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GnuTLS libtasn1 DER Decoding Denial of Service Vulnerabilities
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Secunia Advisory:
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SA18794
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Release Date:
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2006-02-10
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Last Update:
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2006-02-13
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Popularity:
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8,746 views
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Critical:
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Moderately critical
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Impact:
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DoS
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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: | GnuTLS 1.x
GnuTLS libtasn1 Tiny ASN.1 library 0.x
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| CVE reference: | CVE-2006-0645
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Description:
Evgeny Legerov has reported some vulnerabilities in GnuTLS libtasn1, which potentially can be exploited by malicious people to cause a DoS (Denial of Service).
The vulnerabilities are caused due to errors within the DER decoder in libtasn1. This can be exploited to crash an application that uses the library via specially-crafted input.
The vulnerabilities have been reported in libtasn1 prior to 0.2.18 and in GnuTLS prior to 1.2.10.
Solution:
Update to the fixed versions.
http://www.gnu.org/software/gnutls/download.html
Libtasn1:
Update to version 0.2.18.
GnuTLS:
Update to version 1.2.10.
The vulnerabilities have also been fixed in GnuTLS version 1.3.4 (experimental).
Provided and/or discovered by:
Evgeny Legerov, GLEG Ltd.
Changelog:
2006-02-13: Added CVE reference.
Original Advisory:
http://lists.gnupg.org/pipermail/gnutls-dev/2006-February/001058.html
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About this Secunia Advisory
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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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