Richard Mudgett

**Name of the Vulnerable Software and Affected Versions** Asterisk Open Source versions 13.0.0 through 13.18.0 Asterisk Open Source versions 14.0.0 through 14.7.0 Asterisk Open Source versions 15.0.0 through 15.1.0 Certified Asterisk versions 13.13-cert0 through 13.13-cert6 **Description** A Buffer Overflow issue was discovered. No size checking is done when setting the `user` field for Party B on a CDR, allowing someone to use an arbitrarily large string and write past the end of the `user` field storage buffer. **Recommendations** For Asterisk Open Source versions 13.0.0 through 13.18.0, update to version 13.18.1 or later. For Asterisk Open Source versions 14.0.0 through 14.7.0, update to version 14.7.1 or later. For Asterisk Open Source versions 15.0.0 through 15.1.0, update to version 15.1.1 or later. For Certified Asterisk versions 13.13-cert0 through 13.13-cert6, update to version 13.13-cert7 or later.

**Name of the Vulnerable Software and Affected Versions** Asterisk versions 11.x through 11.25.2 Asterisk versions 13.x through 13.17.1 Asterisk versions 14.x through 14.6.1 Certified Asterisk versions 11.x through 11.6-cert17 Certified Asterisk versions 13.x through 13.13-cert5 **Description** The issue is related to insufficient RTCP packet validation, which could allow reading stale buffer contents. When combined with the `nat` and `symmetric rtp` options, it allows redirecting where Asterisk sends the next RTCP report. **Recommendations** For Asterisk versions 11.x through 11.25.2, update to version 11.25.3 or later. For Asterisk versions 13.x through 13.17.1, update to version 13.17.2 or later. For Asterisk versions 14.x through 14.6.1, update to version 14.6.2 or later. For Certified Asterisk versions 11.x through 11.6-cert17, update to version 11.6-cert18 or later. For Certified Asterisk versions 13.x through 13.13-cert5, update to version 13.13-cert6 or later.