CVE-2015-8023
Description
The server implementation of the EAP-MSCHAPv2 protocol in the eap-mschapv2 plugin in strongSwan 4.2.12 through 5.x before 5.3.4 does not properly validate local state, which allows remote attackers to bypass authentication via an empty Success message in response to an initial Challenge message.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| ubuntu | 14.04 | affected | |
| ubuntu | 15.04 | affected | |
| ubuntu | 15.10 | affected | |
| debian | bookworm | fixed | 5.3.3-3 |
| debian | bullseye | fixed | 5.3.3-3 |
| debian | forky | fixed | 5.3.3-3 |
| debian | sid | fixed | 5.3.3-3 |
| debian | trixie | fixed | 5.3.3-3 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| strongswan | strongswan | 4.2.12 | |
| strongswan | strongswan | 4.2.13 | |
| strongswan | strongswan | 4.2.14 | |
| strongswan | strongswan | 4.2.15 | |
| strongswan | strongswan | 4.2.16 | |
| strongswan | strongswan | 4.3.0 | |
| strongswan | strongswan | 4.3.1 | |
| strongswan | strongswan | 4.3.2 | |
| strongswan | strongswan | 4.3.3 | |
| strongswan | strongswan | 4.3.4 | |
| strongswan | strongswan | 4.3.5 | |
| strongswan | strongswan | 4.3.6 | |
| strongswan | strongswan | 4.3.7 | |
| strongswan | strongswan | 4.4.0 | |
| strongswan | strongswan | 4.4.1 | |
| strongswan | strongswan | 4.5.0 | |
| strongswan | strongswan | 4.5.1 | |
| strongswan | strongswan | 4.5.2 | |
| strongswan | strongswan | 4.5.3 | |
| strongswan | strongswan | 4.6.0 | |
| strongswan | strongswan | 4.6.1 | |
| strongswan | strongswan | 4.6.2 | |
| strongswan | strongswan | 4.6.3 | |
| strongswan | strongswan | 4.6.4 | |
| strongswan | strongswan | 5.0.0 | |
| strongswan | strongswan | 5.0.1 | |
| strongswan | strongswan | 5.0.2 | |
| strongswan | strongswan | 5.0.3 | |
| strongswan | strongswan | 5.0.4 | |
| strongswan | strongswan | 5.1.0 | |
| strongswan | strongswan | 5.1.1 | |
| strongswan | strongswan | 5.1.2 | |
| strongswan | strongswan | 5.1.3 | |
| strongswan | strongswan | 5.2.0 | |
| strongswan | strongswan | 5.2.1 | |
| strongswan | strongswan | 5.2.2 | |
| strongswan | strongswan | 5.2.3 | |
| strongswan | strongswan | 5.3.0 | |
| strongswan | strongswan | 5.3.1 | |
| strongswan | strongswan | 5.3.2 | |
| strongswan | strongswan | 5.3.3 | |
References
- https://www.suse.com/security/cve/CVE-2015-8023.html
- http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00025.html
- http://lists.opensuse.org/opensuse-updates/2015-11/msg00139.html
- http://www.debian.org/security/2015/dsa-3398
- http://www.securityfocus.com/bid/84947
- http://www.ubuntu.com/usn/USN-2811-1
- https://www.strongswan.org/blog/2015/11/16/strongswan-vulnerability-%28cve-2015-8023%29.html
- https://security-tracker.debian.org/tracker/CVE-2015-8023
CWEs
CWE-20 CWE-264
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.