International Components for Unicode up to 55.0 common/ubidi.c resolveImplicitLevels memory corruption

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

Summaryinfo

A vulnerability marked as critical has been reported in International Components for Unicode up to 55.0. Affected by this issue is the function resolveImplicitLevels of the file common/ubidi.c. The manipulation leads to memory corruption. This vulnerability is uniquely identified as CVE-2014-8146. Moreover, an exploit is present. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in International Components for Unicode up to 55.0. It has been rated as critical. This issue affects the function resolveImplicitLevels of the file common/ubidi.c. 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 confidentiality, integrity, and availability. The summary by CVE is:

The resolveImplicitLevels function in common/ubidi.c in the Unicode Bidirectional Algorithm implementation in ICU4C in International Components for Unicode (ICU) before 55.1 does not properly track directionally isolated pieces of text, which allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly execute arbitrary code via crafted text.

The weakness was disclosed 05/25/2015 by Pedro Ribeiro with Agile Information Security as not defined posting (Bugtraq). It is possible to read the advisory at securityfocus.com. The identification of this vulnerability is CVE-2014-8146 since 10/10/2014. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known.

The exploit is available 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 171250 (OpenSUSE Security Update for icu (openSUSE-SU-2018:1422-1)).

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-52647†). The entries VDB-75528, VDB-77784, VDB-77884 and VDB-78101 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

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: Memory corruption
CWE: CWE-119
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: 🔍
Nessus Port: 🔍

OpenVAS ID: 802962
OpenVAS Name: Apple iTunes Multiple Vulnerabilities Sep15 (Windows)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

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 🔍
05/12/2015 +7 days 🔍
05/25/2015 +13 days 🔍
05/25/2015 +0 days 🔍
05/25/2015 +0 days 🔍
05/26/2015 +1 days 🔍
09/17/2015 +114 days 🔍
12/24/2024 +3386 days 🔍

Sourcesinfo

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

CVE: CVE-2014-8146 (🔍)
GCVE (CVE): GCVE-0-2014-8146
GCVE (VulDB): GCVE-100-75527

OVAL: 🔍

CERT: 🔍
SecurityFocus: 74457 - ICU Project ICU4C Library Multiple Buffer Overflow Vulnerabilities
Vulnerability Center: 52647 - International Components for Unicode (ICU) <55.1 Remote DoS or Code Execution via Crafted Text - CVE-2014-8146, 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 (59), 12/23/2017 13:15 (17), 05/19/2022 09:58 (3), 05/19/2022 10:02 (2), 12/14/2024 19:57 (25), 12/24/2024 02:17 (1)
Complete: 🔍
Cache ID: 216:A33:103

Be aware that VulDB is the high quality source for vulnerability data.

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