Vulnerability Name:

CVE-2017-11555 (CCN-129319)

Assigned:2017-07-22
Published:2017-07-22
Updated:2017-07-28
Summary:There is an illegal address access in the Eval::operator function in eval.cpp in LibSass 3.4.5. A crafted input will lead to a remote denial of service.
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
5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
4.7 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:L/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): Low
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-20
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2017-11555

Source: CCN
Type: LibSass Web site
Sass: LibSass

Source: CCN
Type: Red Hat Bugzilla – Bug 1471782
There is an illegal address access in eval.cpp of libsass

Source: MISC
Type: Exploit, Issue Tracking, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1471782

Source: XF
Type: UNKNOWN
libsass-cve201711555-dos(129319)

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2017-11555

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:org.opensuse.security:def:201711555
    V
    		CVE-2017-11555
    2019-09-27
    oval:com.ubuntu.xenial:def:2017115550000000
    V
    		CVE-2017-11555 on Ubuntu 16.04 LTS (xenial) - medium.
    2017-07-23
    oval:com.ubuntu.disco:def:2017115550000000
    V
    		CVE-2017-11555 on Ubuntu 19.04 (disco) - medium.
    2017-07-23
    oval:com.ubuntu.bionic:def:2017115550000000
    V
    		CVE-2017-11555 on Ubuntu 18.04 LTS (bionic) - medium.
    2017-07-23
    oval:com.ubuntu.artful:def:201711555000
    V
    		CVE-2017-11555 on Ubuntu 17.10 (artful) - medium.
    2017-07-22
    oval:com.ubuntu.bionic:def:201711555000
    V
    		CVE-2017-11555 on Ubuntu 18.04 LTS (bionic) - medium.
    2017-07-22
    oval:com.ubuntu.cosmic:def:2017115550000000
    V
    		CVE-2017-11555 on Ubuntu 18.10 (cosmic) - medium.
    2017-07-22
    oval:com.ubuntu.cosmic:def:201711555000
    V
    		CVE-2017-11555 on Ubuntu 18.10 (cosmic) - medium.
    2017-07-22
    oval:com.ubuntu.xenial:def:201711555000
    V
    		CVE-2017-11555 on Ubuntu 16.04 LTS (xenial) - medium.
    2017-07-22
    BACK
    libsass libsass 3.4.5
    libsass libsass 3.4.5