Description
The tftp_request function in tftp.c in dnsmasq before 2.50, when --enable-tftp is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a TFTP read (aka RRQ) request with a malformed blksize option.
Exploits (1)
exploitdb
WRITEUP
VERIFIED
by Core Security · textdoswindows
https://www.exploit-db.com/exploits/9617
References (9)
Core 9
Core References
Third Party Advisory third-party-advisory
x_refsource_secunia
http://secunia.com/advisories/36563
Vendor Advisory vendor-advisory
x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-827-1
Issue Tracking x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=519020
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/36120
Various Sources x_refsource_confirm
http://www.thekelleys.org.uk/dnsmasq/CHANGELOG
Third Party Advisory, VDB Entry vdb-entry
signature
x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9816
Various Sources x_refsource_misc
http://www.coresecurity.com/content/dnsmasq-vulnerabilities
Vendor Advisory vendor-advisory
x_refsource_redhat
https://rhn.redhat.com/errata/RHSA-2010-0095.html
Vendor Advisory vendor-advisory
x_refsource_redhat
http://www.redhat.com/support/errata/RHSA-2009-1238.html
Scores
EPSS
0.0113
EPSS Percentile
78.4%
Details
CWE
CWE-399
Status
published
Products (50)
thekelleys/dnsmasq
0.4
thekelleys/dnsmasq
0.5
thekelleys/dnsmasq
0.6
thekelleys/dnsmasq
0.7
thekelleys/dnsmasq
0.95
thekelleys/dnsmasq
0.96
thekelleys/dnsmasq
0.98
thekelleys/dnsmasq
0.992
thekelleys/dnsmasq
0.996
thekelleys/dnsmasq
1.0
... and 40 more
Published
Sep 02, 2009
Tracked Since
Feb 18, 2026