Oracle Java SE/JRockit/Java SE Embedded 5.0u61/6u71/7u51/8 Library unpack.cpp link following

CVSS Meta Temp Score
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CTI Interest Score
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3.8$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Oracle Java SE, JRockit and Java SE Embedded 5.0u61/6u71/7u51/8. This affects an unknown part of the file unpack.cpp of the component Library Handler. The manipulation results in link following. This vulnerability is known as CVE-2014-1876. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic has been found in Oracle Java SE, JRockit and Java SE Embedded 5.0u61/6u71/7u51/8 (Programming Language Software). Affected is an unknown part of the file unpack.cpp of the component Library Handler. The manipulation with an unknown input leads to a link following vulnerability. CWE is classifying the issue as CWE-59. The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. This is going to have an impact on integrity, and availability. CVE summarizes:

The unpacker::redirect_stdio function in unpack.cpp in unpack200 in OpenJDK 6, 7, and 8; Oracle Java SE 5.0u61, 6u71, 7u51, and 8; JRockit R27.8.1 and R28.3.1; and Java SE Embedded 7u51 does not securely create temporary files when a log file cannot be opened, which allows local users to overwrite arbitrary files via a symlink attack on /tmp/unpack.log.

The weakness was published 04/15/2014 by Jakub Wilk as Oracle Critical Patch Update Advisory - April 2014 as confirmed advisory (Website). The advisory is shared for download at oracle.com. This vulnerability is traded as CVE-2014-1876 since 02/06/2014. The exploitability is told to be difficult. The attack needs to be approached locally. 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 73654 (Amazon Linux AMI : java-1.6.0-openjdk (ALAS-2014-326)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Amazon Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 185086 (HP-UX running Java6, Multiple Vulnerabilities(HPSBUX03092)).

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

The vulnerability is also documented in the databases at Tenable (73654), SecurityFocus (BID 65568†), OSVDB (102808†), Secunia (SA58415†) and SecurityTracker (ID 1030099†). Similar entries are available at VDB-10797, VDB-11580, VDB-12188 and VDB-12983. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 3.8

VulDB Base Score: 4.0
VulDB Temp Score: 3.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Link following
CWE: CWE-59
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 73654
Nessus Name: Amazon Linux AMI : java-1.6.0-openjdk (ALAS-2014-326)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 702912
OpenVAS Name: Debian Security Advisory DSA 2912-1 (openjdk-6 - security update
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
Exposure Time: 🔍

Timelineinfo

02/03/2014 🔍
02/03/2014 +0 days 🔍
02/06/2014 +3 days 🔍
02/10/2014 +4 days 🔍
04/15/2014 +64 days 🔍
04/15/2014 +0 days 🔍
04/16/2014 +1 days 🔍
04/16/2014 +0 days 🔍
04/16/2014 +0 days 🔍
05/02/2014 +16 days 🔍
06/17/2021 +2603 days 🔍

Sourcesinfo

Vendor: oracle.com

Advisory: Oracle Critical Patch Update Advisory - April 2014
Researcher: Jakub Wilk
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-1876 (🔍)
GCVE (CVE): GCVE-0-2014-1876
GCVE (VulDB): GCVE-100-12960

OVAL: 🔍

SecurityFocus: 65568 - Multiple Oracle Java Products 'unpack.cpp' Insecure Temporary File Creation Vulnerability
Secunia: 58415 - Ubuntu update for openjdk-6, Highly Critical
OSVDB: 102808
SecurityTracker: 1030099 - Oracle Java Multiple Flaws Let Remote Users Execute Arbitrary Code, Access and Modify Data, and Deny Service
Vulnerability Center: 44116 - [cpuapr2014-1972952] Oracle Java SE JRockit Java SE Embedded and OpenJDK Local Write Access and DoS in unpack200 Libraries, Low

See also: 🔍

Entryinfo

Created: 04/16/2014 10:33
Updated: 06/17/2021 09:20
Changes: 04/16/2014 10:33 (86), 09/11/2017 08:47 (1), 06/17/2021 09:20 (3)
Complete: 🔍
Cache ID: 216::103

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