National Vulnerability Database

National Vulnerability Database

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    Vulnerabilities Detail

CVE-2018-7225 Detail

Current Description

An issue was discovered in LibVNCServer through 0.9.11. rfbProcessClientNormalMessage() in rfbserver.c does not sanitize msg.cct.length, leading to access to uninitialized and potentially sensitive data or possibly unspecified other impact (e.g., an integer overflow) via specially crafted VNC packets.

Source:  MITRE
Description Last Modified:  02/19/2018
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 9.8 CRITICAL
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H (V3 legend)
Impact Score: 5.9
Exploitability Score: 3.9

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 7.5 HIGH
Vector: (AV:N/AC:L/Au:N/C:P/I:P/A:P) (V2 legend)
Impact Subscore: 6.4
Exploitability Subscore: 10.0

Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): Partial
Availability (A): Partial
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.openwall.com/lists/oss-security/2018/02/18/1 Exploit Mailing List Third Party Advisory
http://www.securityfocus.com/bid/103107 Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:1055
https://github.com/LibVNC/libvncserver/issues/218 Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/03/msg00035.html
https://usn.ubuntu.com/3618-1/
https://www.debian.org/security/2018/dsa-4221

Technical Details

Vulnerability Type (View All)

  • Integer Overflow or Wraparound (CWE-190)

Change History

6 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-7225
NVD Published Date:
02/19/2018
NVD Last Modified:
06/09/2018