Vulnerability Name:

CVE-2019-13075 (CCN-166309)

Assigned:2019-05-29
Published:2019-05-29
Updated:2019-07-08
Summary:Tor Browser through 8.5.3 has an information exposure vulnerability. It allows remote attackers to detect the browser's language via vectors involving an IFRAME element, because text in that language is included in the title attribute of a LINK element for a non-HTML page. This is related to a behavior of Firefox before 68.
CVSS v3 Severity:5.3 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
4.6 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): None
Availibility (A): None
5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): None
Availibility (A): None
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
Vulnerability Type:CWE-200
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2019-13075

Source: XF
Type: UNKNOWN
tor-cve201913075-info-disc(166309)

Source: CCN
Type: Hackerone Web site
Detect Tor Browser's language

Source: MISC
Type: Exploit, Issue Tracking, Third Party Advisory
https://hackerone.com/reports/588239

Source: MISC
Type: Vendor Advisory
https://trac.torproject.org/projects/tor/ticket/30657

Source: CCN
Type: Tor Web site
Tor Browser

Vulnerable Configuration:Configuration 1:
  • cpe:/a:torproject:tor_browser:*:*:*:*:*:*:*:* (Version <= 8.5.3)

    • Configuration CCN 1:
  • cpe:/a:torproject:tor_browser:8.5.3:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.cosmic:def:2019130750000000
    V
    		CVE-2019-13075 on Ubuntu 18.10 (cosmic) - negligible.
    2019-06-30
    oval:com.ubuntu.bionic:def:2019130750000000
    V
    		CVE-2019-13075 on Ubuntu 18.04 LTS (bionic) - negligible.
    2019-06-30
    oval:com.ubuntu.xenial:def:2019130750000000
    V
    		CVE-2019-13075 on Ubuntu 16.04 LTS (xenial) - negligible.
    2019-06-30
    oval:com.ubuntu.disco:def:2019130750000000
    V
    		CVE-2019-13075 on Ubuntu 19.04 (disco) - negligible.
    2019-06-30
    BACK
    torproject tor browser *
    torproject tor browser 8.5.3