|
dnsmasq Denial of Service and DNS Cache Poisoning
|
|
Secunia Advisory:
|
SA31197
|
|
|
Release Date:
|
2008-07-23
|
|
Last Update:
|
2008-07-29
|
|
Popularity:
|
4,260 views
|
|
|
Critical:
|
Moderately critical
|
|
Impact:
|
Spoofing
DoS
|
|
Where:
|
From remote
|
|
Solution Status:
|
Vendor Patch
|
|
| Software: | Dnsmasq 2.x
|
|
|
Secunia CVSS-2 Score:
|
Available in Secunia business solutions 
|
|
|
Subscribe:
|
Instant alerts on relevant vulnerabilities
|
|
| Advisory Content (Page 1 of 3) | [ 1 ] [ 2 ] [ 3 ] | |
|
Description:
Some vulnerabilities have been reported in dnsmasq, which can be exploited by malicious people to cause a DoS (Denial of Service) and poison the DNS cache.
1) A vulnerability is caused due to dnsmasq not sufficiently randomising the DNS transaction ID and the source port number, which can be exploited to poison the DNS cache.
2) An error when an unknown client tries to renew a DHCP lease can be exploited to crash the service.
Note: Additionally, an error within the netlink code and a potential crash when a host without a lease performs a DHCPINFORM have been reported in version 2.43.
Vulnerability #1 is reported in versions prior to 2.43, vulnerability #2 is reported in version 2.43.
Change Page:
[ 1 ] [ 2 ] [ 3 ]
|
|
|
Track this Secunia Advisory
|
Customers of the Secunia Vulnerability Intelligence solutions will automatically receive updates when new information regarding this advisory is released.
Read more about our Vulnerability Intelligence solutions and what they can do for you and your company.
|
|
|
About this Secunia Advisory
|
Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
|
