USN-4800-1: Lynx vulnerabilities

15 March 2021

Several security issues were fixed in Lynx.

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Releases

Packages

  • lynx - classic non-graphical (text-mode) web browser

Details

It was discovered that Lynx incorrectly handled certain URLs. A remote attacker
could possibly use this issue to obtain sensitive information or other
unspecified impact. This issue only affected Ubuntu 16.04 ESM.
(CVE-2016-9179)

It was discovered that Lynx incorrectly handled certain HTML files. A remote
attacker could possibly use this issue to obtain sensitive information.
This issue only affected Ubuntu 16.04 ESM. (CVE-2017-1000211)

Thorsten Glaser discovered that Lynx mishandles the userinfo subcomponents of
a URI. An attacker monitoring the network could discover cleartext
credentials because they may appear in SNI data. (CVE-2021-38165)

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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.

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Update instructions

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

Ubuntu 20.04
Ubuntu 18.04
Ubuntu 16.04

In general, a standard system update will make all the necessary changes.

References

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Further reading