Vulnerability Name:

CVE-2019-18799 (CCN-171277)

Assigned:2019-10-07
Published:2019-10-07
Updated:2019-11-08
Summary:LibSass before 3.6.3 allows a NULL pointer dereference in Sass::Parser::parseCompoundSelector in parser_selectors.cpp.
CVSS v3 Severity:6.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
5.9 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:P/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): None
Integrity (I): None
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)
3.0 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:P/RL:O/RC:C)
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:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
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-2019-18799

Source: XF
Type: UNKNOWN
libsass-cve201918799-dos(171277)

Source: CCN
Type: LibSass GIT Repository
SEGV in sassc #3001

Source: MISC
Type: Exploit, Third Party Advisory
https://github.com/sass/libsass/issues/3001

Source: CCN
Type: IBM Security Bulletin 6414343 (Security Verify Information Queue)
IBM Security Verify Information Queue uses a Node.js package with multiple vulnerabilities

Vulnerable Configuration:Configuration 1:
  • cpe:/a:sass-lang:libsass:*:*:*:*:*:*:*:* (Version < 3.6.3)

    • Configuration CCN 1:
  • cpe:/a:ibm:security_verify_information_queue:1.0.6:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:security_verify_information_queue:1.0.7:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    sass-lang libsass *
    ibm security verify information queue 1.0.6
    ibm security verify information queue 1.0.7