Vulnerability Name:

CVE-2017-7396

Assigned:2017-03-27
Published:2017-03-27
Updated:2018-01-12
Summary:In TigerVNC 1.7.1 (CConnection.cxx CConnection::CConnection), an unauthenticated client can cause a small memory leak in the server.
CVSS v3 Severity:7.5 High (CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
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): None
Integrity (I): None
Availibility (A): High
7.5 High (CCN CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (CCN Temporal CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
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): None
Integrity (I): None
Availibility (A): High
3.7 Low (REDHAT CVSS v3 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L)
3.2 Low (REDHAT Temporal CVSS v3 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-399
References:Source: BID
Type: UNKNOWN
97305

Source: REDHAT
Type: UNKNOWN
RHSA-2017:2000

Source: XF
Type: UNKNOWN
tigervnc-cve20177396-dos(124254)

Source: CONFIRM
Type: VENDOR_ADVISORY
https://github.com/TigerVNC/tigervnc/pull/436

Source: CONFIRM
Type: VENDOR_ADVISORY
https://github.com/TigerVNC/tigervnc/pull/436/commits/dccb5f7d776e93863ae10bbff56a45c523c6eeb0

Source: GENTOO
Type: UNKNOWN
GLSA-201801-13

Vulnerable Configuration:Configuration 1:
  • cpe:/a:tigervnc:tigervnc:1.7.1:*:*:*:*:*:*:*

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

  • Configuration CCN 1:
  • cpe:/a:tigervnc:tigervnc:1.7.1:*:*:*:*:*:*:*
  • AND
  • cpe:/a:ibm:powerkvm:2.1:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:powerkvm:3.1:*:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:20177396
    V
    CVE-2017-7396
    2018-09-18
    oval:com.redhat.rhsa:def:20172000
    P
    RHSA-2017:2000: tigervnc and fltk security, bug fix, and enhancement update (Moderate)
    2017-08-01
    oval:com.ubuntu.artful:def:20177396000
    V
    CVE-2017-7396 on Ubuntu 17.10 (artful) - medium.
    2017-03-31
    oval:com.ubuntu.bionic:def:20177396000
    V
    CVE-2017-7396 on Ubuntu 18.04 LTS (bionic) - medium.
    2017-03-31
    BACK
    tigervnc tigervnc 1.7.1
    tigervnc tigervnc 1.7.1
    ibm powerkvm 2.1
    ibm powerkvm 3.1