Mozilla Firefox up to 37.0.0 HTTP/2 Alt-Svc Header input validation

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.7$0-$5k0.00

A vulnerability, which was classified as critical, has been found in Mozilla Firefox up to 37.0.0 (Web Browser). This issue affects some unknown functionality of the component HTTP/2 Alt-Svc Header Handler. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, and integrity.

The weakness was disclosed 04/03/2015 by Muneaki Nishimura as MFSA 2015-44 as confirmed security advisory (Website). The advisory is shared at mozilla.org. The identification of this vulnerability is CVE-2015-0799 since 01/07/2015. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 82651 (openSUSE Security Update : MozillaFirefox / MozillaThunderbird / mozilla-nspr (openSUSE-2015-290)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 167716 (OpenSuSE Security Update for MozillaFirefox, (openSUSE-SU-2015:0677-1)).

Upgrading to version 37.0.1 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The best possible mitigation is suggested to be patching the affected component. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (102056) and Tenable (82651). bugzilla.mozilla.org is providing further details. The entry 74656 is pretty similar.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 4.7

VulDB Base Score: 5.4
VulDB Temp Score: 4.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Dayunlockunlockunlockunlock
Todayunlockunlockunlockunlock

Nessus ID: 82651
Nessus Name: openSUSE Security Update : MozillaFirefox / MozillaThunderbird / mozilla-nspr (openSUSE-2015-290)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 802212
OpenVAS Name: Mozilla Firefox SSL Certificate Verification Bypass Vulnerability- Apr15 (Windows)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Upgrade: Firefox 37.0.1

Timelineinfo

01/07/2015 🔍
04/03/2015 +86 days 🔍
04/03/2015 +0 days 🔍
04/03/2015 +0 days 🔍
04/03/2015 +0 days 🔍
04/07/2015 +4 days 🔍
04/07/2015 +0 days 🔍
04/07/2015 +0 days 🔍
04/08/2015 +1 days 🔍
04/09/2015 +1 days 🔍
05/02/2022 +2580 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: MFSA 2015-44
Researcher: Muneaki Nishimura
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-0799 (🔍)
X-Force: 102056 - Mozilla Firefox HTTP Alternative Services security bypass
SecurityTracker: 1032030 - Mozilla Firefox HTTP/2 Alt-Svc Header Processing Bug Lets Remote Users Bypass Certificate Verification
Vulnerability Center: 49382 - Mozilla Firefox <37.0.1 Remote Bypass Restrictions via the HTTP/2 Alt-Svc Header, Medium
SecurityFocus: 73905 - Mozilla Firefox SSL Certificate Verification 'CVE-2015-0799' Security Bypass Vulnerability

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 04/07/2015 11:47
Updated: 05/02/2022 18:21
Changes: 04/07/2015 11:47 (79), 01/31/2018 09:55 (7), 05/02/2022 18:14 (3), 05/02/2022 18:21 (1)
Complete: 🔍

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Interested in the pricing of exploits?

See the underground prices here!