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CVE-2012-5821

Published: 4 November 2012

Lynx does not verify that the server's certificate is signed by a trusted certification authority, which allows man-in-the-middle attackers to spoof SSL servers via a crafted certificate, related to improper use of a certain GnuTLS function.

Notes

AuthorNote
jdstrand
2.8.8dev.13 added a call to gnutls_certificate_set_verify_flags(),
but it wasn't enough to prompt for self-signed certificates
patch submitted upstream
fixed in lynx2.8.8dev.15

Priority

Medium

Cvss 3 Severity Score

5.9

Score breakdown

Status

Package Release Status
lynx
Launchpad, Ubuntu, Debian
hardy Ignored
(end of life)
lucid Does not exist

oneiric Does not exist

precise Does not exist

quantal Does not exist

upstream Needed

lynx-cur
Launchpad, Ubuntu, Debian
hardy Ignored
(end of life)
lucid
Released (2.8.8dev.2-1ubuntu0.1)
oneiric
Released (2.8.8dev.9-2ubuntu0.11.10.1)
precise
Released (2.8.8dev.9-2ubuntu0.12.04.1)
quantal
Released (2.8.8dev.12-2ubuntu0.1)
upstream
Released (lynx2.8.8dev.15-1)

Severity score breakdown

Parameter Value
Base score 5.9
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact High
Availability impact None
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N