1. Gentoo Linux Security Advisory
| Advisory Reference | GLSA 200801-16 / maradns |
| Release Date | January 29, 2008 |
| Latest Revision | January 29, 2008: 01 |
| Impact | normal |
| Exploitable | remote |
| Package | Vulnerable versions | Unaffected versions | Architecture(s) |
| net-dns/maradns | < 1.2.12.08 | >= 1.2.12.08 | All supported architectures |
Related bugreports: #204351
MaraDNS is prone to a Denial of Service vulnerability impacting CNAME resolution.
MaraDNS is a package that implements the Domain Name Service (DNS) with resolver and caching ability.
Michael Krieger reported that a specially crafted DNS could prevent an authoritative canonical name (CNAME) record from being resolved because of an "improper rotation of resource records".
A remote attacker could send specially crafted DNS packets to a vulnerable server, making it unable to resolve CNAME records.
Add "max_ar_chain = 2" to the "marac" configuration file.
All MaraDNS users should upgrade to the latest version:
Code Listing 3.1: Resolution |
# emerge --sync # emerge --ask --oneshot --verbose ">=net-dns/maradns-1.2.12.09" |