Date: Mon, 11 May 2015 15:59:55 +0200 From: Andrea Barisani <lcars@...rt.org> To: oss-security@...ts.openwall.com, ocert-announce@...ts.ocert.org, bugtraq@...urityfocus.com Subject: [oCERT-2015-006] dcraw input sanitization errors #2015-006 dcraw input sanitization errors Description: The dcraw photo decoder is an open source project for raw image parsing. The dcraw tool, as well as several other projects re-using its code, suffers from an integer overflow condition which lead to a buffer overflow. The vulnerability concerns the 'len' variable, parsed without validation from opened images, used in the ljpeg_start() function. A maliciously crafted raw image file can be used to trigger the vulnerability, causing a Denial of Service condition. Affected version: dcraw >= 7.00 UFRaw >= 0.5 LibRaw <= 0.16.0, 0.17-Alpha2 RawTherapee >= 3.0 CxImage >= 6.00 Rawstudio >= 0.1 Kodi >= 10.0 ExactImage >= 0.1.0 Fixed version: dcraw, N/A UFRaw, N/A LibRaw >= 0.16.1, 0.17-Alpha3 RawTherapee, N/A CxImage, N/A Rawstudio, N/A Kodi, N/A ExactImage, N/A Credit: vulnerability report from Eduardo Castellanos <guayin [at] gmail [dot] com>. CVE: N/A Timeline: 2015-04-24: vulnerability report received 2015-04-27: contacted dcraw maintainer 2015-04-30: patch provided by maintainer 2015-05-04: reporter confirms patch 2015-05-11: contacted additional affected vendors 2015-05-11: advisory release References: https://github.com/LibRaw/LibRaw/commit/4606c28f494a750892c5c1ac7903e62dd1c6fdb5 https://github.com/rawstudio/rawstudio/commit/983bda1f0fa5fa86884381208274198a620f006e Permalink: http://www.ocert.org/advisories/ocert-2015-006.html -- Andrea Barisani | Founder & Project Coordinator oCERT | OSS Computer Security Incident Response Team <lcars@...rt.org> http://www.ocert.org 0x864C9B9E 0A76 074A 02CD E989 CE7F AC3F DA47 578E 864C 9B9E "Pluralitas non est ponenda sine necessitate"
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