International Components for Unicode up to 59.1 i18n/zonemeta.cpp String double free

CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in International Components for Unicode up to 59.1. The impacted element is the function up of the file i18n/zonemeta.cpp. Such manipulation as part of String leads to double free. This vulnerability is documented as CVE-2017-14952. The attack can be executed remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in International Components for Unicode up to 59.1 and classified as critical. Affected by this issue is the function up of the file i18n/zonemeta.cpp. The manipulation as part of a String leads to a double free vulnerability. Using CWE to declare the problem leads to CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Double free in i18n/zonemeta.cpp in International Components for Unicode (ICU) for C/C++ through 59.1 allows remote attackers to execute arbitrary code via a crafted string, aka a "redundant UVector entry clean up function call" issue.

The bug was discovered 08/09/2017. The weakness was released 10/16/2017 (Website). The advisory is available at bugs.icu-project.org. This vulnerability is handled as CVE-2017-14952 since 09/29/2017. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 68 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 104119 (Ubuntu 14.04 LTS / 16.04 LTS / 17.04 / 17.10 : icu vulnerability (USN-3458-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171174 (SUSE Enterprise Linux Security Update for icu (SUSE-SU-2018:1401-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 1 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (104119) and CERT Bund (WID-SEC-2025-1659). Entries connected to this vulnerability are available at VDB-99854, VDB-110440 and VDB-133756. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • Open Source International Components for Unicode (icu)
  • IBM DB2

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Double free
CWE: CWE-415 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 104119
Nessus Name: Ubuntu 14.04 LTS / 16.04 LTS / 17.04 / 17.10 : icu vulnerability (USN-3458-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 69581
OpenVAS Name: Fedora Update for icu FEDORA-2017-856e8f657d
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: 🔍

Timelineinfo

08/09/2017 🔍
09/29/2017 +51 days 🔍
10/16/2017 +17 days 🔍
10/16/2017 +0 days 🔍
10/17/2017 +1 days 🔍
10/23/2017 +6 days 🔍
10/24/2017 +1 days 🔍
08/09/2025 +2846 days 🔍

Sourcesinfo

Advisory: 40324
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-14952 (🔍)
GCVE (CVE): GCVE-0-2017-14952
GCVE (VulDB): GCVE-100-107906
CERT Bund: WID-SEC-2025-1659 - International Components for Unicode (icu): Schwachstelle ermöglicht Denial of Service

See also: 🔍

Entryinfo

Created: 10/17/2017 09:05
Updated: 08/09/2025 20:46
Changes: 10/17/2017 09:05 (73), 11/25/2019 11:33 (4), 01/17/2021 08:53 (3), 08/09/2025 20:46 (24)
Complete: 🔍
Cache ID: 216::103

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