Packages
- firefox - Mozilla Open Source web browser
Details
It was discovered that Firefox could be made to incorrectly accept
newlines in HTTP/3 response headers. If a user were tricked into
opening a specially crafted website, an attacker could exploit this
to conduct header splitting attacks.
It was discovered that Firefox could be made to incorrectly accept
newlines in HTTP/3 response headers. If a user were tricked into
opening a specially crafted website, an attacker could exploit this
to conduct header splitting attacks.
Update instructions
After a standard system update you need to restart Firefox to make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 21.04 hirsute | firefox – 91.0.1+build1-0ubuntu0.21.04.1 | ||
| 20.04 focal | firefox – 91.0.1+build1-0ubuntu0.20.04.1 | ||
| 18.04 bionic | firefox – 91.0.1+build1-0ubuntu0.18.04.1 | ||
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