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             AUSCERT External Security Bulletin Redistribution

                               ESB-2023.1289
                   USN-5903-1: lighttpd vulnerabilities
                               1 March 2023

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           lighttpd
Publisher:         Ubuntu
Operating System:  Ubuntu
Resolution:        Patch/Upgrade
CVE Names:         CVE-2022-41556 CVE-2022-22707 

Original Bulletin: 
   https://ubuntu.com/security/notices/USN-5903-1

Comment: CVSS (Max):  7.5 CVE-2022-41556 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
         CVSS Source: NVD
         Calculator:  https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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USN-5903-1: lighttpd vulnerabilities

28 February 2023

Several security issues were fixed in lighttpd.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and
Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Releases

  o Ubuntu 22.10
  o Ubuntu 22.04 LTS
  o Ubuntu 20.04 LTS

Packages

  o lighttpd - fast webserver with minimal memory footprint

Details

It was discovered that lighttpd incorrectly handled certain inputs, which could
result in a stack buffer overflow. A remote attacker could possibly use this
issue to cause a denial of service (DoS). ( CVE-2022-22707 , CVE-2022-41556 )

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and
Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package
versions:

Ubuntu 22.10

  o lighttpd - 1.4.65-2ubuntu1.1

Ubuntu 22.04

  o lighttpd - 1.4.63-1ubuntu3.1

Ubuntu 20.04

  o lighttpd - 1.4.55-1ubuntu1.20.04.2

After a standard system update you need to restart lighttpd to make
all the necessary changes.

References

  o CVE-2022-41556
  o CVE-2022-22707

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