Vulnerability CVE-2018-6335

Vulnerability Name:

CVE-2018-6335 (CCN-155029)

Assigned:

2018-05-04

Published:

2018-05-04

Updated:

2019-10-09

Summary:

A Malformed h2 frame can cause 'std::out_of_range' exception when parsing priority meta data. This behavior can lead to denial-of-service. This affects all supported versions of HHVM (3.25.2, 3.24.6, and 3.21.10 and below) when using the proxygen server to handle HTTP2 requests.

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)
6.5 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: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): 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)
4.6 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: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): 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-2018-6335

Source: XF
Type: UNKNOWN
hhvm-cve20186335-dos(155029)

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/facebook/hhvm/commit/4cb57dd753a339654ca464c139db9871fe961d56

Source: CCN
Type: HHVM Blog, May 04, 2018
HHVM 3.25.3, HHVM 3.24.7, and 3.21.11

Source: MISC
Type: Vendor Advisory
https://hhvm.com/blog/2018/05/04/hhvm-3.25.3.html

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2018-6335

Vulnerable Configuration:

Configuration 1:

cpe:/a:facebook:hhvm:*:*:*:*:*:*:*:* (Version <= 3.21.10)

OR cpe:/a:facebook:hhvm:3.24.6:*:*:*:*:*:*:*

OR cpe:/a:facebook:hhvm:3.25.2:*:*:*:*:*:*:*

Configuration CCN 1:

cpe:/a:facebook:hhvm:3.25.2:*:*:*:*:*:*:*

OR cpe:/a:facebook:hhvm:3.24.6:*:*:*:*:*:*:*

OR cpe:/a:facebook:hhvm:3.21.10:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.ubuntu.xenial:def:201863350000000	V	CVE-2018-6335 on Ubuntu 16.04 LTS (xenial) - untriaged.	2018-12-31
oval:com.ubuntu.bionic:def:20186335000	V	CVE-2018-6335 on Ubuntu 18.04 LTS (bionic) - untriaged.	2018-12-31
oval:com.ubuntu.xenial:def:20186335000	V	CVE-2018-6335 on Ubuntu 16.04 LTS (xenial) - untriaged.	2018-12-31
oval:com.ubuntu.bionic:def:201863350000000	V	CVE-2018-6335 on Ubuntu 18.04 LTS (bionic) - untriaged.	2018-12-31
oval:com.ubuntu.artful:def:20186335000	V	CVE-2018-6335 on Ubuntu 17.10 (artful) - untriaged.	2018-05-08

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