CVE-2009-3978

Description

The nsGIFDecoder2::GifWrite function in decoders/gif/nsGIFDecoder2.cpp in libpr0n in Mozilla Firefox before 3.5.5 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an animated GIF file with a large image size, a different vulnerability than CVE-2009-3373.

4.3

CVSS

Severity: Medium

CVSS 2.0 •

EPSS 0.71% Top 30%

Affected: n/a n/a

References

Link	Tags
http://hg.mozilla.org/releases/mozilla-1.9.1/rev/edf189567edc
http://www.mozilla.com/en-US/firefox/3.5.5/releasenotes/	patch
http://www.h-online.com/open/news/item/Mozilla-fixes-critical-bugs-with-Firefox-3-5-5-852070.html	patch
https://wiki.mozilla.org/Releases/Firefox_3.5.5/Test_Plan	patch
https://bugzilla.mozilla.org/show_bug.cgi?id=525326

Frequently Asked Questions

What is the severity of CVE-2009-3978?: CVE-2009-3978 has been scored as a medium severity vulnerability.
How to fix CVE-2009-3978?: To fix CVE-2009-3978, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2009-3978 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2009-3978 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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