CVE-2009-3978 Null dereference in n/a

What is CVE-2009-3978?

CVE-2009-3978 is a medium-severity vulnerability in Mozilla Firefox, published on 19 Nov 2009. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official 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.

Which versions are affected by CVE-2009-3978?

It affects 1 product.

Products include Mozilla Firefox.

How do I fix CVE-2009-3978?

No fix has been published for CVE-2009-3978 yet. Limit exposure of the affected software until one is available.

Is CVE-2009-3978 being exploited?

There is no known exploitation of CVE-2009-3978 in the wild and no public exploit code.

Other vulnerabilities in Mozilla Firefox

• CVE-2019-11708 Mozilla Firefox and Thunderbird Sandbox Escape Exploited Critical 10.0
• CVE-2010-3765 Mozilla Multiple Products Remote Code Execution Exploited Critical 9.8
• CVE-2022-26486 Mozilla Firefox Use-After-Free Exploited Critical 9.6
• CVE-2022-26485 Mozilla Firefox Use-After-Free Exploited High 8.8
• CVE-2019-11707 Mozilla Firefox and Thunderbird Type Confusion Exploited High 8.8

All Mozilla Firefox vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-8w37-959h-v45j.