CVE-2022-3602
Published: 1 November 2022
A buffer overrun can be triggered in X.509 certificate verification, specifically in name constraint checking. Note that this occurs after certificate chain signature verification and requires either a CA to have signed the malicious certificate or for the application to continue certificate verification despite failure to construct a path to a trusted issuer. An attacker can craft a malicious email address to overflow four attacker-controlled bytes on the stack. This buffer overflow could result in a crash (causing a denial of service) or potentially remote code execution. Many platforms implement stack overflow protections which would mitigate against the risk of remote code execution. The risk may be further mitigated based on stack layout for any given platform/compiler. Pre-announcements of CVE-2022-3602 described this issue as CRITICAL. Further analysis based on some of the mitigating factors described above have led this to be downgraded to HIGH. Users are still encouraged to upgrade to a new version as soon as possible. In a TLS client, this can be triggered by connecting to a malicious server. In a TLS server, this can be triggered if the server requests client authentication and a malicious client connects. Fixed in OpenSSL 3.0.7 (Affected 3.0.0,3.0.1,3.0.2,3.0.3,3.0.4,3.0.5,3.0.6).
Notes
Author | Note |
---|---|
mdeslaur | 3.x only Ubuntu packages are built with stack protector, reducing the impact of this CVE from remote code execution to a denial of service. |
Priority
Status
Package | Release | Status |
---|---|---|
edk2 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
|
focal |
Not vulnerable
|
|
jammy |
Not vulnerable
|
|
kinetic |
Not vulnerable
|
|
lunar |
Not vulnerable
|
|
trusty |
Ignored
(out of standard support)
|
|
upstream |
Needs triage
|
|
xenial |
Needs triage
|
|
nodejs Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(uses system openssl1.0)
|
focal |
Not vulnerable
(uses system openssl1.1)
|
|
jammy |
Not vulnerable
(uses openssl 1.1)
|
|
kinetic |
Not vulnerable
(uses system openssl)
|
|
lunar |
Not vulnerable
(uses system openssl)
|
|
trusty |
Not vulnerable
(uses system openssl)
|
|
upstream |
Needs triage
|
|
xenial |
Not vulnerable
(uses system openssl)
|
|
openssl Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(1.1.1-1ubuntu2.1~18.04.20)
|
focal |
Not vulnerable
(1.1.1f-1ubuntu2.16)
|
|
jammy |
Released
(3.0.2-0ubuntu1.7)
|
|
kinetic |
Released
(3.0.5-2ubuntu2)
|
|
lunar |
Released
(3.0.5-2ubuntu2)
|
|
trusty |
Not vulnerable
|
|
upstream |
Released
(3.0.7-1)
|
|
xenial |
Not vulnerable
|
|
This vulnerability is mitigated in part by the use of gcc's stack protector in Ubuntu. | ||
openssl1.0 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
|
focal |
Does not exist
|
|
jammy |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Does not exist
|
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |