{"id":"CVE-2017-16671","aliases":["DEBIAN-CVE-2017-16671","EUVD-2017-7855","GHSA-6vm7-9fw2-vx89","UBUNTU-CVE-2017-16671","USN-4814-1"],"status":"published","title":"A Buffer Overflow issue was discovered in Asterisk Open Source 13 before 13.18.1, 14 before 14.7...","description":"A Buffer Overflow issue was discovered in Asterisk Open Source 13 before 13.18.1, 14 before 14.7.1, and 15 before 15.1.1 and Certified Asterisk 13.13 before 13.13-cert7. No size checking is done when setting the user field for Party B on a CDR. Thus, it is possible for someone to use an arbitrarily large string and write past the end of the user field storage buffer. NOTE: this is different from CVE-2017-7617, which was only about the Party A buffer.","severity":{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.04169,"percentile":0.90959,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-119"],"published":"2017-11-09T00:00:00Z","modified":"2026-10-24T10:30:40Z","fixes":[{"ecosystem":"Debian:14","package":"asterisk","fixed_in":["1:13.18.1~dfsg-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:16.04:LTS","package":"asterisk","fixed_in":["1:13.1.0~dfsg-1.1ubuntu4.1+esm1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:14","package":"asterisk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:13.18.1~dfsg-1"}]}],"versions":["0.1.11-3","0.1.11-3woody1","1:1.0.5-2","1:1.0.5-4","1:1.0.6-1","1:1.0.6-2","1:1.0.7-1","1:1.0.7.dfsg.1-1","1:1.0.7.dfsg.1-2","1:1.0.7.dfsg.1-2sarge1","1:1.0.7.dfsg.1-2sarge2","1:1.0.7.dfsg.1-2sarge3","1:1.0.7.dfsg.1-2sarge4","1:1.0.7.dfsg.1-2sarge5","1:1.0.7.dfsg.1-2sarge6","1:1.0.9.dfsg-1","1:1.0.9.dfsg-3","1:1.0.9.dfsg-4","1:1.0.9.dfsg-5","1:1.0.9.dfsg-6","1:1.2.0-beta1.dfsg-1","1:1.2.0-beta2.dfsg-1","1:1.2.0-beta2.dfsg-2","1:1.2.0-beta2.dfsg-3","1:1.2.0-rc1.dfsg-1","1:1.2.0-rc2.dfsg-1","1:1.2.0.dfsg-1","1:1.2.0.dfsg-2","1:1.2.0.dfsg-3","1:1.2.0.dfsg-4","1:1.2.0.dfsg-5","1:1.2.0.dfsg-6","1:1.2.1.dfsg-1","1:1.2.1.dfsg-2","1:1.2.1.dfsg-3","1:1.2.10.dfsg-1","1:1.2.10.dfsg-1bpo1","1:1.2.10.dfsg-2","1:1.2.10.dfsg-3","1:1.2.11.dfsg-1","1:1.2.12.1.dfsg-1","1:1.2.13~dfsg-1","1:1.2.13~dfsg-2","1:1.2.13~dfsg-2etch1","1:1.2.13~dfsg-2etch2","1:1.2.13~dfsg-2etch3","1:1.2.13~dfsg-2etch4","1:1.2.14~dfsg-1","1:1.2.14~dfsg-2","1:1.2.14~dfsg-3","1:1.2.14~dfsg-4","1:1.2.15~dfsg-1","1:1.2.16~dfsg-1","1:1.2.17~dfsg-1","1:1.2.4.dfsg-1","1:1.2.4.dfsg-2","1:1.2.4.dfsg-3","1:1.2.4.dfsg-4","1:1.2.4.dfsg-5","1:1.2.4.dfsg-6","1:1.2.4.dfsg-6+b1","1:1.2.4.dfsg-7","1:1.2.7.1.dfsg-1","1:1.2.7.1.dfsg-2","1:1.2.7.1.dfsg-3","1:1.2.9.1.dfsg-1","1:1.4.10~dfsg-1","1:1.4.11~dfsg-1","1:1.4.11~dfsg-2","1:1.4.11~dfsg-3","1:1.4.11~dfsg-4","1:1.4.13~dfsg-1","1:1.4.15~dfsg-1","1:1.4.16.2~dfsg-1","1:1.4.16.2~dfsg-2","1:1.4.17~dfsg-1","1:1.4.17~dfsg-2","1:1.4.18.1~dfsg-1","1:1.4.18~dfsg-1","1:1.4.19.1~dfsg-1","1:1.4.20~dfsg-1","1:1.4.21.1~dfsg-1","1:1.4.21.2~dfsg-1","1:1.4.21.2~dfsg-2","1:1.4.21.2~dfsg-3","1:1.4.21.2~dfsg-3+lenny1","1:1.4.21.2~dfsg-3+lenny2","1:1.4.21.2~dfsg-3+lenny2.1","1:1.4.21.2~dfsg-3+lenny3","1:1.4.21.2~dfsg-3+lenny5","1:1.4.21.2~dfsg-3+lenny6","1:1.4.21.2~dfsg-3.1","1:1.4.2~dfsg-1","1:1.4.2~dfsg-2","1:1.4.2~dfsg-3","1:1.4.2~dfsg-4","1:1.4.2~dfsg-5","1:1.4.3~dfsg-1","1:1.4.4~dfsg-1","1:1.4.4~dfsg-2","1:1.4.4~dfsg-3","1:1.4.5~dfsg-1","1:1.4.6~dfsg-1","1:1.4.8~dfsg-1","1:1.4.8~dfsg-2","1:1.4.9~dfsg-1","1:1.6.1.0~dfsg-1","1:1.6.1.0~dfsg~rc3-1","1:1.6.2.0-1","1:1.6.2.0~dfsg~beta3-1","1:1.6.2.0~dfsg~rc1-1","1:1.6.2.0~rc3-1","1:1.6.2.0~rc3-2","1:1.6.2.0~rc6-1","1:1.6.2.0~rc7-1","1:1.6.2.2-1","1:1.6.2.6-1","1:1.6.2.7-1","1:1.6.2.9-1","1:1.6.2.9-1~bpo50+1","1:1.6.2.9-1~bpo50+2","1:1.6.2.9-1~bpo50+3","1:1.6.2.9-2","1:1.6.2.9-2+squeeze1","1:1.6.2.9-2+squeeze10","1:1.6.2.9-2+squeeze11","1:1.6.2.9-2+squeeze12","1:1.6.2.9-2+squeeze2","1:1.6.2.9-2+squeeze3","1:1.6.2.9-2+squeeze4","1:1.6.2.9-2+squeeze5","1:1.6.2.9-2+squeeze6","1:1.6.2.9-2+squeeze7","1:1.6.2.9-2+squeeze8","1:1.6.2.9-2+squeeze9","1:1.8.10.0~dfsg-1","1:1.8.10.1~dfsg-1","1:1.8.11.1~dfsg-1","1:1.8.13.0~dfsg-1","1:1.8.13.0~dfsg-1~bpo60+1","1:1.8.13.1~dfsg-1","1:1.8.13.1~dfsg-1+powerpcspe1","1:1.8.13.1~dfsg-1~bpo60+1","1:1.8.13.1~dfsg-2","1:1.8.13.1~dfsg-3","1:1.8.3.3-1","1:1.8.4-1","1:1.8.4.2-1","1:1.8.4.3-1","1:1.8.4.4~dfsg-1","1:1.8.4.4~dfsg-2","1:1.8.7.1~dfsg-1","1:1.8.7.1~dfsg-2","1:1.8.7.1~dfsg-3","1:1.8.8.0~dfsg-1","1:1.8.8.2~dfsg-1","1:11.10.0~dfsg-1","1:11.10.0~dfsg-1~bpo70+1","1:11.10.2~dfsg-1","1:11.10.2~dfsg-1~bpo70+1","1:11.11.0~dfsg-1","1:11.11.0~dfsg-1~bpo70+1","1:11.11.0~dfsg-2","1:11.12.0~dfsg-1","1:11.12.0~dfsg-1~bpo70+1","1:11.12.1~dfsg-1","1:11.13.0~dfsg-1","1:11.13.0~dfsg-1~bpo70+1","1:11.13.1~dfsg-1","1:11.13.1~dfsg-2","1:11.13.1~dfsg-2~bpo70+1","1:11.5.1~dfsg-1","1:11.5.1~dfsg-2","1:11.5.1~dfsg1-1","1:11.5.1~dfsg1-1~bpo70+1","1:11.6.0~dfsg-1","1:11.6.0~dfsg-2","1:11.6.0~dfsg-3","1:11.7.0~dfsg-1","1:11.7.0~dfsg-1+e1","1:11.7.0~dfsg-1~bpo70+1","1:11.8.0~dfsg-1","1:11.8.0~dfsg-2","1:11.8.1~dfsg-1","1:11.8.1~dfsg-1~bpo70+1","1:11.9.0~dfsg-1","1:11.9.0~dfsg-2","1:11.9.0~dfsg-2~bpo70+1","1:13.0.0~dfsg-1","1:13.0.0~dfsg-2","1:13.1.0~dfsg-1","1:13.1.0~dfsg-1.1","1:13.10.0~dfsg-1","1:13.11.2~dfsg-1","1:13.12.1~dfsg-1","1:13.12.2~dfsg-1","1:13.12.2~dfsg-2","1:13.13.1~dfsg-1","1:13.13.1~dfsg-2","1:13.13.1~dfsg-3","1:13.13.1~dfsg-3~exp1","1:13.13.1~dfsg-4","1:13.14.0~dfsg-1","1:13.14.0~dfsg-1~exp1","1:13.14.1~dfsg-1","1:13.14.1~dfsg-2","1:13.17.0~dfsg-1","1:13.17.0~dfsg-2","1:13.17.1~dfsg-1","1:13.17.2~dfsg-1","1:13.17.2~dfsg-2","1:13.7.2~dfsg-1","1:13.8.0~dfs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Party Advisory","VDB Entry","advisory"]},{"url":"http://downloads.digium.com/pub/security/AST-2017-010.html","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory","report"]},{"url":"https://security.gentoo.org/glsa/201811-11","tags":["vendor-advisory","x_refsource_GENTOO","x_transferred","advisory"]},{"url":"https://www.debian.org/security/2017/dsa-4076","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","advisory"]},{"url":"https://issues.asterisk.org/jira/browse/ASTERISK-27337","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","Vendor Advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-16671"},{"url":"https://github.com/advisories/GHSA-6vm7-9fw2-vx89"},{"url":"https://security-tracker.debian.org/tracker/CVE-2017-16671","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2017-16671","tags":["report"]},{"url":"http://downloads.asterisk.org/pub/security/AST-2017-010-13.diff","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2017-16671","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-4814-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2017-7617","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2017-16671","description":"A Buffer Overflow issue was discovered in Asterisk Open Source 13 before 13.18.1, 14 before 14.7.1, and 15 before 15.1.1 and Certified Asterisk 13.13 before 13.13-cert7. No size checking is done when setting the user field for Party B on a CDR. Thus, it is possible for someone to use an arbitrarily large string and write past the end of the user field storage buffer. NOTE: this is different from CVE-2017-7617, which was only about the Party A buffer.","status":"published","published":"2017-11-09T00:00:00Z","modified":"2024-08-05T20:35:19.933Z","updated_at":"2026-11-02T14:33:21.453505Z"}],"euvd":[{"id":"EUVD-2017-7855","description":"A Buffer Overflow issue was discovered in Asterisk Open Source 13 before 13.18.1, 14 before 14.7.1, and 15 before 15.1.1 and Certified Asterisk 13.13 before 13.13-cert7. No size checking is done when setting the user field for Party B on a CDR. Thus, it is possible for someone to use an arbitrarily large string and write past the end of the user field storage buffer. NOTE: this is different from CVE-2017-7617, which was only about the Party A buffer.","status":"published","published":"2017-11-09T00:00:00Z","modified":"2024-08-05T20:35:19Z","updated_at":"2026-11-03T02:23:11.972603Z"}],"ghsa":[{"id":"GHSA-6vm7-9fw2-vx89","title":"A Buffer Overflow issue was discovered in Asterisk Open Source 13 before 13.18.1, 14 before 14.7...","description":"A Buffer Overflow issue was discovered in Asterisk Open Source 13 before 13.18.1, 14 before 14.7.1, and 15 before 15.1.1 and Certified Asterisk 13.13 before 13.13-cert7. No size checking is done when setting the user field for Party B on a CDR. Thus, it is possible for someone to use an arbitrarily large string and write past the end of the user field storage buffer. NOTE: this is different from CVE-2017-7617, which was only about the Party A buffer.","status":"published","published":"2022-05-14T01:56:40Z","modified":"2023-02-02T05:04:50Z","cvss":[{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:51:58.308794Z"}],"nvd":[{"id":"CVE-2017-16671","description":"A Buffer Overflow issue was discovered in Asterisk Open Source 13 before 13.18.1, 14 before 14.7.1, and 15 before 15.1.1 and Certified Asterisk 13.13 before 13.13-cert7. No size checking is done when setting the user field for Party B on a CDR. Thus, it is possible for someone to use an arbitrarily large string and write past the end of the user field storage buffer. NOTE: this is different from CVE-2017-7617, which was only about the Party A buffer.","status":"published","published":"2017-11-09T00:29:00.473Z","modified":"2026-06-17T01:09:39.153Z","cvss":[{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:04:08.635428Z"}],"osv":[{"id":"CVE-2017-16671","description":"A Buffer Overflow issue was discovered in Asterisk Open Source 13 before 13.18.1, 14 before 14.7.1, and 15 before 15.1.1 and Certified Asterisk 13.13 before 13.13-cert7. No size checking is done when setting the user field for Party B on a CDR. Thus, it is possible for someone to use an arbitrarily large string and write past the end of the user field storage buffer. NOTE: this is different from CVE-2017-7617, which was only about the Party A buffer.","status":"published","published":"2017-11-09T00:29:00.473Z","modified":"2026-10-24T10:30:40.064724183Z","cvss":[{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:04.853379Z"},{"id":"DEBIAN-CVE-2017-16671","description":"A Buffer Overflow issue was discovered in Asterisk Open Source 13 before 13.18.1, 14 before 14.7.1, and 15 before 15.1.1 and Certified Asterisk 13.13 before 13.13-cert7. No size checking is done when setting the user field for Party B on a CDR. Thus, it is possible for someone to use an arbitrarily large string and write past the end of the user field storage buffer. NOTE: this is different from CVE-2017-7617, which was only about the Party A buffer.","status":"published","published":"2017-11-09T00:29:00.473Z","modified":"2026-09-01T20:03:44.958968517Z","cvss":[{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:28.801885Z"},{"id":"UBUNTU-CVE-2017-16671","description":"A Buffer Overflow issue was discovered in Asterisk Open Source 13 before 13.18.1, 14 before 14.7.1, and 15 before 15.1.1 and Certified Asterisk 13.13 before 13.13-cert7. No size checking is done when setting the user field for Party B on a CDR. Thus, it is possible for someone to use an arbitrarily large string and write past the end of the user field storage buffer. NOTE: this is different from CVE-2017-7617, which was only about the Party A buffer.","status":"published","published":"2017-11-09T00:29:00Z","modified":"2026-04-22T11:18:54.548459Z","cvss":[{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:14.563448Z"},{"id":"USN-4814-1","title":"asterisk vulnerabilities","description":"Richard Mudgett discovered that Asterisk did not properly check the length\nof input string when setting the user field for PartyB on a CDR. A remote\nattacker could use this vulnerability to cause a denial of service (crash)\nor potentially execute arbitrary code. (CVE-2017-16671)\n\nAlex Villacis Lasso discovered that Asterisk did not properly check the\nlength of input string when setting the user field for PartyA on a CDR. A\nremote attacker could use this vulnerability to cause a denial of service\n(crash) or potentially execute arbitrary code. (CVE-2017-7617)","status":"published","published":"2021-03-15T21:49:02Z","modified":"2026-06-25T13:30:29.510818925Z","updated_at":"2026-11-02T16:58:15.159055Z"}]}}