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7.0	$0-$5k	0.00

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. There are known technical details, but no exploit is available.

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 vulnerability database at Tenable (83345). See 75527, 77784, 77884 and 78101 for similar entries.

Productinfo

Name

• International Components for Unicode

Version

• 55.0

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

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: 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: 🔍

Threat Intelligenceinfo

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

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 🔍
05/19/2022 +2536 days 🔍

Sourcesinfo

Advisory: USN-2605-1⛔
Researcher: Pedro Ribeiro
Organization: Agile Information Security
Status: Not defined
Confirmation: 🔍

CVE: CVE-2014-8147 (🔍)
OVAL: 🔍

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

See also: 🔍

Entryinfo

Created: 05/26/2015 10:26
Updated: 05/19/2022 10:05
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)
Complete: 🔍

Discussion

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