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.
This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.9, indicating it can be exploited remotely over the network but requires specific conditions to be met without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), for affected systems. Impacting 3 products from openssl, from debian, from nodejs organizations running these solutions should prioritize assessment and patching.
First disclosed in 2017, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.
2017-12-07T16:29:00.240
2025-04-20T01:37:25.860
Deferred
CVSSv3.1: 5.9 (MEDIUM)
AV:N/AC:M/Au:N/C:P/I:N/A:N
8.6
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | openssl | openssl | 1.0.2 | Yes |
| Application | openssl | openssl | 1.0.2 | Yes |
| Application | openssl | openssl | 1.0.2 | Yes |
| Application | openssl | openssl | 1.0.2 | Yes |
| Application | openssl | openssl | 1.0.2a | Yes |
| Application | openssl | openssl | 1.0.2b | Yes |
| Application | openssl | openssl | 1.0.2c | Yes |
| Application | openssl | openssl | 1.0.2d | Yes |
| Application | openssl | openssl | 1.0.2e | Yes |
| Application | openssl | openssl | 1.0.2f | Yes |
| Application | openssl | openssl | 1.0.2g | Yes |
| Application | openssl | openssl | 1.0.2h | Yes |
| Application | openssl | openssl | 1.0.2i | Yes |
| Application | openssl | openssl | 1.0.2j | Yes |
| Application | openssl | openssl | 1.0.2k | Yes |
| Application | openssl | openssl | 1.0.2l | Yes |
| Application | openssl | openssl | 1.0.2m | Yes |
| Application | openssl | openssl | 1.1.0 | Yes |
| Application | openssl | openssl | 1.1.0a | Yes |
| Application | openssl | openssl | 1.1.0b | Yes |
| Application | openssl | openssl | 1.1.0c | Yes |
| Application | openssl | openssl | 1.1.0d | Yes |
| Application | openssl | openssl | 1.1.0e | Yes |
| Application | openssl | openssl | 1.1.0f | Yes |
| Application | openssl | openssl | 1.1.0g | Yes |
| Operating System | debian | debian_linux | 8.0 | Yes |
| Operating System | debian | debian_linux | 9.0 | Yes |
| Application | nodejs | node.js | ≤ 4.1.2 | Yes |
| Application | nodejs | node.js | < 4.8.7 | Yes |
| Application | nodejs | node.js | ≤ 6.8.1 | Yes |
| Application | nodejs | node.js | < 6.12.2 | Yes |
| Application | nodejs | node.js | ≤ 8.8.1 | Yes |
| Application | nodejs | node.js | < 8.9.3 | Yes |
| Application | nodejs | node.js | < 9.2.1 | Yes |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For openssl's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.