NULL pointer dereference in Strongswan
CVE-2021-45079
In strongSwan before 5.9.5, a malicious responder can send an EAP-Success message too early without actually authenticating the client and (in the case of EAP methods with mutual authentication and EAP-only authentication for IKEv2) even without server authentication.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.
EPSS exploit prediction
EPSS: 0.028 (86.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 86.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.028 · newest: 0.028 · change: -0.000
Affected products
- Strongswan
- Canonical Ubuntu Linux — versions 14.04, 16.04, 18.04
- Debian Linux — versions 9.0, 10.0, 11.0
- Fedoraproject Extra Packages For Enterprise Linux — versions 7.0, 8.0, 9.0
- Fedoraproject Fedora — versions 34, 35
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2021-45079?
- CVE-2021-45079 is a critical-severity vulnerability in Strongswan, classified under NULL Pointer Dereference. CVSS score: 9.1/10. Published 2022-01-31.
- How severe is CVE-2021-45079?
- Critical severity. CVSS v3 base score is 9.1 out of 10.