Vulnerability · Published Apr 14, 2023 · Assigned by mitre
CVE-2023-26463
Critical 9.8
In plain English
A critical-severity null pointer dereference in the strongswan package (Alpine). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.3% (higher than 83% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
strongSwan 5.9.8 and 5.9.9 potentially allows remote code execution because it uses a variable named "public" for two different purposes within the same function. There is initially incorrect access control, later followed by an expired pointer dereference. One attack vector is sending an untrusted client certificate during EAP-TLS. A server is affected only if it loads plugins that implement TLS-based EAP methods (EAP-TLS, EAP-TTLS, EAP-PEAP, or EAP-TNC). This is fixed in 5.9.10.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | strongswan | 5.9.10-r0 | ALPINE-CVE-2023-26463 |
| Alpine:v3.21 | strongswan | 5.9.10-r0 | ALPINE-CVE-2023-26463 |
| Alpine:v3.22 | strongswan | 5.9.10-r0 | ALPINE-CVE-2023-26463 |
| Alpine:v3.23 | strongswan | 5.9.10-r0 | ALPINE-CVE-2023-26463 |
| Alpine:v3.24 | strongswan | 5.9.10-r0 | ALPINE-CVE-2023-26463 |
| Debian:12 | strongswan | 5.9.8-4 | DEBIAN-CVE-2023-26463 |
| Debian:13 | strongswan | 5.9.8-4 | DEBIAN-CVE-2023-26463 |
| Debian:14 | strongswan | 5.9.8-4 | DEBIAN-CVE-2023-26463 |
Affected products (as reported)
Weakness: CWE-476, CWE-295 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H