Mozilla Firefox up to 51.x FTP Response Code 7pk security

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Mozilla Firefox up to 51.x. The affected element is an unknown function of the component FTP Response Code Handler. Performing a manipulation results in 7pk security. This vulnerability is known as CVE-2017-5405. Remote exploitation of the attack is possible. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Mozilla Firefox up to 51.x (Web Browser). This affects some unknown functionality of the component FTP Response Code Handler. The manipulation with an unknown input leads to a 7pk security vulnerability. CWE is classifying the issue as CWE-254. This is going to have an impact on confidentiality, and availability. The summary by CVE is:

Certain response codes in FTP connections can result in the use of uninitialized values for ports in FTP operations. This vulnerability affects Firefox < 52, Firefox ESR < 45.8, Thunderbird < 52, and Thunderbird < 45.8.

The bug was discovered 03/07/2017. The weakness was published 03/07/2017 as MFSA 2017-05 as confirmed security advisory (Website). The advisory is shared at mozilla.org. This vulnerability is uniquely identified as CVE-2017-5405 since 01/13/2017. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1211 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 101437 (Virtuozzo 6 : thunderbird (VZLSA-2017-0498)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Virtuozzo Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 157398 (Oracle Enterprise Linux Security Update for firefox (ELSA-2017-0461)).

Upgrading to version 52 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 Tenable (101437), SecurityFocus (BID 96693†) and SecurityTracker (ID 1037966†). Similar entries are available at VDB-97756, VDB-97757, VDB-97758 and VDB-97759. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.4
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: 7pk security
CWE: CWE-254
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 101437
Nessus Name: Virtuozzo 6 : thunderbird (VZLSA-2017-0498)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 881932
OpenVAS Name: CentOS Update for thunderbird CESA-2017:0498 centos7
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: 🔍

Upgrade: Firefox 52

Timelineinfo

01/13/2017 🔍
03/07/2017 +53 days 🔍
03/07/2017 +0 days 🔍
03/07/2017 +0 days 🔍
03/07/2017 +0 days 🔍
03/08/2017 +1 days 🔍
03/10/2017 +2 days 🔍
07/13/2017 +125 days 🔍
06/11/2018 +332 days 🔍
11/26/2025 +2725 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: MFSA 2017-05
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-5405 (🔍)
GCVE (CVE): GCVE-0-2017-5405
GCVE (VulDB): GCVE-100-97785

OVAL: 🔍

SecurityFocus: 96693 - Mozilla Firefox and Thunderbird Multiple Security Vulnerabilities
OSVDB: - CVE-2017-5405 - Mozilla - Firefox - Security Bypass Issue
SecurityTracker: 1037966

See also: 🔍

Entryinfo

Created: 03/10/2017 08:14
Updated: 11/26/2025 02:54
Changes: 03/10/2017 08:14 (81), 08/18/2020 16:12 (6), 11/26/2025 02:54 (17)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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