Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apple | Mac Os X | <= 10.10.4 |
| Apple | Watchos | <= 1.0.1 |
| Icu-Project | International Components For Unicode | < 55.1 |
Related Weaknesses (CWE)
References
- http://bugs.icu-project.org/trac/changeset/37080Issue TrackingVendor 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/14ExploitMailing ListThird Party Advisory
- http://www.debian.org/security/2015/dsa-3323Third Party Advisory
- http://www.kb.cert.org/vuls/id/602540Third Party AdvisoryUS 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 AdvisoryVDB Entry
- https://lists.apache.org/thread.html/9317fd092b257a0815434b116a8af8daea6e920b667
- 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
FAQ
What is CVE-2014-8147?
CVE-2014-8147 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 ...
How severe is CVE-2014-8147?
CVE-2014-8147 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2014-8147?
Check the references section above for vendor advisories and patch information. Affected products include: Apple Mac Os X, Apple Watchos, Icu-Project International Components For Unicode.