SB2018052513 - OpenSUSE Linux update for icu
Published: May 25, 2018 Updated: June 14, 2021
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 8 secuirty vulnerabilities.
1) Heap-based buffer overflow (CVE-ID: CVE-2014-8146)
The vulnerability allows a remote attacker to cause Dos condition or execute arbitrary code on the target system.
The vulnerability exists due to heap-based buffer overflow when the resolveImplicitLevels function in common/ubidi.c in the Unicode Bidirectional Algorithm implementation in ICU4C does not properly track directionally isolated pieces of text. A remote unauthenticated attacker can supply specially crafted text file, trigger memory corruption 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.
2) Improper input validation (CVE-ID: CVE-2014-8147)
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.
3) Out-of-bounds read (CVE-ID: CVE-2016-6293)
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists due to the uloc_acceptLanguageFromHTTP function in common/uloc.cpp for C/C++ does not ensure that there is a '' character at the end of a certain temporary array. A remote unauthenticated attacker can supply a call with a long httpAcceptLanguage argument, trigger out-of-bounds read and cause the service to crash.
4) Double free memory error (CVE-ID: CVE-2017-14952)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to double free memory error in i18n/zonemeta.cpp in International Components for Unicode (ICU) for C/C++. A remote unauthenticated attacker can supply a ca specially crafted string, aka a "redundant UVector entry clean up function call" issue, trigger memory corruption and execute arbitrary code with elevated privileges.
Successful exploitation of the vulnerability may result in system compromise.
5) Integer overflow (CVE-ID: CVE-2017-15422)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists due to integer overflow in ICU. A remote attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and cause the application to crash.
Successful exploitation of the vulnerability results in denial of service.
6) Stack-based buffer overflow (CVE-ID: CVE-2017-17484)
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists due to stack-based buffer overflow when the ucnv_UTF8FromUTF8 function in ucnv_u8.cpp in International Components for Unicode (ICU) for C/C++ mishandles ucnv_convertEx calls for UTF-8 to UTF-8 conversion. A remote unauthenticated attacker can supply a specially crafted string, as demonstrated by ZNC, trigger memory corruption and cause the service to crash.
7) Heap-based buffer overflow (CVE-ID: CVE-2017-7867)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to boundary error in utf8TextAccess() function in common/utext.cpp and the utext_moveIndex32* function in International Components for Unicode (ICU) for C/C++ before 2017-02-13. A remote unauthenticated attacker can trigger heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
8) Heap-based buffer overflow (CVE-ID: CVE-2017-7868)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to boundary error in utf8TextAccess function in common/utext.cpp and the utext_moveIndex32* function in International Components for Unicode (ICU) for C/C++ before 2017-02-13. A remote unauthenticated attacker can trigger heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.