oss-security - Re: CVE request: heap corruption in libpango

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Message-ID: <1110969345.43645.1295541408005.JavaMail.root@zmail01.collab.prod.int.phx2.redhat.com>
Date: Thu, 20 Jan 2011 11:36:48 -0500 (EST)
From: Josh Bressers <bressers@...hat.com>
To: oss-security@...ts.openwall.com
Subject: Re: CVE request: heap corruption in libpango

Please use CVE-2011-0020 for this.

Thanks.

-- 
    JB

----- Original Message -----
> From Launchpad [1]:
> 
> "When used with FreeType2 as a backend, Pango is vulnerable to heap
> corruption when rendering malformed fonts. The vulnerability occurs in
> pango_ft2_font_render_box_glyph() in pango/pangoft2-render.c. A buffer
> is malloc'd with size box->bitmap.rows * box->bitmap.pitch.
> Subsequently, 0xff is written at offsets into this buffer without
> checking that these offsets fall within the buffer's boundaries,
> leading to heap corruption."
> 
> -Dan
> 
> [1] https://bugs.launchpad.net/ubuntu/+source/pango1.0/+bug/696616

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