Vulnerability Name:

CVE-2018-11695 (CCN-144311)

Assigned:2018-06-03
Published:2018-06-03
Updated:2020-07-28
Summary:An issue was discovered in LibSass <3.5.3. A NULL pointer dereference was found in the function Sass::Expand::operator which could be leveraged by an attacker to cause a denial of service (application crash) or possibly have unspecified other impact.
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:U/RC:R)
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
3.3 Low (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)
2.9 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
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
1.7 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-476
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2018-11695

Source: CCN
Type: IBM Security Bulletin 794165 (API Connect)
IBM API Connect is impacted by multiple open source software vulnerabilities.

Source: XF
Type: UNKNOWN
libsaas-cve201811695-dos(144311)

Source: CCN
Type: libsass GIT Repository
AddressSanitizer: null pointer dereference (SEGV) in Sass::Expand::operator (libsass/src/expand.cpp:249:28) #2664

Source: MISC
Type: Exploit, Issue Tracking, Patch, Third Party Advisory
https://github.com/sass/libsass/issues/2664

Source: MISC
Type: UNKNOWN
https://github.com/sass/libsass/pull/2631

Source: MISC
Type: UNKNOWN
https://github.com/sass/libsass/releases

Vulnerable Configuration:Configuration 1:
  • cpe:/a:sass-lang:libsass:*:*:*:*:*:*:*:* (Version <= 3.5.2)

    • Configuration CCN 1:
  • cpe:/a:sass-lang:libsaas:3.5.4:*:*:*:*:*:*:*
  • AND
  • cpe:/a:ibm:api_connect:5.0.8.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:api_connect:5.0.8.4:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:api_connect:2018.4.1.2:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.disco:def:2018116950000000
    V
    		CVE-2018-11695 on Ubuntu 19.04 (disco) - medium.
    2018-06-04
    oval:com.ubuntu.artful:def:201811695000
    V
    		CVE-2018-11695 on Ubuntu 17.10 (artful) - medium.
    2018-06-04
    oval:com.ubuntu.cosmic:def:2018116950000000
    V
    		CVE-2018-11695 on Ubuntu 18.10 (cosmic) - medium.
    2018-06-04
    oval:com.ubuntu.bionic:def:201811695000
    V
    		CVE-2018-11695 on Ubuntu 18.04 LTS (bionic) - medium.
    2018-06-04
    oval:com.ubuntu.bionic:def:2018116950000000
    V
    		CVE-2018-11695 on Ubuntu 18.04 LTS (bionic) - medium.
    2018-06-04
    oval:com.ubuntu.cosmic:def:201811695000
    V
    		CVE-2018-11695 on Ubuntu 18.10 (cosmic) - medium.
    2018-06-04
    oval:com.ubuntu.xenial:def:2018116950000000
    V
    		CVE-2018-11695 on Ubuntu 16.04 LTS (xenial) - medium.
    2018-06-04
    oval:com.ubuntu.xenial:def:201811695000
    V
    		CVE-2018-11695 on Ubuntu 16.04 LTS (xenial) - medium.
    2018-06-04
    BACK
    sass-lang libsass *
    sass-lang libsaas 3.5.4
    ibm api connect 5.0.8.0
    ibm api connect 5.0.8.4
    ibm api connect 2018.4.1.2