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Ubuntu 17.04 USN-3341-1 Urgent: Exploit in Systemd DNS Vulnerability

ubuntu
Calendar Grey June 27, 2017
Dist Ubuntu Esm H88
The Ubuntu Security Notice USN-3342-1 announces vulnerabilities in OpenSSL, affecting various releases that require urgent attention through security patches.
systemd-resolved could be made to crash or run programs if it received a specially crafted DNS response.

Summary

systemd-resolved could be made to crash or run programs if it received

a specially crafted DNS response.

Software Description:

- systemd: system and service manager

Details:

An out-of-bounds write was discovered in systemd-resolved when handling

specially crafted DNS responses. A remote attacker could potentially

exploit this to cause a denial of service (daemon crash) or execute

arbitrary code. (CVE-2017-9445)

Topics%20covered

Topics Covered

security advisory denial of service update critical ubuntu dns exploit systemd

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 17.04:
  systemd                         232-21ubuntu5

Ubuntu 16.10:
  systemd                         231-9ubuntu5

In general, a standard system update will make all the necessary changes.

References

CVE-2017-9445, https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1695546

Severity
critical
Lowest
Low
Medium
High
Critical

June 27, 2017

Topics%20covered

Topics Covered

security advisory denial of service update critical ubuntu dns exploit systemd

Package Information

https://launchpad.net/ubuntu/+source/systemd/232-21ubuntu5
https://launchpad.net/ubuntu/+source/systemd/231-9ubuntu5

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