Mozilla Network Security Services up to 3.18 TLS State Machine cryptographic issue

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7.0	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Mozilla Network Security Services up to 3.18. It has been classified as critical. This vulnerability affects unknown code of the component TLS State Machine. The manipulation leads to cryptographic issue. This vulnerability is uniquely identified as CVE-2015-2721. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Mozilla Network Security Services up to 3.18 (Web Browser). This issue affects an unknown code block of the component TLS State Machine. The manipulation with an unknown input leads to a cryptographic issue vulnerability. Using CWE to declare the problem leads to CWE-310. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Mozilla Network Security Services (NSS) before 3.19, as used in Mozilla Firefox before 39.0, Firefox ESR 31.x before 31.8 and 38.x before 38.1, Thunderbird before 38.1, and other products, does not properly determine state transitions for the TLS state machine, which allows man-in-the-middle attackers to defeat cryptographic protection mechanisms by blocking messages, as demonstrated by removing a forward-secrecy property by blocking a ServerKeyExchange message, aka a "SMACK SKIP-TLS" issue.

The weakness was disclosed 07/06/2015 by Karthikeyan Bhargavan (Paul) with Mozilla Developers (Website). The advisory is shared at smacktls.com. The identification of this vulnerability is CVE-2015-2721 since 03/25/2015. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1600 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 84575 (Firefox ESR < 31.8 Multiple Vulnerabilities (Mac OS X) (Logjam)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family MacOS X Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196175 (Ubuntu Security Notification for Nss Vulnerabilities (USN-2672-1)).

Upgrading to version 3.19 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (84575), SecurityFocus (BID 75541†) and Vulnerability Center (SBV-50980†). The entries VDB-76278, VDB-76279, VDB-76280 and VDB-76281 are pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Web Browser

Vendor

• Mozilla

Name

• Network Security Services

Version

• 3.0
• 3.1
• 3.2
• 3.3
• 3.4
• 3.5
• 3.6
• 3.7
• 3.8
• 3.9
• 3.10
• 3.11
• 3.12
• 3.13
• 3.14
• 3.15
• 3.16
• 3.17
• 3.18

License

• open-source

Website

• Vendor: https://www.mozilla.org/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Cryptographic issue
CWE: CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 84575
Nessus Name: Firefox ESR < 31.8 Multiple Vulnerabilities (Mac OS X) (Logjam)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 703324
OpenVAS Name: Debian Security Advisory DSA 3324-1 (icedove - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍
Upgrade: Network Security Services 3.19

Timelineinfo

03/25/2015 🔍
07/02/2015 +99 days 🔍
07/02/2015 +0 days 🔍
07/05/2015 +3 days 🔍
07/05/2015 +0 days 🔍
07/06/2015 +1 days 🔍
07/06/2015 +0 days 🔍
10/22/2024 +3396 days 🔍

Sourcesinfo

Vendor: mozilla.org

Advisory: USN-2656-1
Researcher: Karthikeyan Bhargavan (Paul)
Organization: Mozilla Developers
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-2721 (🔍)
GCVE (CVE): GCVE-0-2015-2721
GCVE (VulDB): GCVE-100-76277

OVAL: 🔍

SecurityFocus: 75541 - Mozilla Firefox/Thunderbird Multiple Security Vulnerabilities
SecurityTracker: 1032783
Vulnerability Center: 50980 - Mozilla Firefox, Firefox ESR and Thunderbird Remote Information Disclosure due to NSS Skipping of ServerKeyExchange, Medium

See also: 🔍

Entryinfo

Created: 07/06/2015 10:17
Updated: 10/22/2024 19:44
Changes: 07/06/2015 10:17 (62), 07/03/2017 08:59 (14), 05/23/2022 09:11 (4), 05/23/2022 09:15 (1), 05/23/2022 09:17 (1), 10/22/2024 19:44 (15)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion

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