1. Gentoo Linux Security Advisory
| Advisory Reference | GLSA 200611-13 / avahi |
| Release Date | November 20, 2006 |
| Latest Revision | November 20, 2006: 01 |
| Impact | normal |
| Exploitable | local |
| Package | Vulnerable versions | Unaffected versions | Architecture(s) |
| net-dns/avahi | < 0.6.15 | >= 0.6.15 | All supported architectures |
Related bugreports: #154322
Avahi fails to verify the origin of netlink messages, which could allow local users to spoof network changes.
Avahi is a system that facilitates service discovery on a local network.
Avahi does not check that the netlink messages come from the kernel instead of a user-space process.
A local attacker could exploit this vulnerability by crafting malicious netlink messages and trick Avahi to react to fake network changes. This could lead users to connect to untrusted services without knowing.
There is no known workaround at this time.
All Avahi users should upgrade to the latest version:
Code Listing 3.1: Resolution |
# emerge --sync # emerge --ask --oneshot --verbose ">=net-dns/avahi-0.6.15" |