[ASA-202108-9] lynx: information disclosure

[Jonas Witschel]

Arch Linux Security Advisory ASA-202108-9
=========================================

Severity: High
Date    : 2021-08-10
CVE-ID  : CVE-2021-38165
Package : lynx
Type    : information disclosure
Remote  : Yes
Link    : https://security.archlinux.org/AVG-2261

Summary
=======

The package lynx before version 2.8.9-4 is vulnerable to information
disclosure.

Resolution
==========

Upgrade to 2.8.9-4.

# pacman -Syu "lynx>=2.8.9-4"

The problem has been fixed upstream but no release is available yet.

Workaround
==========

None.

Description
===========

HTParse in Lynx through 2.8.9 mishandles the userinfo subcomponent of a
URI, which allows remote attackers to discover cleartext credentials
because they may appear in SNI data or HTTP headers.

Impact
======

A remote attacker could retrieve HTTP Basic Authentication credentials.

References
==========

https://bugs.archlinux.org/task/71764
https://lists.nongnu.org/archive/html/lynx-dev/2021-08/msg00002.html
https://lynx.invisible-island.net/current/CHANGES.html#index-v2.9.0dev.9
https://github.com/archlinux/svntogit-packages/blob/packages/lynx/trunk/CVE-2021-38165.diff
https://security.archlinux.org/CVE-2021-38165
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