CVE-2018-19591
Published: 4 December 2018
In the GNU C Library (aka glibc or libc6) through 2.28, attempting to resolve a crafted hostname via getaddrinfo() leads to the allocation of a socket descriptor that is not closed. This is related to the if_nametoindex() function.
Notes
| Author | Note |
|---|---|
| ebarretto | In trusty and precise the code that introduced the issue is not present. |
| sbeattie | reproducer testcase in upstream bug report introduced in 2180fee114b778515b3f560e5ff1e795282e60b0 (2.27 cycle) |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
eglibc Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Not vulnerable
(code not present)
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
|
glibc Launchpad, Ubuntu, Debian |
bionic |
Released
(2.27-3ubuntu1.2)
|
| cosmic |
Ignored
(end of life)
|
|
| disco |
Not vulnerable
(2.29-0ubuntu2)
|
|
| eoan |
Not vulnerable
(2.29-0ubuntu2)
|
|
| focal |
Not vulnerable
(2.29-0ubuntu2)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(2.29)
|
|
| xenial |
Not vulnerable
(code not present)
|
|
|
Patches: upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=d527c860f5a3f0ed687bd03f0cb464612dc23408 upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ce6ba630dbc96f49eb1f30366aa62261df4792f9 upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=9f433fc791ca4f9d678903ff45b504b524c886fb upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=a0bc5dd3bed4b04814047265b3bcead7ab973b87 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |