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| Vulnerability ID | VCID-hf1x-yzbu-aaac |
| Aliases |
CVE-2010-4221
|
| Summary | Multiple stack-based buffer overflows in the pr_netio_telnet_gets function in netio.c in ProFTPD before 1.3.3c allow remote attackers to execute arbitrary code via vectors involving a TELNET IAC escape character to a (1) FTP or (2) FTPS server. |
| Status | Published |
| Exploitability | 2.0 |
| Weighted Severity | 9.0 |
| Risk | 10.0 |
| Affected and Fixed Packages | Package Details |
| Data source | Exploit-DB |
|---|---|
| Date added | Nov. 7, 2010 |
| Description | ProFTPd IAC 1.3.x - Remote Command Execution |
| Ransomware campaign use | Known |
| Source publication date | Nov. 7, 2010 |
| Exploit type | remote |
| Platform | linux |
| Source update date | Dec. 4, 2016 |
| Data source | Metasploit |
|---|---|
| Description | This module exploits a stack-based buffer overflow in versions of ProFTPD server between versions 1.3.2rc3 and 1.3.3b. By sending data containing a large number of Telnet IAC commands, an attacker can corrupt memory and execute arbitrary code. The Debian Squeeze version of the exploit uses a little ROP stub to indirectly transfer the flow of execution to a pool buffer (the cmd_rec "res" in "pr_cmd_read"). The Ubuntu version uses a ROP stager to mmap RWX memory, copy a small stub to it, and execute the stub. The stub then copies the remainder of the payload in and executes it. NOTE: Most Linux distributions either do not ship a vulnerable version of ProFTPD, or they ship a version compiled with stack smashing protection. Although SSP significantly reduces the probability of a single attempt succeeding, it will not prevent exploitation. Since the daemon forks in a default configuration, the cookie value will remain the same despite some attempts failing. By making repeated requests, an attacker can eventually guess the cookie value and exploit the vulnerability. The cookie in Ubuntu has 24-bits of entropy. This reduces the effectiveness and could allow exploitation in semi-reasonable amount of time. |
| Note | Stability: - crash-service-down SideEffects: - ioc-in-logs Reliability: - unreliable-session |
| Ransomware campaign use | Unknown |
| Source publication date | Nov. 1, 2010 |
| Platform | Linux |
| Source URL | https://github.com/rapid7/metasploit-framework/tree/master/modules/exploits/linux/ftp/proftp_telnet_iac.rb |
| Exploitability (E) | Access Vector (AV) | Access Complexity (AC) | Authentication (Au) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|
high functional unproven proof_of_concept not_defined |
local adjacent_network network |
high medium low |
multiple single none |
none partial complete |
none partial complete |
none partial complete |
| Percentile | 0.98672 |
| EPSS Score | 0.83337 |
| Published At | Dec. 27, 2024, midnight |
| Date | Actor | Action | Source | VulnerableCode Version |
|---|---|---|---|---|
| There are no relevant records. | ||||