New! Vulnerability Priority Rating (VPR)
Tenable calculates a dynamic VPR for every vulnerability. VPR combines vulnerability information with threat intelligence and machine learning algorithms to predict which vulnerabilities are most likely to be exploited in attacks. Read more about what VPR is and how it's different from CVSS.
VPR Score: 3.6
SynopsisThe remote Debian host is missing a security-related update.
DescriptionFlorian Maury from ANSSI discovered that unbound, a validating, recursive, and caching DNS resolver, was prone to a denial of service vulnerability. An attacker crafting a malicious zone and able to emit (or make emit) queries to the server can trick the resolver into following an endless series of delegations, leading to resource exhaustion and huge network usage.
SolutionUpgrade the unbound packages.
For the stable distribution (wheezy), this problem has been fixed in version 1.4.17-3+deb7u2.
For the upcoming stable distribution (jessie), this problem has been fixed in version 1.4.22-3.