CVE-2017-15908

NameCVE-2017-15908
DescriptionIn systemd 223 through 235, a remote DNS server can respond with a custom crafted DNS NSEC resource record to trigger an infinite loop in the dns_packet_read_type_window() function of the 'systemd-resolved' service and cause a DoS of the affected service.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium (attack range: remote)
Debian Bugs880026

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
systemd (PTS)jessie215-17+deb8u7fixed
jessie (security)215-17+deb8u8fixed
stretch232-25+deb9u6fixed
buster239-13fixed
sid239-15fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
systemdsource(unstable)235-3medium880026
systemdsourcejessie(not affected)
systemdsourcestretch232-25+deb9u2medium
systemdsourcewheezy(not affected)

Notes

[jessie] - systemd <not-affected> (Vulnerable code introduced later)
[wheezy] - systemd <not-affected> (Vulnerable code introduced later)
https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1725351
https://github.com/systemd/systemd/pull/7184
Fix: https://github.com/systemd/systemd/commit/9f939335a07085aa9a9663efd1dca06ef6405d62

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