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Insecure Library Loading
Highly critical

Evince dvi-backend Multiple Vulnerabilities

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Release Date:  2011-01-06    Last Update:  2011-03-11    Views:  3,370

Secunia Advisory SA42769

Where:

From remote

Impact:

System access

Solution Status:

Vendor Patch

Software:

CVE Reference(s):

Description


Some vulnerabilities have been reported in Evince, which can be exploited by malicious people to compromise a user's system.

1) An array indexing error when parsing PK font files within the "pk_load_font()" function in backend/dvi/mdvi-lib/pk.c can be exploited to corrupt memory by tricking the user into opening or previewing a specially crafted DVI file.

2) An array indexing error when parsing VF font files within the "vf_load_font()" function in backend/dvi/mdvi-lib/vf.c can be exploited to corrupt memory by tricking the user into opening or previewing a specially crafted DVI file.

3) A boundary error when parsing AFM font files within the "token()" function in backend/dvi/mdvi-lib/afmparse.c can be exploited to cause a heap-based buffer overflow by tricking the user into opening or previewing a specially crafted DVI file.

4) An integer overflow error when parsing TFM font files within the "tfm_load_file()" function in backend/dvi/mdvi-lib/tfmfile.c can be exploited to corrupt memory by tricking the user into opening or previewing a specially crafted DVI file.

5) A boundary error when parsing AFM font files within the "linetoken()" function in backend/dvi/mdvi-lib/afmparse.c can be exploited to cause a heap-based buffer overflow by tricking the user into opening or previewing a specially crafted DVI file.

Successful exploitation of the vulnerabilities may allow execution of arbitrary code.


Solution:
Update to version 2.91.90.

Provided and/or discovered by:
1) The vendor credits Jon Larimer, IBM X-Force.
5) Reported in a GNOME bug by rock-madrid.

Original Advisory:
1) http://git.gnome.org/browse/evince/commit/?id=d4139205b010ed06310d14284e63114e88ec6de2
https://bugzilla.redhat.com/show_bug.cgi?id=666313
https://bugzilla.redhat.com/show_bug.cgi?id=666314
https://bugzilla.redhat.com/show_bug.cgi?id=666318
https://bugzilla.redhat.com/show_bug.cgi?id=666321
5) http://git.gnome.org/browse/evince/commit/?id=439c5070022eab6cef7266aab47f978058012c72
https://bugzilla.gnome.org/show_bug.cgi?id=640923

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Evince dvi-backend Multiple Vulnerabilities

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