Vulnerability Name:

CVE-2019-11756 (CCN-172454)

Assigned:2019-12-03
Published:2019-12-03
Updated:2020-01-13
Summary:Improper refcounting of soft token session objects could cause a use-after-free and crash (likely limited to a denial of service). This vulnerability affects Firefox < 71.
CVSS v3 Severity:8.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
7.7 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/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): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
8.8 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
7.7 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/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): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
7.1 High (REDHAT CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H)
6.2 Medium (REDHAT Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:6.8 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
9.0 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-416
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2019-11756

Source: CONFIRM
Type: Issue Tracking, Permissions Required
https://bugzilla.mozilla.org/show_bug.cgi?id=1508776

Source: XF
Type: UNKNOWN
firefox-cve201911756-code-exec(172454)

Source: CCN
Type: IBM Security Bulletin 6403293 (MQ Appliance)
IBM MQ Appliance is affected by multiple nss and nspr vulnerabilities

Source: CCN
Type: IBM Security Bulletin 6831647 (Security Guardium)
IBM Security Guardium is affected by multiple vulnerabilities

Source: CCN
Type: Mozilla Foundation Security Advisory 2019-36
Security Vulnerabilities fixed in - Firefox 71

Source: CONFIRM
Type: Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-36/

Vulnerable Configuration:Configuration 1:
  • cpe:/a:mozilla:firefox:*:*:*:*:*:*:*:* (Version < 71.0)

    • Configuration RedHat 1:
  • cpe:/a:redhat:enterprise_linux:8:*:*:*:*:*:*:*

    • Configuration RedHat 2:
  • cpe:/a:redhat:enterprise_linux:8::appstream:*:*:*:*:*

    • Configuration RedHat 3:
  • cpe:/o:redhat:enterprise_linux:7:*:*:*:*:*:*:*

    • Configuration RedHat 4:
  • cpe:/o:redhat:enterprise_linux:7::client:*:*:*:*:*

    • Configuration RedHat 5:
  • cpe:/o:redhat:enterprise_linux:7::computenode:*:*:*:*:*

    • Configuration RedHat 6:
  • cpe:/o:redhat:enterprise_linux:7::server:*:*:*:*:*

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

    • Configuration CCN 1:
  • cpe:/a:mozilla:firefox:70:*:*:*:*:*:*:*
  • AND
  • cpe:/a:ibm:security_guardium:10.5:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:mq_appliance:9.1.0.0:*:*:*:continuous_delivery:*:*:*
  • OR cpe:/a:ibm:mq_appliance:9.1.0.1:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:mq_appliance:9.1.1:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:security_guardium:10.6:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:mq_appliance:9.1.0.2:*:*:*:continuous_delivery:*:*:*
  • OR cpe:/a:ibm:mq_appliance:9.1.2:*:*:*:continuous_delivery:*:*:*
  • OR cpe:/a:ibm:mq_appliance:9.1.0.3:*:*:*:continuous_delivery:*:*:*
  • OR cpe:/a:ibm:mq_appliance:9.1.3:*:*:*:continuous_delivery:*:*:*
  • OR cpe:/a:ibm:security_guardium:11.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:security_guardium:11.1:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:mq_appliance:9.1.0.4:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:mq_appliance:9.1.4:*:*:*:continuous_delivery:*:*:*
  • OR cpe:/a:ibm:mq_appliance:9.1.5:*:*:*:continuous_delivery:*:*:*
  • OR cpe:/a:ibm:security_guardium:11.2:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:mq_appliance:9.1.0.6:*:*:*:lts:*:*:*
  • OR cpe:/a:ibm:mq_appliance:9.2.0.0:*:*:*:continuous_delivery:*:*:*
  • OR cpe:/a:ibm:mq_appliance:9.2.0.1:*:*:*:continuous_delivery:*:*:*
  • OR cpe:/a:ibm:security_guardium:11.3:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:security_guardium:11.4:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:111899
    P
    		MozillaFirefox-92.0-1.2 on GA media (Moderate)
    2022-01-17
    oval:org.opensuse.security:def:105476
    P
    		MozillaFirefox-92.0-1.2 on GA media (Moderate)
    2021-10-01
    oval:com.redhat.rhsa:def:20204076
    P
    		RHSA-2020:4076: nss and nspr security, bug fix, and enhancement update (Moderate)
    2020-09-29
    oval:com.redhat.rhsa:def:20203280
    P
    		RHSA-2020:3280: nss and nspr security, bug fix, and enhancement update (Moderate)
    2020-08-03
    oval:com.ubuntu.disco:def:2019117560000000
    V
    		CVE-2019-11756 on Ubuntu 19.04 (disco) - medium.
    2020-01-08
    oval:com.ubuntu.bionic:def:2019117560000000
    V
    		CVE-2019-11756 on Ubuntu 18.04 LTS (bionic) - medium.
    2020-01-08
    oval:com.ubuntu.xenial:def:2019117560000000
    V
    		CVE-2019-11756 on Ubuntu 16.04 LTS (xenial) - medium.
    2020-01-08
    BACK
    mozilla firefox *
    mozilla firefox 70
    ibm security guardium 10.5
    ibm mq appliance 9.1.0.0
    ibm mq appliance 9.1.0.1
    ibm mq appliance 9.1.1
    ibm security guardium 10.6
    ibm mq appliance 9.1.0.2
    ibm mq appliance 9.1.2
    ibm mq appliance 9.1.0.3
    ibm mq appliance 9.1.3
    ibm security guardium 11.0
    ibm security guardium 11.1
    ibm mq appliance 9.1.0.4
    ibm mq appliance 9.1.4
    ibm mq appliance 9.1.5
    ibm security guardium 11.2
    ibm mq appliance 9.1.0.6
    ibm mq appliance 9.2.0.0
    ibm mq appliance 9.2.0.1
    ibm security guardium 11.3
    ibm security guardium 11.4