1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
Rule:
--
Sid:
278
--
Summary:
This event is generated when a remote attacker transmits a malformed request for a page on a web server port, which can indicate a Denial of Service (DoS) attack on a RealNetworks RealServer.
--
Impact:
The RealNetworks RealServer service will crash.
--
Detailed Information:
RealNetworks RealServer is a server application that serves streaming audio to clients. When an attacker sends a request for a template file in the /viewsource/ directory with an empty variable value, RealServer crashes.
--
Affected Systems:
Systems running RealNetworks RealServer 7.0 with View Source functionality enabled.
--
Attack Scenarios:
An attacker sends an HTTP request for /viewsource/template.html? on a RealServer audio server. RealServer crashes, stopping audio transmission.
--
Ease of Attack:
Simple.
--
False Positives:
If a legitimate remote user attempts to use the View Source function on RealServer, this rule may generate an event.
--
False Negatives:
None known.
--
Corrective Action:
Upgrade to the latest version of the software or disable the View Source functionality. The vendor has issued an advisory, workarounds, and downloadable patches at http://service.real.com/help/faq/servgviewsrc.html.
--
Contributors:
Original rule writer unknown
Sourcefire Research Team
Sourcefire Technical Publications Team
Jen Harvey <jennifer.harvey@sourcefire.com>
--
Additional References:
RealNetworks
http://service.real.com/help/faq/servgviewsrc.html
--
|
