MEDIUM
OpenSSL: Malformed ECParameters causes infinite loop
Published Jun 12, 2015
4.3
MEDIUMCVSS 2.0
EPSS 24.29%
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.
Affected products
No data.
OR
- ≤ 0.9.8zf
- 1.0.0
- 1.0.0
- 1.0.0
- 1.0.0
- 1.0.0
- 1.0.0
- 1.0.0a
- 1.0.0b
- 1.0.0c
- 1.0.0d
- 1.0.0e
- 1.0.0f
- 1.0.0g
- 1.0.0h
- 1.0.0i
- 1.0.0j
- 1.0.0k
- 1.0.0l
- 1.0.0m
- 1.0.0n
- 1.0.0o
- 1.0.0p
- 1.0.0q
- 1.0.0r
- 1.0.1
- 1.0.1
- 1.0.1
- 1.0.1
- 1.0.1a
- 1.0.1b
- 1.0.1c
- 1.0.1d
- 1.0.1e
- 1.0.1f
- 1.0.1g
- 1.0.1h
- 1.0.1i
- 1.0.1j
- 1.0.1k
- 1.0.1l
- 1.0.1m
- 1.0.2
- 1.0.2
- 1.0.2a
No data.
Red Hat Enterprise Linux 4
openssl
Not affected
Red Hat Enterprise Linux 5
openssl
Not affected
Red Hat Enterprise Linux 5
openssl097a
Not affected
Red Hat Enterprise Linux 6
openssl
Not affected
Red Hat Enterprise Linux 6
openssl098e
Not affected
Red Hat Enterprise Linux 7
openssl
Not affected
Red Hat Enterprise Linux 7
openssl098e
Not affected
Red Hat JBoss Enterprise Application Platform 6
openssl
Not affected
Red Hat JBoss Enterprise Web Server 1
openssl
Not affected
Red Hat JBoss Enterprise Web Server 2
openssl
Not affected
Red Hat JBoss Enterprise Web Server 3
openssl
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 4 | openssl | Not affected | n/a |
| Red Hat Enterprise Linux 5 | openssl | Not affected | n/a |
| Red Hat Enterprise Linux 5 | openssl097a | Not affected | n/a |
| Red Hat Enterprise Linux 6 | openssl | Not affected | n/a |
| Red Hat Enterprise Linux 6 | openssl098e | Not affected | n/a |
| Red Hat Enterprise Linux 7 | openssl | Not affected | n/a |
| Red Hat Enterprise Linux 7 | openssl098e | Not affected | n/a |
| Red Hat JBoss Enterprise Application Platform 6 | openssl | Not affected | n/a |
| Red Hat JBoss Enterprise Web Server 1 | openssl | Not affected | n/a |
| Red Hat JBoss Enterprise Web Server 2 | openssl | Not affected | n/a |
| Red Hat JBoss Enterprise Web Server 3 | openssl | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue does not affect the versions of openssl package as shipped with Red Hat Enterprise Linux 5, 6 and 7.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
4.3 MEDIUM NVD
AV:N/AC:M/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
24.29% 0.24288
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
EPSS probability 0.24288
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (51 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 24.29% (0.24288) | 97.80th | v5 (v2026.06.15) |
| Aug 23, 2026 | 24.45% (0.24447) | 97.75th | v5 (v2026.06.15) |
| Jun 15, 2026 | 23.22% (0.23222) | 97.48th | v5 (v2026.06.15) |
| Mar 4, 2026 | 16.10% (0.16102) | 94.65th | v4 (v2025.03.14) |
| Mar 1, 2026 | 7.88% (0.07884) | 91.90th | v4 (v2025.03.14) |
| Feb 4, 2026 | 15.28% (0.15282) | 94.44th | v4 (v2025.03.14) |
| Feb 1, 2026 | 7.88% (0.07884) | 91.84th | v4 (v2025.03.14) |
| Jan 4, 2026 | 15.28% (0.15282) | 94.40th | v4 (v2025.03.14) |
| Jan 1, 2026 | 7.88% (0.07884) | 91.79th | v4 (v2025.03.14) |
| Dec 28, 2025 | 15.28% (0.15282) | 94.40th | v4 (v2025.03.14) |
| Dec 27, 2025 | 13.11% (0.13113) | 93.92th | v4 (v2025.03.14) |
| Dec 21, 2025 | 15.28% (0.15282) | 94.39th | v4 (v2025.03.14) |
| Dec 4, 2025 | 18.88% (0.18877) | 95.05th | v4 (v2025.03.14) |
| Dec 1, 2025 | 12.99% (0.12988) | 93.84th | v4 (v2025.03.14) |
| Nov 4, 2025 | 18.88% (0.18877) | 95.03th | v4 (v2025.03.14) |
| Nov 1, 2025 | 12.99% (0.12988) | 93.81th | v4 (v2025.03.14) |
| Oct 28, 2025 | 18.88% (0.18877) | 95.02th | v4 (v2025.03.14) |
| Oct 27, 2025 | 16.32% (0.16319) | 94.58th | v4 (v2025.03.14) |
| Oct 4, 2025 | 18.88% (0.18877) | 95.06th | v4 (v2025.03.14) |
| Oct 1, 2025 | 12.99% (0.12988) | 93.85th | v4 (v2025.03.14) |
| Sep 18, 2025 | 16.32% (0.16319) | 94.62th | v4 (v2025.03.14) |
| Sep 4, 2025 | 20.14% (0.20142) | 95.29th | v4 (v2025.03.14) |
| Sep 1, 2025 | 8.98% (0.08985) | 92.33th | v4 (v2025.03.14) |
| Aug 4, 2025 | 20.14% (0.20142) | 95.27th | v4 (v2025.03.14) |
| Aug 1, 2025 | 8.98% (0.08985) | 92.31th | v4 (v2025.03.14) |
| Jul 4, 2025 | 20.42% (0.20416) | 95.26th | v4 (v2025.03.14) |
| Jul 1, 2025 | 14.15% (0.14151) | 94.07th | v4 (v2025.03.14) |
| Jun 4, 2025 | 20.42% (0.20416) | 95.22th | v4 (v2025.03.14) |
| Jun 1, 2025 | 14.15% (0.14151) | 94.03th | v4 (v2025.03.14) |
| May 9, 2025 | 20.42% (0.20416) | 95.18th | v4 (v2025.03.14) |
| May 4, 2025 | 19.14% (0.19137) | 94.98th | v4 (v2025.03.14) |
| May 1, 2025 | 13.18% (0.13183) | 93.75th | v4 (v2025.03.14) |
| Apr 10, 2025 | 19.14% (0.19137) | 94.87th | v4 (v2025.03.14) |
| Mar 30, 2025 | 15.50% (0.15504) | 94.10th | v4 (v2025.03.14) |
| Mar 29, 2025 | 19.61% (0.19610) | 92.52th | v4 (v2025.03.14) |
| Mar 28, 2025 | 15.50% (0.15504) | 94.11th | v4 (v2025.03.14) |
| Mar 27, 2025 | 19.61% (0.19610) | 94.61th | v4 (v2025.03.14) |
| Mar 20, 2025 | 15.50% (0.15504) | 94.16th | v4 (v2025.03.14) |
| Mar 19, 2025 | 19.61% (0.19610) | 94.71th | v4 (v2025.03.14) |
| Mar 17, 2025 | 15.50% (0.15504) | 94.16th | v4 (v2025.03.14) |
| Mar 8, 2025 | 66.02% (0.66015) | 98.16th | v3 (v2023.03.01) |
| Jan 22, 2025 | 59.14% (0.59138) | 97.92th | v3 (v2023.03.01) |
| Dec 17, 2024 | 57.61% (0.57614) | 97.84th | v3 (v2023.03.01) |
| Dec 12, 2024 | 55.73% (0.55726) | 97.79th | v3 (v2023.03.01) |
| May 19, 2024 | 56.71% (0.56711) | 97.69th | v3 (v2023.03.01) |
| Feb 17, 2024 | 57.77% (0.57770) | 97.61th | v3 (v2023.03.01) |
| Nov 4, 2023 | 60.84% (0.60842) | 97.43th | v3 (v2023.03.01) |
| Mar 7, 2023 | 56.30% (0.56299) | 97.08th | v3 (v2023.03.01) |
| Mar 6, 2023 | 7.56% (0.07559) | 92.87th | v2 (v2022.01.01) |
| Apr 1, 2022 | 7.56% (0.07559) | 92.17th | v2 (v2022.01.01) |
| Feb 4, 2022 | 7.56% (0.07559) | 81.11th | v2 (v2022.01.01) |
References (50)
- 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 vendor-advisory
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10694
- http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html vendor-advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00023.html vendor-advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00024.html vendor-advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00026.html vendor-advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00003.html vendor-advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00004.html vendor-advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00006.html vendor-advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00007.html vendor-advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00037.html vendor-advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00011.html vendor-advisory
- http://marc.info/?l=bugtraq&m=143880121627664&w=2 vendor-advisory
- http://marc.info/?l=bugtraq&m=144050155601375&w=2 vendor-advisory
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150612-openssl vendor-advisory
- http://www-304.ibm.com/support/docview.wss?uid=swg21960041
- http://www.debian.org/security/2015/dsa-3287 vendor-advisory
- 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 vdb-entry
- http://www.securityfocus.com/bid/91787 vdb-entry
- http://www.securitytracker.com/id/1032564 vdb-entry
- http://www.ubuntu.com/usn/USN-2639-1 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2015-1788 Vendor Advisory
- https://bto.bluecoat.com/security-advisory/sa98
- https://bugzilla.redhat.com/show_bug.cgi?id=1228600 Issue Tracking
- 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
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- https://kc.mcafee.com/corporate/index?page=content&id=SB10122
- https://nvd.nist.gov/vuln/detail/CVE-2015-1788
- https://openssl.org/news/secadv/20150611.txt
- https://security.gentoo.org/glsa/201506-02 vendor-advisory
- https://support.apple.com/kb/HT205031
- https://support.citrix.com/article/CTX216642
- https://www.cve.org/CVERecord?id=CVE-2015-1788
- https://www.openssl.org/news/secadv_20150611.txt Vendor Advisory
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Jun 12, 2015
Updated Aug 6, 2024
Reserved Feb 17, 2015
Link CVE-2015-1788
CISA Vulnrichment
Updated n/a