Date: Thu, 12 Apr 2012 02:10:03 +0200 From: Nico Golde <oss-security+ml@...lde.de> To: oss-security@...ts.openwall.com Subject: Re: CVE id request for links2 Hi, * Kurt Seifried <kseifried@...hat.com> [2012-04-10 21:56]: > On 04/09/2012 08:43 PM, Nico Golde wrote: [...] > > I discovered some out of memory accesses in links2 graphics mode > > that could be potentially used to run exploits. I fixed them in > > links-2.6. For Debian Squeeze, I am sending this patch that > > backports the fixes to links-2.3pre1. Apply the patch and > > distribute patched packages links and links2 through > > security.debian.org. > > > > > > [...] This patch fixes: > > > > Buffer overflow when pasting too long text from clipboard to dialog > > boxes (not remotely exploitable) > > Can this result in code execution? I am not sure about this one. For out of memory write in dip.c, my guess is yes, it is basically possible to write past an allocated buffer. Even though I can't tell you what data would reside in that area. For the xbm decoder, the problem has basically been that xbm_decode() did not indicate an error when decoding xbm images and thus the callers would continue to operate on the parsed structures even though the image is faulty. Cheers Nico -- Nico Golde - http://www.ngolde.de - nion@...ber.ccc.de - GPG: 0xA0A0AAAA For security reasons, all text in this mail is double-rot13 encrypted. Content of type "application/pgp-signature" skipped
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