unicon-imc2 CCE_pinyin.c and xl_pinyin.c buffer overflow
| uniconimc2-ccepinyin-xlpinyin-bo (35382) |  High Risk |
Description:
The unicon-imc2 library is vulnerable to multiple stack-based buffer overflows in the CCE_pinyin.c and xl_pinyin.c files. By setting an overly long HOME environment variable, a local attacker could exploit this vulnerability using an application linked to the vulnerable library to overflow a buffer and execute arbitrary code on the system with root privileges.
*CVSS:
| Base Score: | 7 |
| Access Vector: | Local |
| Access Complexity: | Low |
| Authentication: | Not Required |
| Confidentiality Impact: | Complete |
| Integrity Impact: | Complete |
| Availability Impact: | Complete |
| Temporal Score: | 5.2 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Access
Remedy:
Apply patch available from the Debian Bug report logs - #431336. See References.
For Debian GNU/Linux (unicon-imc2):
Refer to DSA-1328 for patch, upgrade, or suggested workaround information. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
References:
- Debian Bug report logs - #431336: CVE-2007-2835 : Buffer overflow.
- BID-24719: Unicon-imc2 Environment Variable Buffer Overflow Vulnerability
- CVE-2007-2835: Multiple stack-based buffer overflows in (1) CCE_pinyin.c and (2) xl_pinyin.c in ImmModules/cce/ in unicon-imc2 3.0.4, as used by zhcon and other applications, allow local users to gain privileges via a long HOME environment variable.
- DSA-1328: unicon-imc2 -- buffer overflow
- SA25910: UNICON "HOME" Environment Variable Buffer Overflow Vulnerability
Platforms Affected:
- Debian Debian Linux 4.0
- unicon unicon-imc2 3.0.4
Reported:
Jul 01, 2007
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.