HOMEVULNERABILITIESCVE-2014-8147
HIGHPOC

CVE-2014-8147

CWE-189Published: May 25, 2015· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2014-8147 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A proof-of-concept (PoC) exploit exists for CVE-2014-8147. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityP
IntegrityP
AvailabilityP
AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected Vendors & Products

Apple2 product(s)
mac os xwatchos
icu-project1 product(s)
international components for unicode
Source: NVD CPE · 3 total CPE entries

Exploit & PoC Resources

POC AVAILABLEProof-of-concept code exists
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttp://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html
PATCHhttp://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html
ADVISORYhttp://bugs.icu-project.org/trac/changeset/37080
ADVISORYhttp://seclists.org/fulldisclosure/2015/May/14
ADVISORYhttp://www.debian.org/security/2015/dsa-3323
ADVISORYhttp://www.kb.cert.org/vuls/id/602540
ADVISORYhttp://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html
ADVISORYhttp://www.securityfocus.com/bid/74457
ADVISORYhttps://security.gentoo.org/glsa/201507-04
ADVISORYhttps://support.apple.com/HT205213
ADVISORYhttps://support.apple.com/HT205267
ADVISORYhttp://bugs.icu-project.org/trac/changeset/37080
ADVISORYhttp://seclists.org/fulldisclosure/2015/May/14
ADVISORYhttp://www.debian.org/security/2015/dsa-3323
ADVISORYhttp://www.kb.cert.org/vuls/id/602540
ADVISORYhttp://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html
ADVISORYhttp://www.securityfocus.com/bid/74457
ADVISORYhttps://security.gentoo.org/glsa/201507-04
ADVISORYhttps://support.apple.com/HT205213
ADVISORYhttps://support.apple.com/HT205267

All References (32)

→
http://bugs.icu-project.org/trac/changeset/37080Issue Tracking · Vendor Advisory
→
http://lists.apple.com/archives/security-announce/2015/Sep/msg00005.htmlMailing List
→
http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.htmlMailing List
→
http://openwall.com/lists/oss-security/2015/05/05/6Mailing List
→
http://seclists.org/fulldisclosure/2015/May/14Exploit · Mailing List · Third Party Advisory
→
http://www.debian.org/security/2015/dsa-3323Third Party Advisory
→
http://www.kb.cert.org/vuls/id/602540Third Party Advisory · US Government Resource
→
http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.htmlThird Party Advisory
→
http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.htmlPatch
→
http://www.securityfocus.com/bid/74457Third Party Advisory · VDB Entry
→
https://lists.apache.org/thread.html/9317fd092b257a0815434b116a8af8daea6e920b6673f4fd5583d5fe%40%3Ccommits.druid.apache.org%3E
→
https://raw.githubusercontent.com/pedrib/PoC/master/generic/i-c-u-fail.txtExploit
→
https://security.gentoo.org/glsa/201507-04Third Party Advisory
→
https://support.apple.com/HT205213Third Party Advisory
→
https://support.apple.com/HT205267Third Party Advisory

Quick Facts

CVE IDCVE-2014-8147
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-189
CISA KEVNo
ExploitPOC
Affected2 vendor(s)
PublishedMay 25, 2015

Related CVEs (CWE-189)

CVE-2008-7126
10.0
CVE-2015-3087
10.0
CVE-2008-5159
10.0
CVE-2008-2303
10.0
CVE-2011-1564
10.0
CVE-2008-1842
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2014-8147 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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