Vulnerability Name:

CVE-2018-19756 (CCN-153564)

Assigned:2018-11-13
Published:2018-11-13
Updated:2018-12-26
Summary:There is a heap-based buffer over-read at stb_image.h (function: stbi__tga_load) in libsixel 1.8.2 that will cause a denial of service.
CVSS v3 Severity:5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
4.9 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/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): 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: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-125
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2018-19756

Source: CCN
Type: Red Hat Bugzilla – Bug 1649198
There is a heap-buffer-overflow at stb_image.h:5580(function:stbi__tga_load) in libsixel latest version that will cause serious impact.

Source: MISC
Type: Exploit, Issue Tracking, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1649198

Source: XF
Type: UNKNOWN
libsixel-cve201819756-dos(153564)

Source: CCN
Type: libsixel GIT Repository
libsixel

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2018-19756

Vulnerable Configuration:Configuration 1:
  • cpe:/a:libsixel_project:libsixel:1.8.2:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:libsixel_project:libsixel:1.8.2:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.bionic:def:2018197560000000
    V
    		CVE-2018-19756 on Ubuntu 18.04 LTS (bionic) - medium.
    2018-11-30
    oval:com.ubuntu.xenial:def:2018197560000000
    V
    		CVE-2018-19756 on Ubuntu 16.04 LTS (xenial) - medium.
    2018-11-30
    oval:com.ubuntu.disco:def:2018197560000000
    V
    		CVE-2018-19756 on Ubuntu 19.04 (disco) - medium.
    2018-11-30
    oval:com.ubuntu.bionic:def:201819756000
    V
    		CVE-2018-19756 on Ubuntu 18.04 LTS (bionic) - medium.
    2018-11-29
    oval:com.ubuntu.cosmic:def:201819756000
    V
    		CVE-2018-19756 on Ubuntu 18.10 (cosmic) - medium.
    2018-11-29
    oval:com.ubuntu.xenial:def:201819756000
    V
    		CVE-2018-19756 on Ubuntu 16.04 LTS (xenial) - medium.
    2018-11-29
    oval:com.ubuntu.cosmic:def:2018197560000000
    V
    		CVE-2018-19756 on Ubuntu 18.10 (cosmic) - medium.
    2018-11-29
    BACK
    libsixel_project libsixel 1.8.2
    libsixel_project libsixel 1.8.2