Vulnerability Name:

CVE-2018-19837 (CCN-153721)

Assigned:2018-06-02
Published:2018-06-02
Updated:2019-07-23
Summary:In LibSass prior to 3.5.5, Sass::Eval::operator()(Sass::Binary_Expression*) inside eval.cpp allows attackers to cause a denial-of-service resulting from stack consumption via a crafted sass file, because of certain incorrect parsing of '%' as a modulo operator in parser.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)
5.7 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: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): 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)
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: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-400
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2018-19837

Source: SUSE
Type: UNKNOWN
openSUSE-SU-2019:1791

Source: SUSE
Type: UNKNOWN
openSUSE-SU-2019:1800

Source: SUSE
Type: UNKNOWN
openSUSE-SU-2019:1883

Source: XF
Type: UNKNOWN
libsass-cve201819837-dos(153721)

Source: MISC
Type: Exploit, Third Party Advisory
https://github.com/sass/libsass/commit/210fdff7a65370c2ae24e022a2b35da8c423cc5f

Source: CCN
Type: libsass GIT Repository
AddressSanitizer: stack-overflow in Eval::operator() (eval.cpp:563) #2659

Source: MISC
Type: Patch, Vendor Advisory
https://github.com/sass/libsass/issues/2659

Source: CCN
Type: IBM Security Bulletin 6612791 (Cloud Pak System Software)
Multiple Vulnerabilities in Node.js affect IBM Cloud Pak System.

Vulnerable Configuration:Configuration 1:
  • cpe:/a:sass-lang:libsass:*:*:*:*:*:*:*:* (Version < 3.5.5)

  • Configuration CCN 1:
  • cpe:/a:sass-lang:libsass:3.5.5:*:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:201819837
    V
    CVE-2018-19837
    2022-06-30
    oval:org.opensuse.security:def:112823
    P
    libsass-3_6_5-1-3.6.5-1.2 on GA media (Moderate)
    2022-01-17
    oval:org.opensuse.security:def:93436
    P
    (Moderate)
    2021-12-16
    oval:org.opensuse.security:def:106288
    P
    libsass-3_6_5-1-3.6.5-1.2 on GA media (Moderate)
    2021-10-01
    oval:org.opensuse.security:def:62359
    P
    yast2-buildtools-4.2.7-1.31 on GA media (Moderate)
    2021-08-09
    oval:org.opensuse.security:def:62360
    P
    yast2-multipath-4.2.1-1.74 on GA media (Moderate)
    2021-08-09
    oval:org.opensuse.security:def:63041
    P
    python3-tools-3.6.13-3.78.1 on GA media (Moderate)
    2021-08-09
    oval:org.opensuse.security:def:62383
    P
    containerd-1.3.9-5.29.3 on GA media (Moderate)
    2021-08-09
    oval:org.opensuse.security:def:74294
    P
    Security update for gupnp (Important)
    2021-06-24
    oval:org.opensuse.security:def:62839
    P
    FastCGI-2.4.0-2.23 on GA media (Moderate)
    2021-06-08
    oval:org.opensuse.security:def:63179
    P
    rsyslog-module-gssapi-8.33.1-1.30 on GA media (Moderate)
    2020-12-03
    oval:org.opensuse.security:def:62560
    P
    libkpathsea6-6.2.3-11.8.4 on GA media (Moderate)
    2020-12-03
    oval:org.opensuse.security:def:63405
    P
    apache-commons-fileupload-1.4-1.63 on GA media (Moderate)
    2020-12-03
    oval:org.opensuse.security:def:64228
    P
    conntrack-tools on GA media (Moderate)
    2020-12-01
    oval:org.opensuse.security:def:63972
    P
    Security update for squid (Important)
    2020-12-01
    oval:org.opensuse.security:def:74168
    P
    Security update for tomcat (Important)
    2020-12-01
    oval:org.opensuse.security:def:64074
    P
    Security update for python3 (Important)
    2020-12-01
    oval:org.opensuse.security:def:63732
    P
    Security update for xrdp (Important)
    2020-12-01
    oval:org.opensuse.security:def:64116
    P
    Security update for MozillaFirefox (Important)
    2020-12-01
    oval:org.opensuse.security:def:63866
    P
    Security update for webkit2gtk3 (Important)
    2020-12-01
    oval:org.opensuse.security:def:100149
    P
    Security update for libsass (Moderate)
    2019-08-14
    oval:org.opensuse.security:def:109918
    P
    Security update for libsass (Moderate)
    2019-07-23
    oval:com.ubuntu.disco:def:2018198370000000
    V
    CVE-2018-19837 on Ubuntu 19.04 (disco) - medium.
    2018-12-04
    oval:com.ubuntu.bionic:def:201819837000
    V
    CVE-2018-19837 on Ubuntu 18.04 LTS (bionic) - medium.
    2018-12-04
    oval:com.ubuntu.bionic:def:2018198370000000
    V
    CVE-2018-19837 on Ubuntu 18.04 LTS (bionic) - medium.
    2018-12-04
    oval:com.ubuntu.cosmic:def:201819837000
    V
    CVE-2018-19837 on Ubuntu 18.10 (cosmic) - medium.
    2018-12-04
    oval:com.ubuntu.xenial:def:2018198370000000
    V
    CVE-2018-19837 on Ubuntu 16.04 LTS (xenial) - medium.
    2018-12-04
    oval:com.ubuntu.xenial:def:201819837000
    V
    CVE-2018-19837 on Ubuntu 16.04 LTS (xenial) - medium.
    2018-12-04
    oval:com.ubuntu.cosmic:def:2018198370000000
    V
    CVE-2018-19837 on Ubuntu 18.10 (cosmic) - medium.
    2018-12-04
    BACK
    sass-lang libsass *
    sass-lang libsass 3.5.5