CVE-2017-3738
No exploitation reported by the sources we read.
- Published2017-12-07
- WeaknessCWE-200
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
There is an overflow bug in the AVX2 Montgomery multiplication procedure used in exponentiation with 1024-bit moduli. No EC algorithms are affected. Analysis suggests that attacks against RSA and DSA as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH1024 are considered just feasible, because most of the work necessary to deduce information about a private key may be performed offline. The amount of resources required for such an attack would be significant. However, for an attack on TLS to be meaningful, the server would have to share the DH1024 private key among multiple clients, which is no longer an option since CVE-2016-0701. This only affects processors that support the AVX2 but not ADX extensions like Intel Haswell (4th generation). Note: The impact from this issue is similar to CVE-2017-3736, CVE-2017-3732 and CVE-2015-3193. OpenSSL version 1.0.2-1.0.2m and 1.1.0-1.1.0g are affected. Fixed in OpenSSL 1.0.2n. Due to the low severity of this issue we are not issuing a new release of OpenSSL 1.1.0 at this time. The fix will be included in OpenSSL 1.1.0h when it becomes available. The fix is also available in commit e502cc86d in the OpenSSL git repository.
Timeline
dates in UTC- 2017-12-0716:29CVE publishedNVD
- 2026-10-2319:23EPSS crossed 10 %FIRST EPSS
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2017-3738?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2017-3738?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 1.0 | = 1.0.2 | no fix published | NVD |
| 1.0 | = 1.0.2a | no fix published | NVD |
| 1.0 | = 1.0.2b | no fix published | NVD |
| 1.0 | = 1.0.2c | no fix published | NVD |
| 1.0 | = 1.0.2d | no fix published | NVD |
| 1.0 | = 1.0.2e | no fix published | NVD |
| 1.0 | = 1.0.2f | no fix published | NVD |
| 1.0 | = 1.0.2g | no fix published | NVD |
| 1.0 | = 1.0.2h | no fix published | NVD |
| 1.0 | = 1.0.2i | no fix published | NVD |
| 1.0 | = 1.0.2j | no fix published | NVD |
| 1.0 | = 1.0.2k | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 9.x | ≥ 9.0.0, < 9.2.1 | 9.2.1 | NVD |
| 8.9 | ≥ 8.9.0, < 8.9.3 | 8.9.3 | NVD |
| 6.x | ≥ 6.9.0, < 6.12.2 | 6.12.2 | NVD |
| 4.x | ≥ 4.2.0, < 4.8.7 | 4.8.7 | NVD |
| 4.x | ≥ 4.0.0, ≤ 4.1.2 | no fix published | NVD |
| 6.x | ≥ 6.0.0, ≤ 6.8.1 | no fix published | NVD |
| 8.x | ≥ 8.0.0, ≤ 8.8.1 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 8.0 | = 8.0 | no fix published | NVD |
| 9.0 | = 9.0 | no fix published | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
Advisories and patches
- www.oracle.comPatch
- www.oracle.comPatch
- www.oracle.comPatch
- www.oracle.comPatch
- github.comPatch
- nodejs.orgVendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
- NVDCVSS 3.15.9read 2026-10-23
- NVDCVSS 2.04.3read 2026-10-23
- NVDweakness (CWE)CWE-200read 2026-10-23
- FIRST EPSSEPSS score13.4 %read 2026-10-23
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- Published
- 2017-12-07
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2017-3738?
Is CVE-2017-3738 actively exploited?
What is the CVSS score for CVE-2017-3738?
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