CVE-2016-7055: There is a carry propagating bug in the Broadwell-specific Montgomery multiplication procedure in OpenSSL 1.0.2 and 1.1.0 before 1.1.0c that…
Noroxi assessment
Priority: Monitor (action score 27/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 14.2% (FIRST EPSS); higher than 96.6% of all records.
- Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. Special conditions such as timing or configuration are required.
- Fixed version: openssl (Alpine:v3.2) 1.0.2k-r0; openssl (Debian:12) 1.1.0c-1; openssl-1_0_0 (openSUSE:Tumbleweed) 1.0.2u-6.2.
Low priority for now. Upgrade to openssl (Alpine:v3.2) 1.0.2k-r0; openssl (Debian:12) 1.1.0c-1; openssl-1_0_0 (openSUSE:Tumbleweed) 1.0.2u-6.2 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
There is a carry propagating bug in the Broadwell-specific Montgomery multiplication procedure in OpenSSL 1.0.2 and 1.1.0 before 1.1.0c that handles input lengths divisible by, but longer than 256 bits. Analysis suggests that attacks against RSA, DSA and DH private keys are impossible. This is because the subroutine in question is not used in operations with the private key itself and an input of the attacker's direct choice. Otherwise the bug can manifest itself as transient authentication and key negotiation failures or reproducible erroneous outcome of public-key operations with specially crafted input. Among EC algorithms only Brainpool P-512 curves are affected and one presumably can attack ECDH key negotiation. Impact was not analyzed in detail, because pre-requisites for attack are considered unlikely. Namely multiple clients have to choose the curve in question and the server has to share the private key among them, neither of which is default behaviour. Even then only clients that chose the curve will be affected.
- Published
- May 4, 2017
- Updated
- Jun 16, 2026
- EPSS
- 14.2% · 96th percentile
- CWE
- —
Report tools
Action score
27
Low priority for now.
- CVSS
- 23 / 40 · 5.9 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 4 / 30 · 14.2%
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
Check your server's TLS configuration
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Run the SSL checkAffected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- nodejs node.js4.0.0 and later · up to 4.1.2 inclusive
- nodejs node.js4.2.0 and later · before 4.7.3
- nodejs node.js6.0.0 and later · up to 6.8.1 inclusive
- nodejs node.js6.9.0 and later · before 6.9.5
- nodejs node.js7.0.0 and later · before 7.5.0
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Alpine:v3.2 | openssl | from 1.0.2 · before 1.0.2k-r0 | 1.0.2k-r0 |
| Debian:12 | openssl | before 1.1.0c-1 | 1.1.0c-1 |
| openSUSE:Tumbleweed | openssl-1_0_0 | before 1.0.2u-6.2 | 1.0.2u-6.2 |
| Red Hat:jboss_core_services:1::el6 | jbcs-httpd24-apache-commons-daemon | before 0:1.1.0-1.redhat_2.1.jbcs.el6 | 0:1.1.0-1.redhat_2.1.jbcs.el6 |
| Red Hat:jboss_core_services:1::el6 | jbcs-httpd24-apache-commons-daemon-jsvc | before 1:1.1.0-1.redhat_2.jbcs.el6 | 1:1.1.0-1.redhat_2.jbcs.el6 |
| Red Hat:jboss_core_services:1::el6 | jbcs-httpd24-apache-commons-daemon-jsvc-debuginfo | before 1:1.1.0-1.redhat_2.jbcs.el6 | 1:1.1.0-1.redhat_2.jbcs.el6 |
| Red Hat:jboss_core_services:1::el6 | jbcs-httpd24-apr | before 0:1.6.3-14.jbcs.el6 | 0:1.6.3-14.jbcs.el6 |
| Red Hat:jboss_core_services:1::el6 | jbcs-httpd24-apr-debuginfo | before 0:1.6.3-14.jbcs.el6 | 0:1.6.3-14.jbcs.el6 |
| Red Hat:jboss_core_services:1::el6 | jbcs-httpd24-apr-devel | before 0:1.6.3-14.jbcs.el6 | 0:1.6.3-14.jbcs.el6 |
| Red Hat:jboss_core_services:1::el6 | jbcs-httpd24-apr-util | before 0:1.6.1-9.jbcs.el6 | 0:1.6.1-9.jbcs.el6 |
| Red Hat:jboss_core_services:1::el6 | jbcs-httpd24-apr-util-debuginfo | before 0:1.6.1-9.jbcs.el6 | 0:1.6.1-9.jbcs.el6 |
| Red Hat:jboss_core_services:1::el6 | jbcs-httpd24-apr-util-devel | before 0:1.6.1-9.jbcs.el6 | 0:1.6.1-9.jbcs.el6 |
| Red Hat:jboss_core_services:1::el6 | jbcs-httpd24-apr-util-ldap | before 0:1.6.1-9.jbcs.el6 | 0:1.6.1-9.jbcs.el6 |
| Red Hat:jboss_core_services:1::el6 | jbcs-httpd24-apr-util-mysql | before 0:1.6.1-9.jbcs.el6 | 0:1.6.1-9.jbcs.el6 |
| Red Hat:jboss_core_services:1::el6 | jbcs-httpd24-apr-util-nss | before 0:1.6.1-9.jbcs.el6 | 0:1.6.1-9.jbcs.el6 |
| Red Hat:jboss_core_services:1::el6 | jbcs-httpd24-apr-util-odbc | before 0:1.6.1-9.jbcs.el6 | 0:1.6.1-9.jbcs.el6 |
| Red Hat:jboss_core_services:1::el6 | jbcs-httpd24-apr-util-openssl | before 0:1.6.1-9.jbcs.el6 | 0:1.6.1-9.jbcs.el6 |
| Red Hat:jboss_core_services:1::el6 | jbcs-httpd24-apr-util-pgsql | before 0:1.6.1-9.jbcs.el6 | 0:1.6.1-9.jbcs.el6 |
| Red Hat:jboss_core_services:1::el6 | jbcs-httpd24-apr-util-sqlite | before 0:1.6.1-9.jbcs.el6 | 0:1.6.1-9.jbcs.el6 |
| Red Hat:jboss_core_services:1::el6 | jbcs-httpd24-httpd | before 0:2.4.29-17.jbcs.el6 | 0:2.4.29-17.jbcs.el6 |
| Red Hat:jboss_core_services:1::el6 | jbcs-httpd24-httpd-debuginfo | before 0:2.4.29-17.jbcs.el6 | 0:2.4.29-17.jbcs.el6 |
| Red Hat:jboss_core_services:1::el6 | jbcs-httpd24-httpd-devel | before 0:2.4.29-17.jbcs.el6 | 0:2.4.29-17.jbcs.el6 |
| Red Hat:jboss_core_services:1::el6 | jbcs-httpd24-httpd-manual | before 0:2.4.29-17.jbcs.el6 | 0:2.4.29-17.jbcs.el6 |
| Red Hat:jboss_core_services:1::el6 | jbcs-httpd24-httpd-selinux | before 0:2.4.29-17.jbcs.el6 | 0:2.4.29-17.jbcs.el6 |
+80
Same product
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Published before and after this one in the same product
- ← EarlierCVE-2017-3732May 4, 2017 · BN_mod_exp may produce incorrect results on x86_6428Monitor
- ← EarlierCVE-2017-3733May 4, 2017 · Encrypt-Then-Mac renegotiation crash34Monitor
- Later →CVE-2017-3735Aug 28, 2017 · While parsing an IPAddressFamily extension in an X.509 certificate, it is possible to do a one-byte overread.27Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| alpine:openssl | 1.0.2k-r0 · Alpine:v3.2 | Package registry (OSV) |
| debian:openssl | 1.1.0c-1 · Debian:12 | Package registry (OSV) |
| opensuse:openssl-1_0_0 | 1.0.2u-6.2 · openSUSE:Tumbleweed | Package registry (OSV) |
| red hat:jbcs-httpd24-apache-commons-daemon | 0:1.1.0-1.redhat_2.1.jbcs.el7 · Red Hat:jboss_core_services:1::el7 | Package registry (OSV) |
| red hat:jbcs-httpd24-apache-commons-daemon-jsvc | 1:1.1.0-1.redhat_2.jbcs.el7 · Red Hat:jboss_core_services:1::el7 | Package registry (OSV) |
| red hat:jbcs-httpd24-apache-commons-daemon-jsvc-debuginfo | 1:1.1.0-1.redhat_2.jbcs.el7 · Red Hat:jboss_core_services:1::el7 | Package registry (OSV) |
| red hat:jbcs-httpd24-apr | 0:1.6.3-14.jbcs.el7 · Red Hat:jboss_core_services:1::el7 | Package registry (OSV) |
| red hat:jbcs-httpd24-apr-debuginfo | 0:1.6.3-14.jbcs.el7 · Red Hat:jboss_core_services:1::el7 | Package registry (OSV) |
| red hat:jbcs-httpd24-apr-devel | 0:1.6.3-14.jbcs.el7 · Red Hat:jboss_core_services:1::el7 | Package registry (OSV) |
| red hat:jbcs-httpd24-apr-util | 0:1.6.1-9.jbcs.el7 · Red Hat:jboss_core_services:1::el7 | Package registry (OSV) |
| red hat:jbcs-httpd24-apr-util-debuginfo | 0:1.6.1-9.jbcs.el7 · Red Hat:jboss_core_services:1::el7 | Package registry (OSV) |
| red hat:jbcs-httpd24-apr-util-devel | 0:1.6.1-9.jbcs.el7 · Red Hat:jboss_core_services:1::el7 | Package registry (OSV) |
| red hat:jbcs-httpd24-apr-util-ldap | 0:1.6.1-9.jbcs.el7 · Red Hat:jboss_core_services:1::el7 | Package registry (OSV) |
| red hat:jbcs-httpd24-apr-util-mysql | 0:1.6.1-9.jbcs.el7 · Red Hat:jboss_core_services:1::el7 | Package registry (OSV) |
| red hat:jbcs-httpd24-apr-util-nss | 0:1.6.1-9.jbcs.el7 · Red Hat:jboss_core_services:1::el7 | Package registry (OSV) |
| suse:nodejs4 | 4.7.3-14.1 · SUSE:Linux Enterprise Module for Web and Scripting 12 | Package registry (OSV) |
| suse:nodejs6 | 6.9.5-7.1 · SUSE:Linux Enterprise Module for Web and Scripting 12 | Package registry (OSV) |
| suse:openssl | 1.0.2j-59.1 · SUSE:Linux Enterprise Desktop 12 SP2 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
Bug bounty scope
The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.
Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate.
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
—
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log (1)
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (14 more)Show less
- www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
- www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- www.securityfocus.com/bid/94242
- www.securitytracker.com/id/1037261
- access.redhat.com/errata/RHSA-2018:2185
- access.redhat.com/errata/RHSA-2018:2186
- access.redhat.com/errata/RHSA-2018:2187
- h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbgn03752en_us
- h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03744en_us
- security.FreeBSD.org/advisories/FreeBSD-SA-17:02.openssl.asc
- security.gentoo.org/glsa/201702-07
- www.openssl.org/news/secadv/20161110.txt
- www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
- www.tenable.com/security/tns-2017-04
Vendor advisories and official records. Exploit/PoC links are deliberately left out.