CVE-2017-16651

Roundcube Webmail: File Disclosure

As of , CVE-2017-16651 in Roundcube Webmail is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch this week.

Exploited
Yes: CISA listed it on 3 November 2021
US federal deadline
3 May 2022181 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
Not known to CISA
EPSS score
0.46Higher than 98% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
EPSS when listed
Not availableCISA listed it before 4 February 2022, where the EPSS files we read begin.
Public exploit
1 Metasploit module
Fix
No vendor link in CISA's entry

What CISA says to do

Apply updates per vendor instructions.

CISA's required action

What the flaw is

Roundcube Webmail contains a file disclosure vulnerability caused by insufficient input validation in conjunction with file-based attachment plugins, which are used by default.

CISA's description

Roundcube Webmail before 1.1.10, 1.2.x before 1.2.7, and 1.3.x before 1.3.3 allows unauthorized access to arbitrary files on the host's filesystem, including configuration files, as exploited in the wild in November 2017. The attacker must be able to authenticate at the target system with a valid username/password as the attack requires an active session. The issue is related to file-based attachment plugins and _task=settings&_action=upload-display&_from=timezone requests.

The CVE record's description, from mitre

CVE published
9 November 2017
Assigned by
mitre
CVSS
7.8 High (CVSS 3.1, from CISA-ADP)
CWE-552
Files or Directories Accessible to External Parties
CISA SSVC, exploitation
active
CISA SSVC, automatable
no
CISA SSVC, technical impact
total

Timeline

  1. The CVE record was published.
  2. CISA added it to its list of exploited vulnerabilities.
  3. The US federal deadline to fix it.

Public exploits

Facts from Metasploit's module list and Exploit-DB's index; we never copy exploit code.

  • Metasploit: Roundcube TimeZone Authenticated File Disclosureauxiliary module, rank normal

Roundcube Webmail: other exploited entries

VulnerabilityProductOur groupListedDeadlineEPSS
CVE-2020-12641Remote Code ExecutionRoundcube Roundcube WebmailPatch this weekEPSS 0.840.84
CVE-2021-44026SQL InjectionRoundcube Roundcube WebmailPatch this weekEPSS 0.700.70
CVE-2020-35730Cross-Site Scripting (XSS)Roundcube Roundcube WebmailPatch soon0.33

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