Heap-based buffer overflow in the tftp_request function in tftp.c in dnsmasq before 2.50, when --enable-tftp is used, might allow remote attackers to execute arbitrary code via a long filename in a TFTP packet, as demonstrated by a read (aka RRQ) request.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://www.securityfocus.com/bid/36121 | patch vdb entry |
| http://secunia.com/advisories/36563 | third party advisory |
| http://www.ubuntu.com/usn/USN-827-1 | vendor advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=519020 | |
| https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10538 | signature vdb entry |
| http://www.thekelleys.org.uk/dnsmasq/CHANGELOG | vendor advisory |
| http://www.coresecurity.com/content/dnsmasq-vulnerabilities | patch |
| https://rhn.redhat.com/errata/RHSA-2010-0095.html | vendor advisory |
| http://www.redhat.com/support/errata/RHSA-2009-1238.html | vendor advisory |