CVE-2023-4813
Published: 12 September 2023
A flaw was found in glibc. In an uncommon situation, the gaih_inet function may use memory that has been freed, resulting in an application crash. This issue is only exploitable when the getaddrinfo function is called and the hosts database in /etc/nsswitch.conf is configured with SUCCESS=continue or SUCCESS=merge.
Notes
| Author | Note |
|---|---|
Priority reason: Uncommong situation |
|
| mdeslaur | requires a non-default configuration in /etc/nsswitch.conf |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
eglibc Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| focal |
Does not exist
|
|
| jammy |
Does not exist
|
|
| lunar |
Does not exist
|
|
| mantic |
Does not exist
|
|
| noble |
Does not exist
|
|
| trusty |
Needs triage
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
|
glibc Launchpad, Ubuntu, Debian |
bionic |
Released
(2.27-3ubuntu1.6+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
| focal |
Released
(2.31-0ubuntu9.14)
|
|
| jammy |
Released
(2.35-0ubuntu3.5)
|
|
| lunar |
Not vulnerable
(2.37-0ubuntu2)
|
|
| mantic |
Not vulnerable
|
|
| noble |
Not vulnerable
|
|
| trusty |
Ignored
(end of standard support)
|
|
| upstream |
Released
(2.36-3)
|
|
| xenial |
Released
(2.23-0ubuntu11.3+esm5)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
|
Patches: upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=1c37b8022e8763fedbb3f79c02e05c6acfe5a215 upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=6e867146ee01de3ed1e94e777372093812a578e9 upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=228cdb00a045ae3b68a91b35c7548bab6029446e |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.9 |
| Attack vector | Network |
| Attack complexity | High |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |