QID 198470

Date Published: 2021-09-06

QID 198470: Ubuntu Security Notification for Firefox Vulnerability (USN-5047-1)

Firefox could be made to incorrectly accept newlines in http/3 response headers.

Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

if a user were tricked into opening a specially crafted website, an attacker could exploit this to conduct header splitting attacks..

  • CVSS V3 rated as Medium - 4.2 severity.
  • CVSS V2 rated as Medium - 5.4 severity.
    • Solution
    Refer to Ubuntu advisory: USN-5047-1 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 198470

    CVE-2021-29991 |
    Software Advisories
    Advisory ID Software Component Link
    USN-5047-1 Ubuntu Linux URL Logo usn.ubuntu.com/5047-1
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