Auth bypass in Strongswan
CVE-2013-2944
strongSwan 4.3.5 through 5.0.3, when using the OpenSSL plugin for ECDSA signature verification, allows remote attackers to authenticate as other users via an invalid signature.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v2 metric
CVSS v2 base score 4.9 (Medium). Vector: AV:N/AC:M/Au:S/C:P/I:P/A:N. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.016 (74.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 74.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000
Affected products
- Strongswan — versions 4.3.5, 4.3.6, 4.3.7
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.strongswan.org/blog/2013/04/30/strongswan-5.0.4-released-(cve-2013-2944).ht…
- lists.opensuse.org/opensuse-updates/2013-06/msg00121.html (vendor-advisory)
- www.debian.org/security/2013/dsa-2665 (vendor-advisory)
- www.securityfocus.com/bid/59580 (vdb-entry)
- lists.opensuse.org/opensuse-updates/2013-05/msg00014.html (vendor-advisory)
- lists.opensuse.org/opensuse-updates/2013-06/msg00010.html (vendor-advisory)
- download.strongswan.org/patches/10_openssl_ecdsa_signature_patch/strongswan-4.3… (Patch)
Frequently asked questions
- What is CVE-2013-2944?
- CVE-2013-2944 is a vulnerability in Strongswan, classified under Improper Authentication. Published 2013-05-02.
- Is CVE-2013-2944 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.