The resolveImplicitLevels function in common/ubidi.c in the Unicode Bidirectional Algorithm...
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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://raw.githubusercontent.com/pedrib/PoC/master/generic/i-c-u-fail.txt
- http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.html
- http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html
- https://security.gentoo.org/glsa/201507-04
- http://www.kb.cert.org/vuls/id/602540
- https://support.apple.com/HT205267
- http://seclists.org/fulldisclosure/2015/May/14
- http://lists.apple.com/archives/security-announce/2015/Sep/msg00005.html
- http://openwall.com/lists/oss-security/2015/05/05/6
- https://support.apple.com/HT205213
- http://www.securityfocus.com/bid/74457
- http://www.debian.org/security/2015/dsa-3323
- http://bugs.icu-project.org/trac/changeset/37080
- http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
- https://lists.apache.org/thread.html/9317fd092b257a0815434b116a8af8daea6e920b6673f4fd5583d5fe%40%3Ccommits.druid.apache.org%3E
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Timeline
CVSS Vectors
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.