Date: Sat, 14 Sep 2019 21:17:26 +0000 (UTC) From: Sunpoet Po-Chuan Hsieh <sunpoet@FreeBSD.org> To: ports-committers@freebsd.org, svn-ports-all@freebsd.org, svn-ports-head@freebsd.org Subject: svn commit: r512076 - head/security/vuxml Message-ID: <201909142117.x8ELHQZN017211@repo.freebsd.org>
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Author: sunpoet Date: Sat Sep 14 21:17:26 2019 New Revision: 512076 URL: https://svnweb.freebsd.org/changeset/ports/512076 Log: Document curl vulnerability Modified: head/security/vuxml/vuln.xml Modified: head/security/vuxml/vuln.xml ============================================================================== --- head/security/vuxml/vuln.xml Sat Sep 14 21:17:13 2019 (r512075) +++ head/security/vuxml/vuln.xml Sat Sep 14 21:17:26 2019 (r512076) @@ -58,6 +58,67 @@ Notes: * Do not forget port variants (linux-f10-libxml2, libxml2, etc.) --> <vuxml xmlns="http://www.vuxml.org/apps/vuxml-1">; + <vuln vid="9fb4e57b-d65a-11e9-8a5f-e5c82b486287"> + <topic>curl -- multiple vulnerabilities</topic> + <affects> + <package> + <name>curl</name> + <range><ge>7.19.4</ge><lt>7.66.0</lt></range> + </package> + </affects> + <description> + <body xmlns="http://www.w3.org/1999/xhtml">; + <p>curl security problems:</p> + <blockquote cite="https://curl.haxx.se/docs/security.html">; + <p>CVE-2019-5481: FTP-KRB double-free</p> + <p>libcurl can be told to use kerberos over FTP to a server, as set with + the CURLOPT_KRBLEVEL option.</p> + <p>During such kerberos FTP data transfer, the server sends data to curl + in blocks with the 32 bit size of each block first and then that amount + of data immediately following.</p> + <p>A malicious or just broken server can claim to send a very large block + and if by doing that it makes curl's subsequent call to realloc() to + fail, curl would then misbehave in the exit path and double-free the + memory.</p> + <p>In practical terms, an up to 4 GB memory area may very well be fine to + allocate on a modern 64 bit system but on 32 bit systems it will fail.</p> + <p>Kerberos FTP is a rarely used protocol with curl. Also, Kerberos + authentication is usually only attempted and used with servers that the + client has a previous association with.</p> + <p>CVE-2019-5482: TFTP small blocksize heap buffer overflow</p> + <p>libcurl contains a heap buffer overflow in the function + (tftp_receive_packet()) that receives data from a TFTP server. It can + call recvfrom() with the default size for the buffer rather than with + the size that was used to allocate it. Thus, the content that might + overwrite the heap memory is controlled by the server.</p> + <p>This flaw is only triggered if the TFTP server sends an OACK without + the BLKSIZE option, when a BLKSIZE smaller than 512 bytes was requested + by the TFTP client. OACK is a TFTP extension and is not used by all + TFTP servers.</p> + <p>Users choosing a smaller block size than default should be rare as the + primary use case for changing the size is to make it larger.</p> + <p>It is rare for users to use TFTP across the Internet. It is most + commonly used within local networks. TFTP as a protocol is always + inherently insecure.</p> + <p>This issue was introduced by the add of the TFTP BLKSIZE option + handling. It was previously incompletely fixed by an almost identical + issue called CVE-2019-5436.</p> + </blockquote> + </body> + </description> + <references> + <url>https://curl.haxx.se/docs/security.html</url>; + <url>https://curl.haxx.se/docs/CVE-2019-5481.html</url>; + <url>https://curl.haxx.se/docs/CVE-2019-5482.html</url>; + <cvename>CVE-2019-5481</cvename> + <cvename>CVE-2019-5482</cvename> + </references> + <dates> + <discovery>2019-09-11</discovery> + <entry>2019-09-14</entry> + </dates> + </vuln> + <vuln vid="9e0c6f7a-d46d-11e9-a1c7-b499baebfeaf"> <topic>OpenSSL -- Multiple vulnerabilities</topic> <affects>
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