Vulnerability Name:

CVE-2017-7770 (CCN-127251)

Assigned:2017-06-13
Published:2017-06-13
Updated:2018-08-13
Summary:A mechanism where when a new tab is loaded through JavaScript events, if fullscreen mode is then entered, the addressbar will not be rendered. This would allow a malicious site to displayed a spoofed addressbar, showing the location of an arbitrary website instead of the one loaded.
Note: this issue only affects Firefox for Android. Desktop Firefox is unaffected. This vulnerability affects Firefox < 54.
CVSS v3 Severity:5.9 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N)
5.2 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): High
Availibility (A): None
4.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N)
3.8 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/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): Low
Availibility (A): None
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
4.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
Vulnerability Type:CWE-20
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2017-7770

Source: BID
Type: Third Party Advisory, VDB Entry
99049

Source: CCN
Type: BID-99049
Mozilla Firefox for Android CVE-2017-7770 AddressBar URI Spoofing Vulnerability

Source: SECTRACK
Type: Third Party Advisory, VDB Entry
1038689

Source: CONFIRM
Type: Issue Tracking, Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1317242

Source: XF
Type: UNKNOWN
firefox-cve20177770-spoofing(127251)

Source: CCN
Type: Mozilla Foundation Security Advisory 2017-15
Security vulnerabilities fixed in Firefox 54

Source: CCN
Type: Mozilla Foundation Security Advisory 2017-16
Security vulnerabilities fixed in Firefox ESR 52.2

Source: CONFIRM
Type: Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-15/

Vulnerable Configuration:Configuration 1:
  • cpe:/a:mozilla:firefox:*:*:*:*:*:*:*:* (Version < 54.0)
  • AND
  • cpe:/o:google:android:-:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:mozilla:firefox:53.0:*:*:*:*:*:*:*
  • OR cpe:/a:mozilla:firefox_esr:52.1.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.trusty:def:20177770000
    V
    		CVE-2017-7770 on Ubuntu 14.04 LTS (trusty) - medium.
    2018-06-11
    oval:com.ubuntu.xenial:def:20177770000
    V
    		CVE-2017-7770 on Ubuntu 16.04 LTS (xenial) - medium.
    2018-06-11
    oval:com.ubuntu.xenial:def:201777700000000
    V
    		CVE-2017-7770 on Ubuntu 16.04 LTS (xenial) - medium.
    2018-06-11
    BACK
    mozilla firefox *
    google android -
    mozilla firefox 53.0
    mozilla firefox esr 52.1.0