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Vulnerability record · CVE-2015-1788 · published 12 June 2015

CVE-2015-1788: Openssl vulnerability

OOpenssl · Openssl

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.

4.3 CVSS 2.0 Medium EPSS 24% · top 2.2% CWE-399 · CWE-399
4.3CVSS 2.0 base score
24%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
92References
17 Jun 2026Last modified by NVD

Description

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.

AV:N/AC:M/Au:N/C:N/I:N/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://fortiguard.com/advisory/2015-07-09-cve-2015-1793-openssl-alternative-chains-certificate-forgery
http://fortiguard.com/advisory/openssl-vulnerabilities-june-2015
http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2015-008.txt.asc
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10694
http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00023.html
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00024.html
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00026.html
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00003.html
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00004.html
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00006.html
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00007.html
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00037.html
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00011.html
http://marc.info/?l=bugtraq&m=143880121627664&w=2
http://marc.info/?l=bugtraq&m=144050155601375&w=2
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150612-openssl
http://www-304.ibm.com/support/docview.wss?uid=swg21960041
http://www.debian.org/security/2015/dsa-3287
http://www.fortiguard.com/advisory/2015-06-11-fortinet-vulnerability-openssl-vulnerabilities-june-2015
http://www.fortiguard.com/advisory/openssl-vulnerabilities-june-2015
http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
http://www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html
http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html
http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html
http://www.securityfocus.com/bid/75158
http://www.securityfocus.com/bid/91787
http://www.securitytracker.com/id/1032564
http://www.ubuntu.com/usn/USN-2639-1
https://bto.bluecoat.com/security-advisory/sa98
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
https://github.com/openssl/openssl/commit/4924b37ee01f71ae19c94a8934b80eeb2f677932
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05045763
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05131044
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05150888
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05158380
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05184351

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Source: NIST National Vulnerability Database (record CVE-2015-1788), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.