones anteriores a la…<\/p>\n","protected":false},"author":4,"featured_media":1532,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[4],"tags":[72,104],"class_list":["post-2878","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-avisos-de-seguridad","tag-avisos-de-seguridad","tag-php"],"_links":{"self":[{"href":"https:\/\/cert.pa\/index.php?rest_route=\/wp\/v2\/posts\/2878","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cert.pa\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cert.pa\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cert.pa\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/cert.pa\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2878"}],"version-history":[{"count":1,"href":"https:\/\/cert.pa\/index.php?rest_route=\/wp\/v2\/posts\/2878\/revisions"}],"predecessor-version":[{"id":2879,"href":"https:\/\/cert.pa\/index.php?rest_route=\/wp\/v2\/posts\/2878\/revisions\/2879"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cert.pa\/index.php?rest_route=\/wp\/v2\/media\/1532"}],"wp:attachment":[{"href":"https:\/\/cert.pa\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2878"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cert.pa\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2878"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cert.pa\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2878"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}