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CVE-2015-3193
The Montgomery squaring implementation in crypto/bn/asm/x86_64-mont5.pl in OpenSSL 1.0.2 before 1.0.2e on the x86_64 platform, as used by…
High7.5EPSS 25.1%
- Published
- Updated
- Reserved
- Assigned by
- redhat
Description
The Montgomery squaring implementation in crypto/bn/asm/x86_64-mont5.pl in OpenSSL 1.0.2 before 1.0.2e on the x86_64 platform, as used by the BN_mod_exp function, mishandles carry propagation and produces incorrect output, which makes it easier for remote attackers to obtain sensitive private-key information via an attack against use of a (1) Diffie-Hellman (DH) or (2) Diffie-Hellman Ephemeral (DHE) ciphersuite.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 25.1% · top 2.1% of all CVEs (4 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
Affected products
n/a
- affected n/a
References (22)
- 20151204 Multiple Vulnerabilities in OpenSSL (December 2015) Affecting Cisco Products (opens in a new tab)vendor-advisoryx_transferred
- https://kb.isc.org/article/AA-01438 (opens in a new tab)x_transferred
- http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html (opens in a new tab)x_transferred
- https://blog.fuzzing-project.org/31-Fuzzing-Math-miscalculations-in-OpenSSLs-BN_mod_exp-CVE-2015-3193.html (opens in a new tab)x_transferred
- http://www.fortiguard.com/advisory/openssl-advisory-december-2015 (opens in a new tab)x_transferred
- SSA:2015-349-04 (opens in a new tab)vendor-advisoryx_transferred
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html (opens in a new tab)x_transferred
- https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40100 (opens in a new tab)x_transferred
- SSA:2015-349-01 (opens in a new tab)vendor-advisoryx_transferred
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761 (opens in a new tab)x_transferred
- USN-2830-1 (opens in a new tab)vendor-advisoryx_transferred
- 78705 (opens in a new tab)vdb-entryx_transferred
- http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html (opens in a new tab)x_transferred
- 91787 (opens in a new tab)vdb-entryx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=1288317 (opens in a new tab)x_transferred
- http://openssl.org/news/secadv/20151203.txt (opens in a new tab)x_transferred
- 1034294 (opens in a new tab)vdb-entryx_transferred
- https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=d73cc256c8e256c32ed959456101b73ba9842f72 (opens in a new tab)x_transferred
- http://fortiguard.com/advisory/openssl-advisory-december-2015 (opens in a new tab)x_transferred
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05398322 (opens in a new tab)x_transferred
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759 (opens in a new tab)x_transferred
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2015-3193)Record last updated .