Mozilla Firefox 41 Reader Mode Content Security Policy cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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8.5$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Mozilla Firefox 41. This vulnerability affects unknown code of the component Reader Mode. This manipulation causes cross site scripting (Content Security Policy). This vulnerability is tracked as CVE-2015-4518. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Mozilla Firefox 41 (Web Browser). It has been declared as critical. Affected by this vulnerability is an unknown code of the component Reader Mode. The manipulation with an unknown input leads to a cross site scripting vulnerability (Content Security Policy). The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was disclosed 11/03/2015 as MFSA 2015-11 as confirmed security advisory (Website). It is possible to read the advisory at mozilla.org. This vulnerability is known as CVE-2015-4518 since 06/10/2015. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 86955 (FreeBSD : mozilla -- multiple vulnerabilities (9d04936c-75f1-4a2c-9ade-4c1708be5df9)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 168223 (OpenSuSE Security Update for MozillaFirefox, mozilla-nspr, (openSUSE-SU-2015:1942-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (107792), Tenable (86955), SecurityFocus (BID 77412†) and Vulnerability Center (SBV-54168†). The entries VDB-69222, VDB-69223, VDB-78498 and VDB-79024 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 8.5

VulDB Base Score: 9.8
VulDB Temp Score: 8.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: Content Security Policy
Class: Cross site scripting / Content Security Policy
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 86955
Nessus Name: FreeBSD : mozilla -- multiple vulnerabilities (9d04936c-75f1-4a2c-9ade-4c1708be5df9)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 803059
OpenVAS Name: Mozilla Firefox Multiple Vulnerabilities - Nov15 (Windows)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

06/10/2015 🔍
11/03/2015 +146 days 🔍
11/03/2015 +0 days 🔍
11/03/2015 +0 days 🔍
11/04/2015 +1 days 🔍
11/04/2015 +0 days 🔍
11/05/2015 +1 days 🔍
11/20/2015 +15 days 🔍
06/26/2022 +2410 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: MFSA 2015-11
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-4518 (🔍)
GCVE (CVE): GCVE-0-2015-4518
GCVE (VulDB): GCVE-100-79027
X-Force: 107792 - Mozilla Firefox Reader mode security bypass
SecurityFocus: 77412
SecurityTracker: 1034069
Vulnerability Center: 54168 - Mozilla Firefox before 42 Remote XSS via CSP Protections - CVE-2015-4518, Medium

See also: 🔍

Entryinfo

Created: 11/04/2015 11:09
Updated: 06/26/2022 09:05
Changes: 11/04/2015 11:09 (57), 03/10/2018 11:46 (19), 06/26/2022 09:05 (4)
Complete: 🔍
Cache ID: 216::103

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