Date: Thu, 7 Mar 2019 13:32:42 +0000 (UTC) From: Cy Schubert <cy@FreeBSD.org> To: ports-committers@freebsd.org, svn-ports-all@freebsd.org, svn-ports-head@freebsd.org Subject: svn commit: r494940 - head/security/vuxml Message-ID: <201903071332.x27DWg7e024143@repo.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: cy Date: Thu Mar 7 13:32:42 2019 New Revision: 494940 URL: https://svnweb.freebsd.org/changeset/ports/494940 Log: Document crafted ull dereference ntp attack. Security: CVE-2019-8936 Obtained from: nwtime.org Modified: head/security/vuxml/vuln.xml Modified: head/security/vuxml/vuln.xml ============================================================================== --- head/security/vuxml/vuln.xml Thu Mar 7 13:29:07 2019 (r494939) +++ head/security/vuxml/vuln.xml Thu Mar 7 13:32:42 2019 (r494940) @@ -58,6 +58,55 @@ Notes: * Do not forget port variants (linux-f10-libxml2, libxml2, etc.) --> <vuxml xmlns="http://www.vuxml.org/apps/vuxml-1">; + <vuln vid="c2576e14-36e2-11e9-9eda-206a8a720317"> + <topic>ntp -- Crafted null dereference attack from a trusted source with an authenticated mode 6 packet</topic> + <affects> + <package> + <name>ntp</name> + <range><lt>4.2.8p13</lt></range> + </package> + <package> + <name>FreeBSD</name> + <range><ge>12.0</ge><lt>12.0_2</lt></range> + <range><ge>11.2</ge><lt>11.2_8</lt></range> + </package> + </affects> + <description> + <body xmlns="http://www.w3.org/1999/xhtml">; + <p>Network Time Foundation reports:</p> + <blockquote cite="http://support.ntp.org/bin/view/Main/SecurityNotice#XXX-fill-this-in-XXX">; + <p>A crafted malicious authenticated mode 6 (ntpq) packet from a + permitted network address can trigger a NULL pointer dereference, + crashing ntpd.</p> + <p>Note that for this attack to work, the sending + system must be on an address that the target's ntpd accepts mode 6 + packets from, and must use a private key that is specifically + listed as being used for mode 6 authorization.</p> + <p>Impact: The ntpd daemon can crash due to the NULL pointer + dereference, causing a denial of service.</p> + <p>Mitigation:</p> + <ul> + <li>Use restrict noquery to limit addresses that can send mode 6 + queries.</li> + <li>Limit access to the private controlkey in ntp.keys.</li> + <li>Upgrade to 4.2.8p13, or later.</li> + </ul> + </blockquote> + </body> + </description> + <references> + <url>http://bugs.ntp.org/3565</url>; + <url>http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-8936</url>; + <url>https://nvd.nist.gov/vuln-metrics/cvss/v2-calculator?vector=(AV:N/AC:H/Au:M/C:N/I:N/A:C)</url>; + <url>https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:H</url>; + <cvename>CVE-2019-8936</cvename> + </references> + <dates> + <discovery>2019-01-15</discovery> + <entry>2019-03-07</entry> + </dates> + </vuln> + <vuln vid="d193aa9f-3f8c-11e9-9a24-6805ca0b38e8"> <topic>rssh - multiple vulnerabilities</topic> <affects>
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201903071332.x27DWg7e024143>