Mozilla Firefox/Thunderbird 16.0.1/16.0.2 HZ-GB-2312 Charset cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability was found in Mozilla Firefox and Thunderbird 16.0.1/16.0.2. It has been classified as problematic. This vulnerability affects unknown code of the component HZ-GB-2312 Charset Handler. The manipulation leads to cross site scripting. This vulnerability is uniquely identified as CVE-2012-4207. The attack is possible to be carried out remotely. Moreover, an exploit is present. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Mozilla Firefox and Thunderbird 16.0.1/16.0.2 (Web Browser). This issue affects an unknown code block of the component HZ-GB-2312 Charset Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The HZ-GB-2312 character-set implementation in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird before 17.0, Thunderbird ESR 10.x before 10.0.11, and SeaMonkey before 2.14 does not properly handle a ~ (tilde) character in proximity to a chunk delimiter, which allows remote attackers to conduct cross-site scripting (XSS) attacks via a crafted document.

The weakness was disclosed 11/20/2012 by Masato Kinugawa (moz_bug_r_a4) (Website). The advisory is shared at ubuntu.com. The public release has been coordinated in cooperation with Mozilla. The identification of this vulnerability is CVE-2012-4207 since 08/08/2012. 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. Technical details are unknown but a private exploit is available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

It is declared as highly functional. The vulnerability scanner Nessus provides a plugin with the ID 63005 (CentOS 5 / 6 : firefox (CESA-2012:1482)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 120702 (Red Hat Update for Xulrunner Firefox (RHSA-2012:1482)).

Upgrading to version 17.0 eliminates this vulnerability. The upgrade is hosted for download at mozilla.org. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (80179), Tenable (63005), SecurityFocus (BID 56632†), OSVDB (87587†) and Secunia (SA51358†). The entries VDB-6971, VDB-6972, VDB-6973 and VDB-6974 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Private
Status: Highly functional

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 63005
Nessus Name: CentOS 5 / 6 : firefox (CESA-2012:1482)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 892583
OpenVAS Name: Debian Security Advisory DSA 2583-1 (iceweasel - several vulnerabilities
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/Thunderbird 17.0

Timelineinfo

08/08/2012 🔍
11/20/2012 +104 days 🔍
11/20/2012 +0 days 🔍
11/20/2012 +0 days 🔍
11/20/2012 +0 days 🔍
11/21/2012 +1 days 🔍
11/21/2012 +0 days 🔍
11/21/2012 +0 days 🔍
11/21/2012 +0 days 🔍
11/23/2012 +2 days 🔍
11/25/2012 +2 days 🔍
04/22/2025 +4531 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: ubuntu.com
Researcher: Masato Kinugawa (moz_bug_r_a4)
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2012-4207 (🔍)
GCVE (CVE): GCVE-0-2012-4207
GCVE (VulDB): GCVE-100-6977

OVAL: 🔍

X-Force: 80179 - Mozilla Firefox, Thunderbird, and SeaMonkey HZ-GB-2312 cross-site scripting, Medium Risk
SecurityFocus: 56632 - Mozilla Firefox, SeaMonkey, and Thunderbird HZ-GB-2312 Cross Site Scripting Vulnerability
Secunia: 51358 - Mozilla Firefox / Thunderbird Multiple Vulnerabilities, Highly Critical
OSVDB: 87587
SecurityTracker: 1027791 - Mozilla Firefox Multiple Bugs Let Remote Users Execute Arbitrary Code and Conduct Cross-Site Scripting Attacks
Vulnerability Center: 37371 - Mozilla Firefox, Thunderbird and SeaMonkey Cross-Site Scripting Vulnerability - CVE-2012-4207, Medium

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 11/23/2012 12:21
Updated: 04/22/2025 23:50
Changes: 11/23/2012 12:21 (55), 04/21/2017 14:46 (41), 04/19/2021 12:57 (3), 10/22/2024 03:51 (15), 04/22/2025 23:50 (2)
Complete: 🔍
Cache ID: 216:D7C:103

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

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