{"id":35187,"date":"2020-01-23T08:11:22","date_gmt":"2020-01-22T23:11:22","guid":{"rendered":"https:\/\/jirak.net\/wp\/usn-4247-2-python-apt-regression\/"},"modified":"2020-01-23T10:34:36","modified_gmt":"2020-01-23T01:34:36","slug":"usn-4247-2-python-apt-regression","status":"publish","type":"post","link":"https:\/\/jirak.net\/wp\/usn-4247-2-python-apt-regression\/","title":{"rendered":"USN-4247-2: python-apt regression"},"content":{"rendered":"<p>USN-4247-2: python-apt regression<\/p>\n<h2 id=\"python-apt-regression\">python-apt regression<\/h2>\n<p>A security issue affects these releases of Ubuntu and its derivatives:<\/p>\n<ul>\n<li>Ubuntu 19.10<\/li>\n<li>Ubuntu 19.04<\/li>\n<li>Ubuntu 18.04 LTS<\/li>\n<li>Ubuntu 16.04 LTS<\/li>\n<\/ul>\n<h3 id=\"summary\">Summary<\/h3>\n<p>USN-4247-1 introduced a regression in python-apt.<\/p>\n<h3 id=\"software-description\">Software Description<\/h3>\n<ul>\n<li>python-apt &#8211; Python interface to libapt-pkg<\/li>\n<\/ul>\n<h3 id=\"details\">Details<\/h3>\n<p>USN-4247-1 fixed vulnerabilities in python-apt. The updated packages caused<br \/>\na regression when attempting to upgrade to a new Ubuntu release. This<br \/>\nupdate fixes the problem.<\/p>\n<p>We apologize for the inconvenience.<\/p>\n<p>Original advisory details:<\/p>\n<p>It was discovered that python-apt would still use MD5 hashes to validate<br \/>\n certain downloaded packages. If a remote attacker were able to perform a<br \/>\n man-in-the-middle attack, this flaw could potentially be used to install<br \/>\n altered packages. (CVE-2019-15795)<\/p>\n<p>It was discovered that python-apt could install packages from untrusted<br \/>\n repositories, contrary to expectations. (CVE-2019-15796)<\/p>\n<h2 id=\"update-instructions\">Update instructions<\/h2>\n<p>The problem can be corrected by updating your system to the following package versions:<\/p>\n<dl>\n<dt>Ubuntu 19.10<\/dt>\n<dd><a href=\"https:\/\/launchpad.net\/ubuntu\/+source\/python-apt\">python-apt<\/a> &#8211; <a href=\"https:\/\/launchpad.net\/ubuntu\/+source\/python-apt\/1.9.0ubuntu1.3\">1.9.0ubuntu1.3<\/a><\/dd>\n<dd><a href=\"https:\/\/launchpad.net\/ubuntu\/+source\/python-apt\">python3-apt<\/a> &#8211; <a href=\"https:\/\/launchpad.net\/ubuntu\/+source\/python-apt\/1.9.0ubuntu1.3\">1.9.0ubuntu1.3<\/a><\/dd>\n<dt>Ubuntu 19.04<\/dt>\n<dd><a href=\"https:\/\/launchpad.net\/ubuntu\/+source\/python-apt\">python-apt<\/a> &#8211; <a href=\"https:\/\/launchpad.net\/ubuntu\/+source\/python-apt\/1.8.5~ubuntu0.3\">1.8.5~ubuntu0.3<\/a><\/dd>\n<dd><a href=\"https:\/\/launchpad.net\/ubuntu\/+source\/python-apt\">python3-apt<\/a> &#8211; <a href=\"https:\/\/launchpad.net\/ubuntu\/+source\/python-apt\/1.8.5~ubuntu0.3\">1.8.5~ubuntu0.3<\/a><\/dd>\n<dt>Ubuntu 18.04 LTS<\/dt>\n<dd><a href=\"https:\/\/launchpad.net\/ubuntu\/+source\/python-apt\">python-apt<\/a> &#8211; <a href=\"https:\/\/launchpad.net\/ubuntu\/+source\/python-apt\/1.6.5ubuntu0.2\">1.6.5ubuntu0.2<\/a><\/dd>\n<dd><a href=\"https:\/\/launchpad.net\/ubuntu\/+source\/python-apt\">python3-apt<\/a> &#8211; <a href=\"https:\/\/launchpad.net\/ubuntu\/+source\/python-apt\/1.6.5ubuntu0.2\">1.6.5ubuntu0.2<\/a><\/dd>\n<dt>Ubuntu 16.04 LTS<\/dt>\n<dd><a href=\"https:\/\/launchpad.net\/ubuntu\/+source\/python-apt\">python-apt<\/a> &#8211; <a href=\"https:\/\/launchpad.net\/ubuntu\/+source\/python-apt\/1.1.0~beta1ubuntu0.16.04.8\">1.1.0~beta1ubuntu0.16.04.8<\/a><\/dd>\n<dd><a href=\"https:\/\/launchpad.net\/ubuntu\/+source\/python-apt\">python3-apt<\/a> &#8211; <a href=\"https:\/\/launchpad.net\/ubuntu\/+source\/python-apt\/1.1.0~beta1ubuntu0.16.04.8\">1.1.0~beta1ubuntu0.16.04.8<\/a><\/dd>\n<\/dl>\n<p>To update your system, please follow these instructions: <a href=\"https:\/\/wiki.ubuntu.com\/Security\/Upgrades\">https:\/\/wiki.ubuntu.com\/Security\/Upgrades<\/a>.<\/p>\n<p>In general, a standard system update will make all the necessary changes.<\/p>\n<h2 id=\"references\">References<\/h2>\n<ul>\n<li><a href=\"https:\/\/usn.ubuntu.com\/usn\/usn-4247-1\">USN-4247-1<\/a><\/li>\n<li><a href=\"https:\/\/launchpad.net\/bugs\/1860606\">LP: 1860606<\/a><\/li>\n<\/ul>\n<p>Source: <a href=\"https:\/\/usn.ubuntu.com\/4247-2\/\" target=\"_blank\" rel=\"noopener noreferrer\">USN-4247-2: python-apt regression<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<div class=\"mh-excerpt\"><p>USN-4247-2: python-apt regression python-apt regression A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 19.10 Ubuntu 19.04 Ubuntu 18.04 LTS Ubuntu 16.04 LTS Summary USN-4247-1 introduced a regression in python-apt. Software Description python-apt &#8211; Python interface to libapt-pkg Details USN-4247-1 fixed vulnerabilities in python-apt. The updated packages caused a regression when attempting to upgrade to a new Ubuntu release. This update fixes the problem. We apologize for the inconvenience. Original advisory details: It was discovered that python-apt would still use MD5 hashes to validate certain downloaded packages. If a remote attacker were able to perform a man-in-the-middle attack, this flaw could potentially be used to install altered packages. (CVE-2019-15795) It was discovered that python-apt could install packages from untrusted repositories, contrary to expectations. (CVE-2019-15796) Update instructions The problem can be corrected by updating your system to the <a class=\"mh-excerpt-more\" href=\"https:\/\/jirak.net\/wp\/usn-4247-2-python-apt-regression\/\" title=\"USN-4247-2: python-apt regression\">[ more&#8230; ]<\/a><\/p>\n<\/div>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[586],"tags":[587],"class_list":["post-35187","post","type-post","status-publish","format-standard","hentry","category-ubuntu-usn","tag-ubuntu-usn"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/posts\/35187","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/comments?post=35187"}],"version-history":[{"count":1,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/posts\/35187\/revisions"}],"predecessor-version":[{"id":35188,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/posts\/35187\/revisions\/35188"}],"wp:attachment":[{"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/media?parent=35187"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/categories?post=35187"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/tags?post=35187"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}