Henning Westerholt discovered a flaw related to the Via header processing in kamailio, a very fast, dynamic and configurable SIP server. An unauthenticated attacker can take advantage of this flaw to mount a denial of service attack via a specially crafted SIP message with an invalid Via header. For the stable distribution (stretch), this problem has been fixed in version 4.4.4-2+deb9u3. We recommend that you upgrade your kamailio packages. For the detailed security status of kamailio please refer to its security tracker page at: https://security-tracker.debian.org/tracker/kamailio
Henning Westerholt discovered a flaw related to the Via header processing in kamailio, a very fast, dynamic and configurable SIP server. An unauthenticated attacker can take advantage of this flaw to mount a denial of service attack via a specially crafted SIP message with an invalid Via header.
For the stable distribution (stretch), this problem has been fixed in version 4.4.4-2+deb9u3.
We recommend that you upgrade your kamailio packages.
For the detailed security status of kamailio please refer to its security tracker page at: https://security-tracker.debian.org/tracker/kamailio
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