Vulnerability in OpenSSL
CVE-2015-1788
The BN_GF2m_mod_inv function in crypto/bn/bn_gf2m.c in OpenSSL before 0.9.8s, 1.0.0 before 1.0.0e, 1.0.1 before 1.0.1n, and 1.0.2 before 1.0.2b does not properly handle ECParameters structures in which the curve is over a malformed binary polynomial field, which allows remote attackers to cause a denial of service (infinite loop) via a session that uses an Elliptic Curve algorithm, as demonstrated by an attack against a server that supports client authentication.
Published · last modified .
CVSS v2 metric
CVSS v2 base score 4.3 (Medium). Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.243 (97.8th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.244 · newest: 0.243 · change: -0.002
Affected products
- OpenSSL — versions 1.0.0, 1.0.0a, 1.0.0b
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.opensuse.org/opensuse-security-announce/2015-07/msg00006.html (vendor-advisory)
- marc.info/ (vendor-advisory)
- www.debian.org/security/2015/dsa-3287 (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2015-06/msg00026.html (vendor-advisory)
- kc.mcafee.com/corporate/index
- fortiguard.com/advisory/openssl-vulnerabilities-june-2015
- marc.info/ (vendor-advisory)
- www.securityfocus.com/bid/75158 (vdb-entry)
- openssl.org/news/secadv/20150611.txt
- www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
Frequently asked questions
- What is CVE-2015-1788?
- CVE-2015-1788 is a vulnerability in OpenSSL, classified under CWE-399. Published 2015-06-12.
- Is CVE-2015-1788 known to be exploited?
- 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.