Improper input validation in icu - CVE-2014-8147
Published: May 30, 2018 / Updated: June 17, 2021
Vulnerability identifier: #VU13052
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2014-8147
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code on the target system.
The vulnerability exists due to the resolveImplicitLevels function in common/ubidi.c in the Unicode Bidirectional Algorithm implementation in ICU4C uses an integer data type that is inconsistent with a header file. A remote unauthenticated attacker can supply specially crafted text file, trigger incorrect malloc followed by invalid free and cause the service to crash or execute arbitrary code with elevated privileges.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
icu
Gentoo Linux
Ubuntu
IBM DataPower Gateway
openSUSE Leap
icu (Alpine package)
Gentoo Linux
Ubuntu
IBM DataPower Gateway
openSUSE Leap
icu (Alpine package)
How to mitigate CVE-2014-8147
Update to version 55.1.
IBM DataPower Gateway - addressed in versions 10.0.1.5, 10.0.4.0, 2018.4.1.18
icu (Alpine package) - update to 52.1-r1
icu (Alpine package) - update to 52.1-r1