International Components for Unicode up to 55.0 common/ubidi.c resolveImplicitLevels numeric error

CVSS Meta Temp Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in International Components for Unicode up to 55.0. This affects the function resolveImplicitLevels of the file common/ubidi.c. The manipulation results in numeric error. This vulnerability was named CVE-2014-8147. In addition, an exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical has been found in International Components for Unicode up to 55.0. Affected is the function resolveImplicitLevels of the file common/ubidi.c. The manipulation with an unknown input leads to a numeric error vulnerability. CWE is classifying the issue as CWE-189. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The resolveImplicitLevels function in common/ubidi.c in the Unicode Bidirectional Algorithm implementation in ICU4C in International Components for Unicode (ICU) before 55.1 uses an integer data type that is inconsistent with a header file, which allows remote attackers to cause a denial of service (incorrect malloc followed by invalid free) or possibly execute arbitrary code via crafted text.

The weakness was presented 05/25/2015 by Pedro Ribeiro with Agile Information Security as not defined posting (Bugtraq). The advisory is shared for download at securityfocus.com. This vulnerability is traded as CVE-2014-8147 since 10/10/2014. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details and a public exploit are known.

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 83345 (Ubuntu 14.04 LTS / 14.10 / 15.04 : icu vulnerabilities (USN-2605-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 170327 (SUSE Enterprise Linux Security Update for icu (SUSE-SU-2017:2318-1)).

Upgrading to version 55.1 eliminates this vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (43887), Tenable (83345), SecurityFocus (BID 74457†) and Vulnerability Center (SBV-50421†). See VDB-75527, VDB-77784, VDB-77884 and VDB-78101 for similar entries. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 83345
Nessus Name: Ubuntu 14.04 LTS / 14.10 / 15.04 : icu vulnerabilities (USN-2605-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 703323
OpenVAS Name: Debian Security Advisory DSA 3323-1 (icu - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: International Components for Unicode 55.1

Timelineinfo

10/10/2014 🔍
05/05/2015 +207 days 🔍
05/05/2015 +0 days 🔍
05/25/2015 +20 days 🔍
05/25/2015 +0 days 🔍
05/26/2015 +1 days 🔍
06/09/2015 +14 days 🔍
12/24/2024 +3486 days 🔍

Sourcesinfo

Advisory: USN-2605-1⛔
Researcher: Pedro Ribeiro
Organization: Agile Information Security
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-8147 (🔍)
GCVE (CVE): GCVE-0-2014-8147
GCVE (VulDB): GCVE-100-75528

OVAL: 🔍

CERT: 🔍
SecurityFocus: 74457 - ICU Project ICU4C Library Multiple Buffer Overflow Vulnerabilities
Vulnerability Center: 50421 - International Components for Unicode (ICU) <55.1 Remote DoS or Code Execution via Crafted Text - CVE-2014-8147, High

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

Entryinfo

Created: 05/26/2015 10:26
Updated: 12/24/2024 02:17
Changes: 05/26/2015 10:26 (63), 06/30/2017 05:47 (11), 05/19/2022 10:04 (3), 05/19/2022 10:05 (2), 12/10/2024 12:36 (26), 12/24/2024 02:17 (1)
Complete: 🔍
Cache ID: 216:E01:103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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