{"id":77984,"date":"2020-04-15T07:42:14","date_gmt":"2020-04-15T05:42:14","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-git-privodyashhaya-k-utechke-uchyotnyh-dannyh"},"modified":"2020-04-15T07:42:14","modified_gmt":"2020-04-15T05:42:14","slug":"uyazvimost-v-git-privodyashhaya-k-utechke-uchyotnyh-dannyh","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/uyazvimost-v-git-privodyashhaya-k-utechke-uchyotnyh-dannyh","title":{"rendered":"Haavatavus Git-is, mis viib autentimisandmete leketeni.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Avaldatud<\/a><\/noindex> korrektsiooniversioonid jaotatud allikate haldamise s\u00fcsteemile Git 2.26.1, 2.25.3, 2.24.2, 2.23.2, 2.22.3, 2.21.2, 2.20.3, 2.19.4, 2.18.3 ja 2.17.4, milles on k\u00f5rvaldatud haavatavus<\/a><\/noindex> (CVE-2020-5260<\/a><\/noindex>) t\u00f6\u00f6l «credential.helper<\/a><\/noindex>«, mis viib autentimisandmete edastamiseni valele serverile, kui git-klient p\u00f6\u00f6rdub repo poole spetsiaalselt vormindatud URL-i kaudu, mis sisaldab reavahetusm\u00e4rki. Haavatavust saab kasutada, et suunata andmed serverisse, mis kuulub r\u00fcndajale, teise hosti autentimisandmetest. <\/p>\n

Kui URL on vormis \"https:\/\/evil.com?host=github.com\/\", siis autentimisandmete t\u00f6\u00f6tleja \u00fchenduse loomisel hostiga evil.com edastab github.com jaoks m\u00e4\u00e4ratud autentimiseks vajalikud parameetrid. Probleem ilmneb selliste toimingute tegemisel nagu \"git clone\", sealhulgas alamsubmodule k\u00e4sitledes (nt \"git submodule update\" k\u00e4ivitamisel t\u00f6\u00f6deldakse automaatselt URL-e, mis on m\u00e4\u00e4ratud .gitmodules failis reposti jaoks). See haavatavus on k\u00f5ige ohtlikum olukordades, kus arendaja kloonib reposid, mitte URL-i n\u00e4gemata, n\u00e4iteks t\u00f6\u00f6tades alamsubmoduledega v\u00f5i s\u00fcsteemides, mis teevad automaatseid toiminguid, nagu n\u00e4iteks pakettide koostamise skriptides.<\/p>\n

Haavatavuse blokeerimiseks uutes versioonides on keelatud<\/a><\/noindex> on uue rea s\u00fcmboli edastamine igasugustes v\u00e4\u00e4rtustes, mis edastatakse akreditiivide vahetamise protokolli kaudu. Pakettide v\u00e4ljalasketeabe saamiseks saate j\u00e4lgida Debian<\/a><\/noindex>, Ubuntu<\/a><\/noindex>, RHEL<\/a><\/noindex>, SUSE\/openSUSE<\/a><\/noindex>, Fedora<\/a><\/noindex>, Arch<\/a><\/noindex>, FreeBSD<\/a><\/noindex>.<\/p>\n

K\u00e4iguteena probleemi blokeerimiseks soovitame<\/a><\/noindex> \u00e4ra kasuta credential.helper avalike repode puhul ja \u00e4ra kasuta «git clone» k\u00e4sku «—recurse-submodules» kontrollimata repode jaoks. Credential.helperi t\u00f6\u00f6tluse t\u00e4ielikuks keelamiseks, mis toimib salvestamine<\/a><\/noindex> ja paroolide v\u00e4ljav\u00f5ttmine vahem\u00e4lust<\/a><\/noindex>, mis on kaitstud andmesalvestuss\u00fcsteemis koormuse<\/a><\/noindex> v\u00f5i paroolifailist, saate kasutada j\u00e4rgmisi k\u00e4ske:<\/p>\n

git config —unset credential.helper
\n git config —global —unset credential.helper
\n git config —system —unset credential.helper<\/p>\n

<\/a><\/noindex><\/p>\n

Allikas: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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