Description
The ssl3_get_key_exchange function in ssl/s3_clnt.c in OpenSSL 1.0.2 before 1.0.2e allows remote servers to cause a denial of service (segmentation fault) via a zero p value in an anonymous Diffie-Hellman (DH) ServerKeyExchange message.
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 | 1.0.2e-1 | — |
| Debian 13 | openssl | 1.0.2e-1 | — |
| Debian 12 | openssl | 1.0.2e-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | openssl | 1.0.1f-1ubuntu2.16 | USN-2830-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | openssl-1_1 | 1.1.1l-1.2 | openSUSE-SU-2024:11127-1 |
Advisories 4
- USN-2830-1 openssl vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 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
- 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
- 20151204 Multiple Vulnerabilities in OpenSSL (December 2015) Affecting Cisco Products vendor-advisory
- SSA:2015-349-04 vendor-advisory
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761
- USN-2830-1 vendor-advisory
- http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html
- http://openssl.org/news/secadv/20151203.txt
- https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=ada57746b6b80beae73111fe1291bf8dd89af91c
- 1034294 vdb-entry
- openSUSE-SU-2016:0637 vendor-advisory
- http://fortiguard.com/advisory/openssl-advisory-december-2015
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05398322
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf