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cURL/libcURL URL Parsing Off-By-One Vulnerability
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Secunia Advisory:
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SA17907
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Release Date:
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2005-12-07
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Last Update:
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2005-12-09
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Critical:
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Less critical
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Impact:
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Unknown
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Where:
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Local system
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Solution Status:
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Vendor Patch
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| Software: | cURL 7.x
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| | CVE reference: | CVE-2005-4077 (Secunia mirror)
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Description:
Stefan Esser has reported a vulnerability in cURL/libcURL, which has an unknown impact.
The vulnerability is caused due to an off-by-one error when parsing an URL that is longer than 256 bytes. By using a specially crafted URL, a two-byte overflow is reportedly possible. This may be exploited to corrupt memory allocation structures. The vulnerability is reportedly exploitable only via a direct request to cURL and not via a redirect.
The vulnerability has been reported in version 7.15.0 and prior.
NOTE: The actual impact of this vulnerability depends on the application (e.g. PHP) that uses the cURL library.
Solution:
Update to version 7.15.1.
http://curl.haxx.se/download.html
Provided and/or discovered by:
Stefan Esser, Hardened PHP Project.
Changelog:
2005-12-09: Added CVE reference.
Original Advisory:
http://www.hardened-php.net/advisory_242005.109.html
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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4 Related Secunia Security Advisories
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1. cURL/libcURL GnuTLS Security Issue
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2. cURL/libcURL TFTP Protocol URL Parsing Buffer Overflow
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3. cURL/libcURL NTLM Username Handling Buffer Overflow Vulnerability
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4. cURL/libcURL NTLM and Kerberos Authentication Buffer Overflows
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