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Message-ID: <1444047935.3188.32.camel@opteya.com> Date: Mon, 05 Oct 2015 14:25:35 +0200 From: Yann Droneaud <ydroneaud@...eya.com> To: oss-security@...ts.openwall.com, Gustavo Grieco <gustavo.grieco@...il.com> Cc: Benjamin Otte <otte@...hat.com>, Matthias Clasen <mclasen@...hat.com> Subject: Re: Re: CVE request: Heap overflow with a gif file in gdk-pixbuf < 2.32.1 Hi, Le jeudi 01 octobre 2015 à 12:25 -0300, Gustavo Grieco a écrit : > 2015-10-01 10:03 GMT-03:00 Gustavo Grieco <gustavo.grieco@...il.com>: > > > We found a heap overflow in the gdk-pixbuf implementation triggered > > by the scaling of gif file.These issues are only fixed in the > > recent release of gdk-pixbuf 2.32.1 but affects older versions (we > > tested it in a fully updated Ubuntu 14.04). > > > > > If someone needs more details, it was fixed in 2.32.1 with this > commit: > https://git.gnome.org/browse/gdk-pixbuf/commit/?id=e9a5704edaa9aee949 > 8f1fbf6e1b70fcce2e55aa > > The patch fixes pixops_scale_nearest() but AFAICT I think the same should be applied to other functions has they use the same construct: - pixops_composite_nearest() https://git.gnome.org/browse/gdk-pixbuf/tree/gdk-pixbuf/pixops/pixops.c?id=e9a5704edaa9aee9498f1fbf6e1b70fcce2e55aa#n339 - pixops_composite_color_nearest() https://git.gnome.org/browse/gdk-pixbuf/tree/gdk-pixbuf/pixops/pixops.c?id=e9a5704edaa9aee9498f1fbf6e1b70fcce2e55aa#n504 - pixops_process() https://git.gnome.org/browse/gdk-pixbuf/tree/gdk-pixbuf/pixops/pixops.c?id=e9a5704edaa9aee9498f1fbf6e1b70fcce2e55aa#n1316 Regards. -- Yann Droneaud OPTEYA
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