Vulnerability Name:

CVE-2018-7225

Assigned:2018-02-18
Published:2018-02-18
Updated:2018-06-09
Summary: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.
CVSS v3 Severity:9.8 Critical (CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.6 High (Temporal CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
6.5 Medium (CCN CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)
5.7 Medium (CCN Temporal CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): Low
Availibility (A): None
5.4 Medium (REDHAT CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L)
4.8 Medium (REDHAT Temporal CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:7.5 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
6.4 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): None
Vulnerability Type:CWE-190
CWE-805
References:Source: MISC
Type: VENDOR_ADVISORY
http://www.openwall.com/lists/oss-security/2018/02/18/1

Source: BID
Type: VENDOR_ADVISORY
103107

Source: REDHAT
Type: UNKNOWN
RHSA-2018:1055

Source: XF
Type: UNKNOWN
libbncserver-cve20187225-sec-bypass(139211)

Source: MISC
Type: VENDOR_ADVISORY
https://github.com/LibVNC/libvncserver/issues/218

Source: MLIST
Type: UNKNOWN
[debian-lts-announce] 20180330 [SECURITY] [DLA 1332-1] libvncserver security update

Source: UBUNTU
Type: UNKNOWN
USN-3618-1

Source: DEBIAN
Type: UNKNOWN
DSA-4221

Vulnerable Configuration:Configuration 1:
  • cpe:/a:libvncserver_project:libvncserver:0.9.11:*:*:*:*:*:*:*

  • Configuration RedHat 1:
  • cpe:/o:redhat:enterprise_linux:7:*:*:*:*:*:*:*

  • Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:20187225
    V
    CVE-2018-7225
    2018-07-19
    oval:com.redhat.rhsa:def:20181055
    P
    RHSA-2018:1055: libvncserver security update (Moderate)
    2018-04-10
    oval:com.ubuntu.artful:def:20187225000
    V
    CVE-2018-7225 on Ubuntu 17.10 (artful) - medium.
    2018-02-19
    oval:com.ubuntu.xenial:def:20187225000
    V
    CVE-2018-7225 on Ubuntu 16.04 LTS (xenial) - medium.
    2018-02-19
    oval:com.ubuntu.trusty:def:20187225000
    V
    CVE-2018-7225 on Ubuntu 14.04 LTS (trusty) - medium.
    2018-02-19
    BACK
    libvncserver_project libvncserver 0.9.11