Vulnerability Name:

CVE-2017-12964 (CCN-130729)

Assigned:2017-08-17
Published:2017-08-17
Updated:2019-10-03
Summary:There is a stack consumption issue in LibSass 3.4.5 that is triggered in the function Sass::Eval::operator() in eval.cpp. It will lead to a remote denial of service attack.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.6 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:7.8 High (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
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
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-674
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2017-12964

Source: CCN
Type: LibSass Web site
LibSass

Source: CCN
Type: Red Hat Bugzilla – Bug 1482397
There is a stack-overflow in the sassc of libsass library. This vulnerability is triggered in function Sass::Eval::operator()

Source: MISC
Type: Issue Tracking, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1482397

Source: XF
Type: UNKNOWN
libsass-cve201712964-dos(130729)

Vulnerable Configuration:Configuration 1:
  • cpe:/a:libsass:libsass:3.4.5:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:libsass:libsass:3.4.5:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.disco:def:2017129640000000
    V
    		CVE-2017-12964 on Ubuntu 19.04 (disco) - low.
    2017-08-18
    oval:com.ubuntu.artful:def:201712964000
    V
    		CVE-2017-12964 on Ubuntu 17.10 (artful) - low.
    2017-08-18
    oval:com.ubuntu.cosmic:def:2017129640000000
    V
    		CVE-2017-12964 on Ubuntu 18.10 (cosmic) - low.
    2017-08-18
    oval:com.ubuntu.bionic:def:201712964000
    V
    		CVE-2017-12964 on Ubuntu 18.04 LTS (bionic) - low.
    2017-08-18
    oval:com.ubuntu.bionic:def:2017129640000000
    V
    		CVE-2017-12964 on Ubuntu 18.04 LTS (bionic) - low.
    2017-08-18
    oval:com.ubuntu.cosmic:def:201712964000
    V
    		CVE-2017-12964 on Ubuntu 18.10 (cosmic) - low.
    2017-08-18
    oval:com.ubuntu.xenial:def:2017129640000000
    V
    		CVE-2017-12964 on Ubuntu 16.04 LTS (xenial) - low.
    2017-08-18
    oval:com.ubuntu.xenial:def:201712964000
    V
    		CVE-2017-12964 on Ubuntu 16.04 LTS (xenial) - low.
    2017-08-18
    BACK
    libsass libsass 3.4.5
    libsass libsass 3.4.5