Vulnerability Name:

CVE-2016-6871 (CCN-123280)

Assigned:2016-08-11
Published:2016-08-11
Updated:2017-02-22
Summary:Integer overflow in bcmath in Facebook HHVM before 3.15.0 allows attackers to have unspecified impact via unknown vectors, which triggers a buffer overflow.
CVSS v3 Severity:9.8 Critical (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.5 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
7.3 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
6.4 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C)
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): Low
Integrity (I): Low
Availibility (A): Low
CVSS v2 Severity:7.5 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
7.5 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
Vulnerability Type:CWE-190
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2016-6871

Source: CCN
Type: oss-sec Mailing List, Thu, 11 Aug 2016 12:49:25 +0200
CVE Requests Facebook HHVM

Source: MLIST
Type: Mailing List, Patch, Third Party Advisory
[oss-security] 20160811 CVE Requests Facebook HHVM

Source: MLIST
Type: Mailing List, Patch, Third Party Advisory
[oss-security] 20160818 Re: CVE Requests Facebook HHVM

Source: XF
Type: UNKNOWN
hhvm-cve20166871-overflow(123280)

Source: CCN
Type: Facebook GIT Repository
Fix buffer overrun due to integer overflow in bcmath

Source: CONFIRM
Type: Patch
https://github.com/facebook/hhvm/commit/c00fc9d3003eb06226b58b6a48555f1456ee2475

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2016-6871

Vulnerable Configuration:Configuration 1:
  • cpe:/a:facebook:hhvm:*:*:*:*:*:*:*:* (Version <= 3.14.5)

    • Configuration CCN 1:
  • cpe:/a:facebook:hhvm:3.12.14:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.artful:def:20166871000
    V
    		CVE-2016-6871 on Ubuntu 17.10 (artful) - medium.
    2017-02-17
    oval:com.ubuntu.xenial:def:201668710000000
    V
    		CVE-2016-6871 on Ubuntu 16.04 LTS (xenial) - medium.
    2017-02-17
    oval:com.ubuntu.bionic:def:20166871000
    V
    		CVE-2016-6871 on Ubuntu 18.04 LTS (bionic) - medium.
    2017-02-17
    oval:com.ubuntu.xenial:def:20166871000
    V
    		CVE-2016-6871 on Ubuntu 16.04 LTS (xenial) - medium.
    2017-02-17
    oval:com.ubuntu.bionic:def:201668710000000
    V
    		CVE-2016-6871 on Ubuntu 18.04 LTS (bionic) - medium.
    2017-02-17
    BACK
    facebook hhvm *
    facebook hhvm 3.12.14