{"id":745,"date":"2024-01-05T15:16:12","date_gmt":"2024-01-05T18:16:12","guid":{"rendered":"https:\/\/techsecurity.com.br\/?p=745"},"modified":"2024-01-05T15:18:09","modified_gmt":"2024-01-05T18:18:09","slug":"11-milhoes-de-servidores-ssh-estao-vulneraveis-ao-terrapin","status":"publish","type":"post","link":"https:\/\/techsecurity.com.br\/2024\/01\/11-milhoes-de-servidores-ssh-estao-vulneraveis-ao-terrapin\/","title":{"rendered":"11 milh\u00f5es de servidores SSH est\u00e3o vulner\u00e1veis ao Terrapin"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Cerca de 11 milh\u00f5es de servidores SSH, uma tecnologia usada para conex\u00f5es seguras na internet, est\u00e3o vulner\u00e1veis a um ataque chamado Terrapin, soment4e no Brasil s\u00e3o 143 mil. Esse ataque visa o protocolo SSH, que \u00e9 usado por clientes e servidores para se comunicarem de maneira segura na web. Ele foi desenvolvido por pesquisadores acad\u00eamicos na Alemanha e foca em manipular n\u00fameros espec\u00edficos durante o processo inicial de conex\u00e3o, comprometendo a seguran\u00e7a do canal SSH.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O Terrapin foi revelado recentemente em um artigo de pesquisa e recebeu uma identifica\u00e7\u00e3o de vulnerabilidade <a href=\"https:\/\/nvd.nist.gov\/vuln\/detail\/CVE-2023-48795\">CVE-2023-48795<\/a>. Essa falha permite que invasores modifiquem ou corrompam informa\u00e7\u00f5es transmitidas durante o in\u00edcio da conex\u00e3o SSH, quando as partes envolvidas est\u00e3o estabelecendo os m\u00e9todos de seguran\u00e7a que v\u00e3o utilizar. Este ataque \u00e9 especialmente eficaz em certos modos de criptografia, presentes em 77% dos servidores SSH quando o artigo foi publicado.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Basicamente, o ataque visa um componente chamado BPP, que serve para garantir a integridade das mensagens durante a conex\u00e3o inicial. O Terrapin consegue burlar esse sistema em servidores que usam modos de criptografia espec\u00edficos. Com esse ataque, um invasor pode reduzir a seguran\u00e7a dos algoritmos usados para autenticar usu\u00e1rios e desabilitar defesas contra certos tipos de ataques.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00c9 importante notar que para esse ataque funcionar, o invasor precisa estar em uma posi\u00e7\u00e3o intermedi\u00e1ria entre o usu\u00e1rio e o servidor, uma t\u00e9cnica conhecida como &#8220;man-in-the-middle&#8221;. Isso significa que o invasor age como um intermedi\u00e1rio entre o usu\u00e1rio e o site ou servi\u00e7o que est\u00e1 sendo acessado, podendo comprometer a comunica\u00e7\u00e3o.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Um relat\u00f3rio recente da Shadowserver, uma plataforma de monitoramento de amea\u00e7as online, alertou sobre esse risco nos servidores SSH. Cerca de 11 milh\u00f5es deles est\u00e3o vulner\u00e1veis, sendo que a maioria est\u00e1 nos Estados Unidos, China, Alemanha, R\u00fassia, Cingapura e Jap\u00e3o. Isso representa mais da metade das amostras analisadas por eles no espa\u00e7o online monitorado.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"582\" src=\"https:\/\/techsecurity.com.br\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2024\/01\/Terrapin-2-1024x582.png\" alt=\"\" class=\"wp-image-747\" srcset=\"https:\/\/techsecurity.com.br\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2024\/01\/Terrapin-2-1024x582.png 1024w, https:\/\/techsecurity.com.br\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2024\/01\/Terrapin-2-300x171.png 300w, https:\/\/techsecurity.com.br\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2024\/01\/Terrapin-2-768x437.png 768w, https:\/\/techsecurity.com.br\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2024\/01\/Terrapin-2.png 1300w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u00c9 recomendado a atualiza\u00e7\u00e3o dos sistemas afetados, abaixo pode ser encontrado a lista de vers\u00f5es vulner\u00e1veis e as vers\u00f5es com sua devida corre\u00e7\u00e3o.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Implementa\u00e7\u00e3o<\/th><th>Vers\u00f5es Afetadas<\/th><th>Patched Version(s)<\/th><\/tr><\/thead><tbody><tr><td>AsyncSSH*<\/td><td>2.14.1 and earlier<\/td><td><a href=\"https:\/\/asyncssh.readthedocs.io\/en\/latest\/changes.html#release-2-14-2-18-dec-2023\">2.14.2<\/a><\/td><\/tr><tr><td>Bitvise SSH*<\/td><td>9.31 and earlier<\/td><td><a href=\"https:\/\/www.bitvise.com\/ssh-client-version-history#933\">9.33<\/a><\/td><\/tr><tr><td>ConnectBot*<\/td><td>1.9.9 and earlier<\/td><td><a href=\"https:\/\/github.com\/connectbot\/connectbot\/releases\/tag\/v1.9.10\">1.9.10<\/a><\/td><\/tr><tr><td>CrushFTP<\/td><td>10.5.6 and earlier<\/td><td><a href=\"https:\/\/www.crushftp.com\/crush10wiki\/Wiki.jsp?page=Update\">10.6.0<\/a><\/td><\/tr><tr><td>CycloneSSH*<\/td><td>2.3.2 and earlier<\/td><td><a href=\"https:\/\/oryx-embedded.com\/download\/#changelog\">2.3.4<\/a><\/td><\/tr><tr><td>Dropbear*<\/td><td>2022.83 and earlier<\/td><td><a href=\"https:\/\/github.com\/mkj\/dropbear\/commit\/6e43be5c7b99dbee49dc72b6f989f29fdd7e9356\">To be released<\/a><\/td><\/tr><tr><td>Erlang\/OTP SSH*<\/td><td>OTP 26.2 and earlier<br>OTP 25.3.2.7 and earlier<br>OTP 24.3.4.14 and earlier<\/td><td><a href=\"https:\/\/github.com\/erlang\/otp\/releases\/tag\/OTP-26.2.1\">OTP 26.2.1<\/a><br><a href=\"https:\/\/github.com\/erlang\/otp\/releases\/tag\/OTP-25.3.2.8\">OTP 25.3.2.8<\/a><br><a href=\"https:\/\/github.com\/erlang\/otp\/releases\/tag\/OTP-24.3.4.15\">OTP 24.3.4.15<\/a><\/td><\/tr><tr><td>FileZilla Client<\/td><td>3.66.1 and earlier<\/td><td><a href=\"https:\/\/filezilla-project.org\/versions.php\">3.66.4<\/a><\/td><\/tr><tr><td>Golang x\/crypto\/ssh*<\/td><td>0.16.0 and earlier<\/td><td><a href=\"https:\/\/groups.google.com\/g\/golang-announce\/c\/qA3XtxvMUyg\">0.17.0<\/a><\/td><\/tr><tr><td>JSch (Fork)*<\/td><td>0.2.14 and earlier<\/td><td><a href=\"https:\/\/github.com\/mwiede\/jsch\/releases\/tag\/jsch-0.2.15\">0.2.15<\/a><\/td><\/tr><tr><td>libssh*<\/td><td>0.10.5 and earlier<br>0.9.7 and earlier<\/td><td><a href=\"https:\/\/www.libssh.org\/2023\/12\/18\/libssh-0-10-6-and-libssh-0-9-8-security-releases\/\">0.10.6<br>0.9.8<\/a><\/td><\/tr><tr><td>libssh2*<\/td><td>1.11.0 and earlier<\/td><td><a href=\"https:\/\/github.com\/libssh2\/libssh2\/commit\/d34d9258b8420b19ec3f97b4cc5bf7aa7d98e35a\">To be released<\/a><\/td><\/tr><tr><td>Maverick Legacy*<\/td><td>1.7.55 and earlier<\/td><td><a href=\"https:\/\/jadaptive.com\/important-java-ssh-security-update-new-ssh-vulnerability-discovered-cve-2023-48795\/\">1.7.56<\/a><\/td><\/tr><tr><td>Maverick Synergy*<\/td><td>3.0.21 and earlier (Hotfix)<br>3.0.10 and earlier (OSS)<\/td><td><a href=\"https:\/\/jadaptive.com\/important-java-ssh-security-update-new-ssh-vulnerability-discovered-cve-2023-48795\/\">3.0.22<br>3.1.0-SNAPSHOT<\/a><\/td><\/tr><tr><td>MobaXterm<\/td><td>23.5 and earlier<\/td><td><a href=\"https:\/\/mobaxterm.mobatek.net\/download-home-edition.html\">23.6<\/a><\/td><\/tr><tr><td>Nova<\/td><td>11.7 and earlier<\/td><td><a href=\"https:\/\/nova.app\/releases\/#v11.8\">11.8<\/a><\/td><\/tr><tr><td>OpenSSH*<\/td><td>9.5 \/ 9.5p1 and earlier<\/td><td><a href=\"https:\/\/www.openssh.com\/txt\/release-9.6\">9.6 \/ 9.6p1<\/a><\/td><\/tr><tr><td>Paramiko*<\/td><td>3.3.1 and earlier<\/td><td><a href=\"https:\/\/www.paramiko.org\/changelog.html#3.4.0\">3.4.0<\/a><\/td><\/tr><tr><td>phpseclib<\/td><td>3.0.34 and earlier<br>2.0.45 and earlier<br>1.0.21 and earlier<\/td><td><a href=\"https:\/\/github.com\/phpseclib\/phpseclib\/releases\/tag\/3.0.35\">3.0.35<\/a><br><a href=\"https:\/\/github.com\/phpseclib\/phpseclib\/releases\/tag\/2.0.46\">2.0.46<\/a><br><a href=\"https:\/\/github.com\/phpseclib\/phpseclib\/releases\/tag\/1.0.22\">1.0.22<\/a><\/td><\/tr><tr><td>PKIX-SSH*<\/td><td>14.3 and earlier<\/td><td><a href=\"https:\/\/roumenpetrov.info\/secsh\/#news20231220\">14.4<\/a><\/td><\/tr><tr><td>ProFTPD*<\/td><td>1.3.8a and earlier<\/td><td><a href=\"http:\/\/www.proftpd.org\/docs\/RELEASE_NOTES-1.3.8b\">1.3.8b<\/a><\/td><\/tr><tr><td>PuTTY*<\/td><td>0.79 and earlier<\/td><td><a href=\"https:\/\/www.chiark.greenend.org.uk\/~sgtatham\/putty\/changes.html\">0.80<\/a><\/td><\/tr><tr><td>Russh*<\/td><td>0.40.1 and earlier<\/td><td><a href=\"https:\/\/github.com\/warp-tech\/russh\/releases\/tag\/v0.40.2\">0.40.2<\/a><\/td><\/tr><tr><td>SecureCRT*<\/td><td>9.4.2 and earlier<\/td><td><a href=\"https:\/\/www.vandyke.com\/products\/securecrt\/history.txt\">9.4.3<\/a><\/td><\/tr><tr><td>SFTP Gateway<\/td><td>3.4.5 and earlier<\/td><td><a href=\"https:\/\/help.thorntech.com\/docs\/sftp-gateway-3.0\/aws-cve-2023-48795\/\">3.4.6<\/a><\/td><\/tr><tr><td>SFTPGo<\/td><td>2.5.5 and earlier<br>2.4.5 and earlier<\/td><td><a href=\"https:\/\/github.com\/drakkan\/sftpgo\/releases\/tag\/v2.5.6\">2.5.6<\/a><br><a href=\"https:\/\/github.com\/drakkan\/sftpgo\/releases\/tag\/v2.4.6\">2.4.6<\/a><\/td><\/tr><tr><td>ssh2*<\/td><td>1.14.0 and earlier<\/td><td><a href=\"https:\/\/github.com\/mscdex\/ssh2\/releases\/tag\/v1.15.0\">1.15.0<\/a><\/td><\/tr><tr><td>sshj*<\/td><td>0.37.0 and earlier<\/td><td><a href=\"https:\/\/github.com\/hierynomus\/sshj\/releases\/tag\/v0.38.0\">0.38.0<\/a><\/td><\/tr><tr><td>Tera Term*<\/td><td>5.0 and earlier<br>4.107 and earlier<\/td><td><a href=\"https:\/\/github.com\/TeraTermProject\/teraterm\/releases\/tag\/v5.1\">5.1<\/a><br><a href=\"https:\/\/github.com\/TeraTermProject\/teraterm\/releases\/tag\/v4.108\">4.108<\/a><\/td><\/tr><tr><td>Thrussh*<\/td><td>0.34.0 and earlier<\/td><td><a href=\"https:\/\/crates.io\/crates\/thrussh\/0.35.1\">0.35.1<\/a><\/td><\/tr><tr><td>TinySSH<\/td><td>20230101 and earlier<\/td><td><a href=\"https:\/\/github.com\/janmojzis\/tinyssh\/releases\/tag\/20240101\">20240101<\/a><\/td><\/tr><tr><td>Transmit<\/td><td>5.10.3 and earlier<\/td><td><a href=\"https:\/\/help.panic.com\/releasenotes\/transmit5\/\">5.10.4<\/a><\/td><\/tr><tr><td>Win32-OpenSSH*<\/td><td>9.4.0.0p1-Beta<\/td><td><a href=\"https:\/\/github.com\/PowerShell\/Win32-OpenSSH\/releases\/tag\/v9.5.0.0p1-Beta\">9.5.0.0p1-Beta<\/a><\/td><\/tr><tr><td>WinSCP<\/td><td>6.1.2 and earlier<\/td><td><a href=\"https:\/\/winscp.net\/eng\/docs\/history#6.2.2\">6.2.2 beta<\/a><\/td><\/tr><tr><td>XShell 7*<\/td><td>Build 0142 and earlier<\/td><td><a href=\"https:\/\/www.netsarang.com\/en\/xshell-update-history\/\">Build 0144<\/a><\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Cerca de 11 milh\u00f5es de servidores SSH, uma tecnologia usada para conex\u00f5es seguras na internet, est\u00e3o vulner\u00e1veis a um ataque [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":746,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[19],"tags":[125],"class_list":["post-745","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-informativo","tag-ssh"],"yoast_head":"<title>11 milh\u00f5es de servidores SSH est\u00e3o vulner\u00e1veis ao Terrapin - Tech Security<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/techsecurity.com.br\/2024\/01\/11-milhoes-de-servidores-ssh-estao-vulneraveis-ao-terrapin\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"11 milh\u00f5es de servidores SSH est\u00e3o vulner\u00e1veis ao Terrapin - Tech Security\" 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