fribidi PyFriBidi 0.10.9 fribidi_utf8_to_unicode memory corruption

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.
5.1$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in fribidi PyFriBidi 0.10.9. The affected element is the function fribidi_utf8_to_unicode. Such manipulation leads to memory corruption. This vulnerability is uniquely identified as CVE-2012-1176. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in fribidi PyFriBidi 0.10.9. It has been rated as critical. Affected by this issue is the function fribidi_utf8_to_unicode. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is availability. CVE summarizes:

Buffer overflow in the fribidi_utf8_to_unicode function in PyFriBidi before 0.11.0 allows remote attackers to cause a denial of service (application crash) via a 4-byte utf-8 sequence.

The weakness was disclosed 08/26/2012 (Website). The advisory is shared for download at github.com. This vulnerability is handled as CVE-2012-1176 since 02/14/2012. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 58337 (Fedora 17 : pyfribidi-0.11.0-1.fc17 (2012-3513)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l.

Upgrading to version 0.10.9 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (74001), Tenable (58337) and SecurityFocus (BID 52451†). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 58337
Nessus Name: Fedora 17 : pyfribidi-0.11.0-1.fc17 (2012-3513)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 864309
OpenVAS Name: Fedora Update for pyfribidi FEDORA-2012-3513
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: PyFriBidi 0.10.9
Patch: github.com

Timelineinfo

02/14/2012 🔍
03/10/2012 +25 days 🔍
03/13/2012 +3 days 🔍
03/14/2012 +1 days 🔍
08/26/2012 +165 days 🔍
08/26/2012 +0 days 🔍
03/23/2015 +939 days 🔍
12/12/2021 +2456 days 🔍

Sourcesinfo

Advisory: d2860c655357975e7b32d84e6b45e98f0dcecd7a
Status: Not defined
Confirmation: 🔍

CVE: CVE-2012-1176 (🔍)
GCVE (CVE): GCVE-0-2012-1176
GCVE (VulDB): GCVE-100-61892
X-Force: 74001
SecurityFocus: 52451 - FriBidi Python binding (pyfribidi) Buffer Overflow Vulnerability

Entryinfo

Created: 03/23/2015 16:50
Updated: 12/12/2021 14:50
Changes: 03/23/2015 16:50 (64), 05/02/2019 17:39 (3), 12/12/2021 14:50 (4)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to know what is going to be exploited?

We predict KEV entries!