CVE-2021-30470
First published: Thu Apr 08 2021(Updated: )
A flaw was found in PoDoFo 0.9.7. An uncontrolled recursive call among PdfTokenizer::ReadArray(), PdfTokenizer::GetNextVariant() and PdfTokenizer::ReadDataType() functions can lead to a stack overflow.
Credit: patrick@puiterwijk.org patrick@puiterwijk.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/libpodofo | <=0.9.7+dfsg-2<=0.9.8+dfsg-3<=0.9.8+dfsg-3.2 | |
| PoDoFo | =0.9.7 | |
| Red Hat Enterprise Linux | =7.0 | |
| Fedora | =33 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1947436
- https://sourceforge.net/p/podofo/tickets/130/
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1947638
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1947640
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1947639
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30470
- https://nvd.nist.gov/vuln/detail/CVE-2021-30470
- https://launchpad.net/bugs/cve/CVE-2021-30470
- https://security-tracker.debian.org/tracker/CVE-2021-30470
- https://ubuntu.com/security/CVE-2021-30470
Frequently Asked Questions
What is the severity of CVE-2021-30470?
CVE-2021-30470 has a medium severity rating due to the potential for a stack overflow vulnerability.
What software is affected by CVE-2021-30470?
CVE-2021-30470 affects versions of PoDoFo up to 0.9.7 and versions of libpodofo in Debian, as well as specific versions on Red Hat Enterprise Linux and Fedora.
How do I fix CVE-2021-30470?
To fix CVE-2021-30470, you should upgrade to the latest version of PoDoFo and ensure that your package manager has the updated libpodofo.
What is the risk associated with CVE-2021-30470?
The risk associated with CVE-2021-30470 is that an attacker could exploit the stack overflow to execute arbitrary code or crash the application.
Can CVE-2021-30470 be exploited remotely?
Yes, CVE-2021-30470 can potentially be exploited remotely if a malicious PDF is processed by vulnerable versions of the affected software.
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