CVE-2009-4035: Code Injection
First published: Thu Nov 26 2009(Updated: )
SuSE reported a buffer overflow in FoFiType1::parse affecting older xpdf versions. Code snippets from fofi/FoFiType1.cc: 133 void FoFiType1::parse() { ... 163 line = getNextLine(line); 164 for (j = 0; j < 300 && line; ++j) { 165 line1 = getNextLine(line); 166 if ((n = line1 - line) > 255) { 167 n = 255; 168 } 169 strncpy(buf, line, n); getNextLine can, however, return NULL: 117 char *FoFiType1::getNextLine(char *line) { 118 while (line < (char *)file + len && *line != '\x0a' && *line != '\x0d') { 119 ++line; 120 } 121 if (line < (char *)file + len && *line == '\x0d') { 122 ++line; 123 } 124 if (line < (char *)file + len && *line == '\x0a') { 125 ++line; 126 } 127 if (line >= (char *)file + len) { 128 return NULL; 129 } Therefore, (line1 - line) is not defined / results in negative value n. That value is later passed to strncpy, causing overflow of buf buffer.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| GNOME GPDF | =2.8.2 | |
| KDE KPDF | =3.3.1 | |
| KDE Graphics | =3.3.1 | |
| Xpdf | =3.0.0 |
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Reference Links
- http://secunia.com/advisories/37641
- http://www.securitytracker.com/id?1023356
- http://www.securityfocus.com/bid/37350
- http://cgit.freedesktop.org/poppler/poppler/tree/fofi/FoFiType1.cc?id=4b4fc5c017bf147c9069bbce32fc14467bd2a81a
- http://secunia.com/advisories/37793
- https://bugzilla.redhat.com/show_bug.cgi?id=541614
- http://secunia.com/advisories/37781
- http://cgit.freedesktop.org/poppler/poppler/diff/fofi/FoFiType1.cc?id=4b4fc5c0
- http://www.vupen.com/english/advisories/2009/3555
- http://secunia.com/advisories/37787
- http://www.redhat.com/support/errata/RHSA-2009-1681.html
- http://www.redhat.com/support/errata/RHSA-2009-1680.html
- http://www.redhat.com/support/errata/RHSA-2009-1682.html
- http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00003.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/54831
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10996
- http://cgit.freedesktop.org/poppler/poppler/commit/?id=4b4fc5c0
- https://rhn.redhat.com/errata/RHSA-2009-1680.html
- https://rhn.redhat.com/errata/RHSA-2009-1681.html
- https://rhn.redhat.com/errata/RHSA-2009-1682.html
Frequently Asked Questions
What is the severity of CVE-2009-4035?
CVE-2009-4035 has a high severity rating due to the buffer overflow vulnerability that can lead to code execution.
How do I fix CVE-2009-4035?
To fix CVE-2009-4035, you should upgrade to the patched versions of affected software such as Gnome GPDF 2.8.3 or newer.
Which software is affected by CVE-2009-4035?
CVE-2009-4035 affects older versions of Gnome GPDF, KDE KPDF, KDE Graphics, and Xpdf.
What are the potential consequences of exploiting CVE-2009-4035?
Exploiting CVE-2009-4035 could allow an attacker to execute arbitrary code on the vulnerable system.
Is CVE-2009-4035 a remote or local vulnerability?
CVE-2009-4035 is primarily a local vulnerability, but it can be triggered by opening malicious PDF files.
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- vendor/gnome
- canonical/gnome gpdf
- version/gnome gpdf/2.8.2
- vendor/kde
- canonical/kde kpdf
- version/kde kpdf/3.3.1
- canonical/kde graphics
- version/kde graphics/3.3.1
- vendor/xpdf
- canonical/xpdf
- version/xpdf/3.0.0