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[oCERT-2011-001] Chyrp input sanitization errors
Jul 13 2011 08:17PM
Andrea Barisani (lcars ocert org)
#2011-001 Chyrp input sanitization errors
The Chyrp framework, an open source blogging engine, suffers from cross-site
scripting (XSS) and local file inclusion (LFI) vulnerabilities.
Insufficient input sanitization on the parameters passed to pages related to
be potentially exploited to hijack the session of the administrator.
Insufficient path sanitization on the root 'action' query string parameter
leads to inclusion of arbitrary files from local sources, this could be
exploited to read arbitrary accessible files on the hosting server filesystem
and potentially execute arbitrary commands or code.
Chyrp <= 2.1
Credit: vulnerability report and PoC code received from Eldar Marcussen
<wireghoul [at] justanotherhacker [dot] com>.
2011-05-17: vulnerability report received
2010-05-17: contacted chyrp maintainers
2010-07-13: oCERT advisory published jointly with reporter advisory
Andrea Barisani | Founder & Project Coordinator
oCERT | OSS Computer Security Incident Response Team
<lcars (at) ocert (dot) org [email concealed]> http://www.ocert.org
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"Pluralitas non est ponenda sine necessitate"
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