File: 2185.txt

package info (click to toggle)
snort 2.7.0-20.4
  • links: PTS
  • area: main
  • in suites: lenny
  • size: 34,512 kB
  • ctags: 18,772
  • sloc: ansic: 115,404; sh: 10,893; makefile: 1,372; perl: 487; sql: 213
file content (66 lines) | stat: -rw-r--r-- 1,631 bytes parent folder | download | duplicates (6)
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
58
59
60
61
62
63
64
65
66
Rule:

--
Sid:
2185

--
Summary:
This event is generated when an attempt is made to exploit a known vulnerability in the xlog function of certain Linux NFS Utils packages.

Specifically this event is generated when UDP is used as the attack medium.

--
Impact:
Denial of Service (DoS), possible arbitrary code execution.

--
Detailed Information:
The mountd Remote Procedure Call (RPC) implements the NFS mount protocol. A vulnerability exists in some versions of the Linux NFS Utilities package prior to 1.0.4 that can lead to the possible execution of arbitrary code or a DoS against the affected server.

A programming error in the xlog function may be exploited by an attacker by sending RPC requests to mountd that do not contain any newline characters. This causes a buffer to overflow thus presenting the attacker with the opportunity to execute code.

--
Affected Systems:
Systems using Linux NFS Utils prior to version 1.0.4.

--
Attack Scenarios:
An attacker may send a specially crafted RPC request that does not 
contain any newline characters to the NFS server via TCP or UDP.

--
Ease of Attack:
Moderate.

--
False Positives:
None known.

--
False Negatives:
None known.

--
Corrective Action:
Limit remote access to RPC services.

Filter RPC ports at the firewall to ensure access is denied to RPC-enabled machines. 

Disable unneeded RPC services.

Upgrade to the latest non-affected version of the software.

Apply the appropriate vendor supplied patches.

--
Contributors:
Sourcefire Research Team
Brian Caswell <bmc@sourcefire.com>
Nigel Houghton <nigel.houghton@sourcefire.com>

--
Additional References:


--