Microsoft's ASN.1 implementation contains a flaw that may allow a malicious user to cause denial-of-service conditions or possibly execute arbitrary code. The issue is triggered when a specially crafted authentication request is sent to the ASN.1 parser, causing it to free memory that has already been freed. It is possible that the flaw may allow memory corruption, denial of service, or the execution of arbitrary code, resulting in a loss of confidentiality, integrity, and/or availability.
Classification
Location:
Local Access Required,
Remote / Network Access
Attack Type:
Cryptographic,
Denial of Service,
Input Manipulation
Impact:
Loss of Confidentiality,
Loss of Integrity,
Loss of Availability
Exploit:
Exploit Rumored
Disclosure:
OSVDB Verified
Solution
Currently, there are no known workarounds or upgrades to correct this issue. However, Microsoft has released a patch to address this vulnerability.
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This section lists the latest news and blogs found via the daylife API (and for older items, the technorati API), which mention or otherwise discuss this vulnerability.