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OpenSSL Multiple Vulnerabilities in Client Certificate Handling
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Secunia Advisory:
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SA9886
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Release Date:
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2003-10-01
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Last Update:
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2003-11-04
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Popularity:
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16,276 views
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Critical:
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Highly critical
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Impact:
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DoS
System access
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | OpenSSL 0.9.x
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Secunia CVSS-2 Score:
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| Advisory Content (Page 1 of 3) | [ 1 ] [ 2 ] [ 3 ] | |
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Description:
Multiple vulnerabilities have been identified in OpenSSL, which potentially allow malicious people to cause a DoS (Denial of Service) or to compromise a vulnerable system.
1) ASN.1 encodings rejected by the parser because they are invalid may cause a deallocation of memory. It is currently unknown if this can be exploited to execute arbitrary code or merely cause a DoS.
2) It is possible to cause an out of bounds read by supplying unusual ASN.1 tag values. This may cause a DoS.
3) If OpenSSL is in debug mode, an invalid public key in a certificate may cause the verify code to crash. This could lead to a DoS against systems running in debug mode.
An error causes OpenSSL to parse and handle client certificates even when OpenSSL isn't configured to do so.
Version 0.9.6j and prior are vulnerable (0.9.6 versions are not affected by issue 1).
Version 0.9.7b and prior are vulnerable.
Change Page:
[ 1 ] [ 2 ] [ 3 ]
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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