Vulnerability CVE-2017-7813

Vulnerability Name:

CVE-2017-7813 (CCN-132752)

Assigned:

2017-09-28

Published:

2017-09-28

Updated:

2019-10-03

Summary:

Inside the JavaScript parser, a cast of an integer to a narrower type can result in data read from outside the buffer being parsed. This usually results in a non-exploitable crash, but can leak a limited amount of information from memory if it matches JavaScript identifier syntax. This vulnerability affects Firefox < 56.

CVSS v3 Severity:

8.2 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H)
7.1 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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): Low Integrity (I): None Availibility (A): High

6.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
5.7 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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): Required
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): High

CVSS v2 Severity:

6.4 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:N/A:P)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Authentication (Au): None
Impact Metrics:	Confidentiality (C): Partial Integrity (I): None Availibility (A): Partial

6.8 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:N/I:N/A:C)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Complete

Vulnerability Type:

CWE-125
CWE-704

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2017-7813

Source: BID
Type: Third Party Advisory, VDB Entry
101057

Source: CCN
Type: BID-101057
Mozilla Firefox Multiple Security Vulnerabilities

Source: SECTRACK
Type: Third Party Advisory, VDB Entry
1039465

Source: CONFIRM
Type: Exploit, Issue Tracking
https://bugzilla.mozilla.org/show_bug.cgi?id=1383951

Source: XF
Type: UNKNOWN
firefox-cve20177813-dos(132752)

Source: CCN
Type: Mozilla Foundation Security Advisory 2017-21
Security vulnerabilities fixed in Firefox 56

Source: CONFIRM
Type: Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-21/

Vulnerable Configuration:

Configuration 1:

cpe:/a:mozilla:firefox:*:*:*:*:*:*:*:* (Version <= 55.0.3)

Configuration CCN 1:

cpe:/a:mozilla:firefox:55.0:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:org.opensuse.security:def:20177813	V	CVE-2017-7813	2022-06-30
oval:org.opensuse.security:def:111899	P	MozillaFirefox-92.0-1.2 on GA media (Moderate)	2022-01-17
oval:org.opensuse.security:def:105476	P	MozillaFirefox-92.0-1.2 on GA media (Moderate)	2021-10-01
oval:com.ubuntu.bionic:def:201778130000000	V	CVE-2017-7813 on Ubuntu 18.04 LTS (bionic) - medium.	2018-06-11
oval:com.ubuntu.artful:def:20177813000	V	CVE-2017-7813 on Ubuntu 17.10 (artful) - medium.	2018-06-11
oval:com.ubuntu.xenial:def:20177813000	V	CVE-2017-7813 on Ubuntu 16.04 LTS (xenial) - medium.	2018-06-11
oval:com.ubuntu.xenial:def:201778130000000	V	CVE-2017-7813 on Ubuntu 16.04 LTS (xenial) - medium.	2018-06-11
oval:com.ubuntu.bionic:def:20177813000	V	CVE-2017-7813 on Ubuntu 18.04 LTS (bionic) - medium.	2018-06-11
oval:com.ubuntu.disco:def:201778130000000	V	CVE-2017-7813 on Ubuntu 19.04 (disco) - medium.	2018-06-11
oval:com.ubuntu.cosmic:def:20177813000	V	CVE-2017-7813 on Ubuntu 18.10 (cosmic) - medium.	2018-06-11
oval:com.ubuntu.cosmic:def:201778130000000	V	CVE-2017-7813 on Ubuntu 18.10 (cosmic) - medium.	2018-06-11
oval:com.ubuntu.trusty:def:20177813000	V	CVE-2017-7813 on Ubuntu 14.04 LTS (trusty) - medium.	2018-06-11

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