CVE-2019-10740 - Insufficient Information vulnerability in Roundcube Webmail 1.3.4

Publication

2019-04-07

Last modification

2019-04-09

Summary

In Roundcube Webmail 1.3.4, an attacker in possession of S/MIME or PGP encrypted emails can wrap them as sub-parts within a crafted multipart email. The encrypted part(s) can further be hidden using HTML/CSS or ASCII newline characters. This modified multipart email can be re-sent by the attacker to the intended receiver. If the receiver replies to this (benign looking) email, they unknowingly leak the plaintext of the encrypted message part(s) back to the attacker.

Risk level (CVSS AV:N/AC:M/Au:N/C:N/I:P/A:N)

Medium

4.3

Access Vector

  • Network
  • Adjacent Network
  • Local

Access Complexity

  • Low
  • Medium
  • High

Authentication

  • None
  • Single
  • Multiple

Confident. Impact

  • Complete
  • Partial
  • None

Integrity Impact

  • Complete
  • Partial
  • None

Affected Products

Vendor Product Versions
Roundcube Webmail  1.3.4