Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

CVE-2012-5821

Publication date 4 November 2012

Last updated 24 July 2024


Ubuntu priority

Cvss 3 Severity Score

5.9 · Medium

Score breakdown

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.

Read the notes from the security team

Status

Package Ubuntu Release Status
lynx 12.10 quantal Not in release
12.04 LTS precise Not in release
11.10 oneiric Not in release
10.04 LTS lucid Not in release
8.04 LTS hardy Ignored end of life
lynx-cur 12.10 quantal
Fixed 2.8.8dev.12-2ubuntu0.1
12.04 LTS precise
Fixed 2.8.8dev.9-2ubuntu0.12.04.1
11.10 oneiric
Fixed 2.8.8dev.9-2ubuntu0.11.10.1
10.04 LTS lucid
Fixed 2.8.8dev.2-1ubuntu0.1
8.04 LTS hardy Ignored end of life

Notes


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

Severity score breakdown

Parameter Value
Base score 5.9 · Medium
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

References

Related Ubuntu Security Notices (USN)

    • USN-1642-1
    • Lynx vulnerabilities
    • 29 November 2012

Other references