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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | openssl | 1.0.2b-1 | — |
| Debian 13 | openssl | 1.0.2b-1 | — |
| Debian 12 | openssl | 1.0.2b-1 | — |
| Debian 8 | openssl | 1.0.1k-3+deb8u1 | DSA-3287-1 |
| Debian 7 | openssl | 1.0.1e-2+deb7u17 | DSA-3287-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | openssl | 1.0.1f-1ubuntu2.15 | USN-2639-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | libqt4 +1 | 4.8.6-7.1 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
| SLES 12 SP1 | libqt4-devel-doc | 4.8.6-7.3 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
| SLES 12 | compat-openssl098 | 0.9.8j-78.1 | SUSE-SU-2015:1150-1 |
| SLES 12 | libqt4 +1 | 4.8.6-7.1 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
| SLES 12 | libqt4-devel-doc | 4.8.6-7.3 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
| SLES 12 | openssl | 1.0.1i-25.1 | SUSE-SU-2015:1143-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | libqt4 +1 | 4.8.6-7.1 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
| SLES for SAP 12 SP1 | libqt4-devel-doc | 4.8.6-7.3 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
| SLES for SAP 12 | libqt4 +1 | 4.8.6-7.1 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
| SLES for SAP 12 | libqt4-devel-doc | 4.8.6-7.3 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
| SLES for SAP 12 | openssl | 1.0.1i-25.1 | SUSE-SU-2015:1143-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libressl | 2.5.0-1.1 | openSUSE-SU-2024:10309-1 |
| openSUSE Tumbleweed | openssl-1_1 | 1.1.1l-1.2 | openSUSE-SU-2024:11127-1 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
-
pazhanivel07/OpenSSL_1_0_1g_CVE-2015-1788 ★ 0 · Nov 3, 2023
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 11
- USN-2639-1 openssl vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-3287-1 openssl - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10309-1 libcrypto38-2.5.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-403 Forbidden-1 Security update for OpenSSL SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1143-1 Security update for openssl SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-403 Security update for OpenSSL SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2026-0180 Dell Data Protection Advisor: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 20, 2026
- openSUSE-SU-2024:11127-1 libopenssl-1_1-devel-1.1.1l-1.2 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- SUSE-SU-2015:1150-1 Security update for compat-openssl098 SUSE / openSUSE Security Updates · May 2, 2025
- ICSA-22-349-21 Siemens SCALANCE X-200RNA Switch Devices CISA ICS & IT advisories · Dec 13, 2022
- SSA-412672 SSA-412672: Multiple OpenSSL and OpenSSH Vulnerabilities in SCALANCE X-200RNA Switch Devices before V3.2.7 Siemens ProductCERT · Dec 13, 2022
References
- SUSE-SU-2015:1184 vendor-advisory
- SSRT102180 vendor-advisory
- DSA-3287 vendor-advisory
- SUSE-SU-2015:1150 vendor-advisory
- https://kc.mcafee.com/corporate/index?page=content&id=SB10122
- http://fortiguard.com/advisory/openssl-vulnerabilities-june-2015
- HPSBMU03409 vendor-advisory
- 75158 vdb-entry
- https://openssl.org/news/secadv/20150611.txt
- http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
- http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html
- http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html
- SUSE-SU-2015:1182 vendor-advisory
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05150888
- SUSE-SU-2015:1143 vendor-advisory
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05184351
- http://www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html
- openSUSE-SU-2016:0640 vendor-advisory
- http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
- 1032564 vdb-entry
- http://www-304.ibm.com/support/docview.wss?uid=swg21960041
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05158380
- http://www.fortiguard.com/advisory/2015-06-11-fortinet-vulnerability-openssl-vulnerabilities-june-2015
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- 20150612 Multiple Vulnerabilities in OpenSSL (June 2015) Affecting Cisco Products vendor-advisory
- openSUSE-SU-2015:1277 vendor-advisory
- SUSE-SU-2015:1181 vendor-advisory
- https://github.com/openssl/openssl/commit/4924b37ee01f71ae19c94a8934b80eeb2f677932
- http://fortiguard.com/advisory/2015-07-09-cve-2015-1793-openssl-alternative-chains-certificate-forgery
- APPLE-SA-2015-08-13-2 vendor-advisory
- USN-2639-1 vendor-advisory
- http://www.fortiguard.com/advisory/openssl-vulnerabilities-june-2015
- GLSA-201506-02 vendor-advisory
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05131044
- 91787 vdb-entry
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05045763
- https://support.apple.com/kb/HT205031
- http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
- https://support.citrix.com/article/CTX216642
- SUSE-SU-2015:1185 vendor-advisory
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10694
- openSUSE-SU-2015:1139 vendor-advisory
- https://bto.bluecoat.com/security-advisory/sa98
- NetBSD-SA2015-008 vendor-advisory
- https://www.openssl.org/news/secadv_20150611.txt
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf