FreeBSD : Several vulnerabilities found in IcedTea-Web (55b498e2-e56c-11e1-bbd5-001c25e46b1d)
High Nessus Plugin ID 61522
SynopsisThe remote FreeBSD host is missing a security-related update.
DescriptionThe IcedTea project team reports :
CVE-2012-3422: Use of uninitialized instance pointers
An uninitialized pointer use flaw was found in IcedTea-Web web browser plugin. A malicious web page could use this flaw make IcedTea-Web browser plugin pass invalid pointer to a web browser. Depending on the browser used, it may cause the browser to crash or possibly execute arbitrary code.
The get_cookie_info() and get_proxy_info() call getFirstInTableInstance() with the instance_to_id_map hash as a parameter. If instance_to_id_map is empty (which can happen when plugin was recently removed), getFirstInTableInstance() returns an uninitialized pointer.
CVE-2012-3423: Incorrect handling of non 0-terminated strings
It was discovered that the IcedTea-Web web browser plugin incorrectly assumed that all strings provided by browser are NUL terminated, which is not guaranteed by the NPAPI (Netscape Plugin Application Programming Interface). When used in a browser that does not NUL terminate NPVariant NPStrings, this could lead to buffer over-read or over-write, resulting in possible information leak, crash, or code execution.
Mozilla browsers currently NUL terminate strings, however recent Chrome versions are known not to provide NUL terminated data.
SolutionUpdate the affected package.