CVE-2017-16671
Published: 9 November 2017
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.
From the Ubuntu Security Team
It was discovered that asterisk did not properly check the length of certain input. A remote attacker could use this vulnerability to cause a denial of service (crash) or potentially execute arbitrary code.
Priority
Status
Package | Release | Status |
---|---|---|
asterisk Launchpad, Ubuntu, Debian |
artful |
Ignored
(end of life)
|
bionic |
Not vulnerable
(1:13.18.3~dfsg-1ubuntu4)
|
|
cosmic |
Not vulnerable
(1:13.18.3~dfsg-1ubuntu4)
|
|
disco |
Not vulnerable
(1:13.18.3~dfsg-1ubuntu4)
|
|
eoan |
Not vulnerable
(1:13.18.3~dfsg-1ubuntu4)
|
|
focal |
Not vulnerable
(1:13.18.3~dfsg-1ubuntu4)
|
|
groovy |
Not vulnerable
(1:13.18.3~dfsg-1ubuntu4)
|
|
hirsute |
Not vulnerable
(1:13.18.3~dfsg-1ubuntu4)
|
|
impish |
Not vulnerable
(1:13.18.3~dfsg-1ubuntu4)
|
|
jammy |
Not vulnerable
(1:13.18.3~dfsg-1ubuntu4)
|
|
trusty |
Does not exist
(trusty was not-affected [code not present])
|
|
upstream |
Released
(1:13.18.1~dfsg-1)
|
|
xenial |
Released
(1:13.1.0~dfsg-1.1ubuntu4.1+esm1)
Available with Ubuntu Pro |
|
zesty |
Ignored
(end of life)
|
|
Patches: upstream: http://downloads.asterisk.org/pub/security/AST-2017-010-13.diff |
Severity score breakdown
Parameter | Value |
---|---|
Base score | 8.8 |
Attack vector | Network |
Attack complexity | Low |
Privileges required | Low |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | High |
Availability impact | High |
Vector | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |