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Bug#: 225461
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Status: NEW
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Assigned To: Gentoo Security <security@gentoo.org>
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Reporter: Robert Buchholz <rbu@gentoo.org>
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Description:   Opened: 2008-06-08 22:28 0000 
asn1: additional sanity checking during BER decoding (CVE-2008-1673)

upstream commit: ddb2c43594f22843e9f3153da151deaba1a834c5

- Don't trust a length which is greater than the working buffer.
  An invalid length could cause overflow when calculating buffer size
  for decoding oid.

- An oid length of zero is invalid and allows for an off-by-one error when
  decoding oid because the first subid actually encodes first 2 subids.

- A primitive encoding may not have an indefinite length.

Thanks to Wei Wang from McAfee for report.
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