Rule Category

PROTOCOL-IMAP -- Snort alerted on Internet Message Access Protocol (IMAP) traffic, an email retrieval system for clients over TCP/IP connection. This protocol handles emails on a remote server, so all actions are processed on that server rather than the user client. This protocol is vulnerable to injection, restriction and process evasions, leaks, relay abuse, and other attacks.

Alert Message

PROTOCOL-IMAP login buffer overflow attempt

Rule Explanation

Arbitrary command execution via IMAP buffer overflow in authenticate command. Impact: CVSS base score 10.0 CVSS impact score 10.0 CVSS exploitability score 10.0 confidentialityImpact COMPLETE integrityImpact COMPLETE availabilityImpact COMPLETE Details: Ease of Attack:

What To Look For

Known Usage

No public information

False Positives

No known false positives

Contributors

Talos research team. This document was generated from data supplied by the national vulnerability database, a product of the national institute of standards and technology. For more information see [nvd].

MITRE ATT&CK Framework

Tactic:

Technique:

For reference, see the MITRE ATT&CK vulnerability types here: https://attack.mitre.org

CVE

Rule Vulnerability

CVE Additional Information

CVE-1999-0005
Arbitrary command execution via IMAP buffer overflow in authenticate command.
Details
SeverityHIGH Base Score10.0
Impact Score10.0 Exploit Score10.0
Confidentiality ImpactCOMPLETE Integrity ImpactCOMPLETE
Availability ImpactCOMPLETE Access Vector
AuthenticationNONE Ease of Access
CVE-2006-5961
Buffer overflow in Mercury Mail Transport System 4.01b for Windows has unknown impact and attack vectors, as originally reported in a GLEG VulnDisco pack. NOTE: the provenance of this information is unknown; the details are obtained from third party information. The original researcher is reliable.
Details
SeverityHIGH Base Score7.5
Impact Score6.4 Exploit Score10.0
Confidentiality ImpactPARTIAL Integrity ImpactPARTIAL
Availability ImpactPARTIAL Access Vector
AuthenticationNONE Ease of Access
CVE-2007-3925
Multiple buffer overflows in the IMAP service (imapd32.exe) in Ipswitch IMail Server 2006 before 2006.21 allow remote authenticated users to execute arbitrary code via the (1) Search or (2) Search Charset command.
Details
SeverityMEDIUM Base Score6.5
Impact Score6.4 Exploit Score8.0
Confidentiality ImpactPARTIAL Integrity ImpactPARTIAL
Availability ImpactPARTIAL Access Vector
AuthenticationSINGLE Ease of Access
CVE-1999-1557
Buffer overflow in the login functions in IMAP server (imapd) in Ipswitch IMail 5.0 and earlier allows remote attackers to cause a denial of service and possibly execute arbitrary code via (1) a long user name or (2) a long password.
Details
SeverityMEDIUM Base Score5.0
Impact Score2.9 Exploit Score10.0
Confidentiality ImpactNONE Integrity ImpactNONE
Availability ImpactPARTIAL Access Vector
AuthenticationNONE Ease of Access
CVE-2004-1011
Stack-based buffer overflow in Cyrus IMAP Server 2.2.4 through 2.2.8, with the imapmagicplus option enabled, allows remote attackers to execute arbitrary code via a long (1) PROXY or (2) LOGIN command, a different vulnerability than CVE-2004-1015.
Details
SeverityHIGH Base Score10.0
Impact Score10.0 Exploit Score10.0
Confidentiality ImpactCOMPLETE Integrity ImpactCOMPLETE
Availability ImpactCOMPLETE Access Vector
AuthenticationNONE Ease of Access
CVE-2005-1255
Multiple stack-based buffer overflows in the IMAP server in IMail 8.12 and 8.13 in Ipswitch Collaboration Suite (ICS), and other versions before IMail Server 8.2 Hotfix 2, allow remote attackers to execute arbitrary code via a LOGIN command with (1) a long username argument or (2) a long username argument that begins with a special character.
Details
SeverityHIGH Base Score10.0
Impact Score10.0 Exploit Score10.0
Confidentiality ImpactCOMPLETE Integrity ImpactCOMPLETE
Availability ImpactCOMPLETE Access Vector
AuthenticationNONE Ease of Access
CVE-2007-1373
Stack-based buffer overflow in Mercury/32 (aka Mercury Mail Transport System) 4.01b and earlier allows remote attackers to execute arbitrary code via a long LOGIN command. NOTE: this might be the same issue as CVE-2006-5961.
Details
SeverityHIGH Base Score10.0
Impact Score10.0 Exploit Score10.0
Confidentiality ImpactCOMPLETE Integrity ImpactCOMPLETE
Availability ImpactCOMPLETE Access Vector
AuthenticationNONE Ease of Access
CVE-2007-2795
Multiple buffer overflows in Ipswitch IMail before 2006.21 allow remote attackers or authenticated users to execute arbitrary code via (1) the authentication feature in IMailsec.dll, which triggers heap corruption in the IMail Server, or (2) a long SUBSCRIBE IMAP command, which triggers a stack-based buffer overflow in the IMAP Daemon.
Details
SeverityHIGH Base Score9.0
Impact Score10.0 Exploit Score8.0
Confidentiality ImpactCOMPLETE Integrity ImpactCOMPLETE
Availability ImpactCOMPLETE Access Vector
AuthenticationSINGLE Ease of Access