vpopmail contains a flaw that may allow a malicious user to bypass certain security restrictions. The issue is triggered due to an error within the handling of SMTP AUTH and APOP password authentication. It is possible that the flaw may allow an attacker to authenticate to the mail server using a blank password resulting in a loss of confidentiality.
Classification
Location:
Remote / Network Access
Attack Type:
Cryptographic,
Information Disclosure,
Input Manipulation
Impact:
Loss of Confidentiality
Exploit:
Exploit Public
Disclosure:
OSVDB Verified
Technical
cleartext password authentication must be enabled and the victim account must not have a cleartext password set.
Solution
Upgrade to version 5.4.16 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.
This product uses the Daylife API but is not endorsed or certified by Daylife.
This section lists the latest news and blogs found via the daylife API (and for older items, the technorati API), which mention or otherwise discuss this vulnerability.