x86_64/ecc-384-modp.asm in Nettle before 3.2 does not properly handle carry propagation and produces incorrect output in its implementation
x86_64/ecc-384-modp.asm in Nettle before 3.2 does not properly handle carry propagation and produces incorrect output in its implementation of the P-384 NIST elliptic curve, which allows attackers to have unspecified impact via unknown vectors.
- Published
- Feb 23, 2016
- Updated
- Jun 16, 2026
- EPSS
- 3.9% · 90th percentile
- CWE
- CWE-254
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Report tools
Action score
40
Plan
Add it to your regular patch cycle.
- CVSS
- 39 / 40 · 9.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 3.9%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| nettle project | nettle | cpe:2.3:a:nettle_project:nettle |
| canonical | ubuntu linux | cpe:2.3:o:canonical:ubuntu_linux |
| opensuse | leap | cpe:2.3:o:opensuse:leap |
| opensuse | opensuse | cpe:2.3:o:opensuse:opensuse |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- canonical ubuntu linux14.04
- canonical ubuntu linux15.10
- nettle project nettleup to 3.1.1 inclusive
- opensuse leap42.1
- opensuse opensuse13.1
- opensuse opensuse13.2
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | nettle | before 3.2-1 | 3.2-1 |
| Red Hat:enterprise_linux:7::client | nettle | before 0:2.7.1-8.el7 | 0:2.7.1-8.el7 |
| Red Hat:enterprise_linux:7::client | nettle-debuginfo | before 0:2.7.1-8.el7 | 0:2.7.1-8.el7 |
| Red Hat:enterprise_linux:7::client | nettle-devel | before 0:2.7.1-8.el7 | 0:2.7.1-8.el7 |
| SUSE:Linux Enterprise Desktop 12 | libnettle | before 2.7.1-9.1 | 2.7.1-9.1 |
Same product
nettle project: all recordsOther highest-scoring records for the same primary product.
- CVE-2015-8805The ecc_256_modq function in ecc-256.c in Nettle before 3.2 does not properly handle carry propagation and produces incorrect output in its 40Plan
- CVE-2015-8803The ecc_256_modp function in ecc-256.c in Nettle before 3.2 does not properly handle carry propagation and produces incorrect output in its 40Plan
- CVE-2023-36660The OCB feature in libnettle in Nettle 3.9 before 3.9.1 allows memory corruption.39Monitor
- CVE-2021-20305A flaw was found in Nettle in versions before 3.7.2, where several Nettle signature verification functions (GOST DSA, EDDSA & ECDSA) result 33Monitor
- CVE-2021-3580A flaw was found in the way nettle's RSA decryption functions handled specially crafted ciphertext.31Monitor
- CVE-2018-16869A Bleichenbacher type side-channel based padding oracle attack was found in the way nettle handles endian conversion of RSA decrypted PKCS#122Monitor
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 |
|---|---|---|
| debian:nettle | 3.2-1 · Debian:12 | Package registry (OSV) |
| red hat:nettle | 0:2.7.1-8.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:nettle-debuginfo | 0:2.7.1-8.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:nettle-devel | 0:2.7.1-8.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| suse:libnettle | 2.7.1-9.1 · SUSE:Linux Enterprise Desktop 12 | 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.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
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.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-254 · 7PK - Security FeaturesCVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- lists.opensuse.org/opensuse-updates/2016-02/msg00091.html
- lists.opensuse.org/opensuse-updates/2016-02/msg00093.html
- lists.opensuse.org/opensuse-updates/2016-02/msg00100.html
- rhn.redhat.com/errata/RHSA-2016-2582.html
- www.openwall.com/lists/oss-security/2016/02/02/2
- www.openwall.com/lists/oss-security/2016/02/03/1
- www.ubuntu.com/usn/USN-2897-1
- blog.fuzzing-project.org/38-Miscomputations-of-elliptic-curve-scalar-multiplications-in-Nettle.html
- git.lysator.liu.se/nettle/nettle/commit/fa269b6ad06dd13c901dbd84a12e52b918a09cd7
- lists.gnu.org/archive/html/info-gnu/2016-01/msg00006.html
- lists.lysator.liu.se/pipermail/nettle-bugs/2015/003024.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.