The POP3 server (EPSTPOP3S.EXE) 4.22 in E-Post Mail Server 4.10 allows remote attackers to obtain sensitive information via multiple crafted APOP commands for a known POP3 account, which displays the password in a POP3 error message.

Threat-Mapped Scoring

Score: 3.0

Priority: P2 - Serious (High)

• S1 – Steal Customer Account Information

EPSS

Score: 0.00516
Percentile: 0.6569

CVSS Scoring

Mapped CWE(s)

• CWE-200 : Exposure of Sensitive Information to an Unauthorized Actor

All CAPEC(s)

CAPEC(s) with Mapped TTPs

Mapped ATT&CK TTPs

• T1562.003 : Impair Command History Logging
  Kill Chain: defense-evasion
• T1574.006 : Dynamic Linker Hijacking
  Kill Chain: persistence
• T1574.007 : Path Interception by PATH Environment Variable
  Kill Chain: persistence
• T1217 : Browser Information Discovery
  Kill Chain: discovery
• T1592 : Gather Victim Host Information
  Kill Chain: reconnaissance
• T1595 : Active Scanning
  Kill Chain: reconnaissance
• T1018 : Remote System Discovery
  Kill Chain: discovery
• T1124 : System Time Discovery
  Kill Chain: discovery
• T1046 : Network Service Discovery
  Kill Chain: discovery
• T1016 : System Network Configuration Discovery
  Kill Chain: discovery
• T1049 : System Network Connections Discovery
  Kill Chain: discovery
• T1590 : Gather Victim Network Information
  Kill Chain: reconnaissance
• T1082 : System Information Discovery
  Kill Chain: discovery
• T1082 : System Information Discovery
  Kill Chain: discovery
• T1083 : File and Directory Discovery
  Kill Chain: discovery
• T1057 : Process Discovery
  Kill Chain: discovery
• T1007 : System Service Discovery
  Kill Chain: discovery
• T1087 : Account Discovery
  Kill Chain: discovery
• T1069 : Permission Groups Discovery
  Kill Chain: discovery
• T1615 : Group Policy Discovery
  Kill Chain: discovery
• T1033 : System Owner/User Discovery
  Kill Chain: discovery
• T1134.001 : Token Impersonation/Theft
  Kill Chain: defense-evasion
• T1550.004 : Web Session Cookie
  Kill Chain: defense-evasion
• T1036.005 : Match Legitimate Resource Name or Location
  Kill Chain: defense-evasion
• T1135 : Network Share Discovery
  Kill Chain: discovery
• T1120 : Peripheral Device Discovery
  Kill Chain: discovery
• T1111 : Multi-Factor Authentication Interception
  Kill Chain: credential-access

Malware

APTs Threat Group Associations

Campaigns

Affected Products

• cpe:2.3:a:e-post_corporation:mail_server:4.10:*:*:*:*:*:*:*
• cpe:2.3:a:e-post_corporation:mail_server:enterprise_4.10:*:*:*:*:*:*:*

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