OpenSSL 1.0.2 (starting from version 1.0.2b) introduced an "error state" mechanism. The intent was that if a fatal error occurred during a handshake then OpenSSL would move into the error state and would immediately fail if you attempted to continue the handshake. This works as designed for the explicit handshake functions (SSL_do_handshake(), SSL_accept() and SSL_connect()), however due to a bug it does not work correctly if SSL_read() or SSL_write() is called directly. In that scenario, if the handshake fails then a fatal error will be returned in the initial function call. If SSL_read()/SSL_write() is subsequently called by the application for the same SSL object then it will succeed and the data is passed without being decrypted/encrypted directly from the SSL/TLS record layer. In order to exploit this issue an application bug would have to be present that resulted in a call to SSL_read()/SSL_write() being issued after having already received a fatal error. OpenSSL version 1.0.2b-1.0.2m are affected. Fixed in OpenSSL 1.0.2n. OpenSSL 1.1.0 is not affected.
総合評価: CVE-2017-3737 は中リスク（52.7/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 42.93%、97 パーセンタイル） 根拠: EPSS 上、短期間での悪用可能性は高い水準です。 推奨対応: 悪用可能性が高いため、影響範囲の確認と修補の優先付けを推奨します。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置（高いほど相対的に深刻）を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ（新 − 旧） |
|---|---|---|---|---|
| 1 | 2026-03-28 | 57.95% | 42.93% | -15.02% |
| 2 | 2026-03-22 | 42.93% | 57.95% | +15.02% |
| 3 | 2026-03-04 | — | 42.93% | — |
EPSS の全履歴 （全 61 件）
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 5.9 | 3.0 | MEDIUM |
|
2.2 | 3.6 | [email protected] |
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2017-3737 not yet assigned priority: Debian including 1 source packages (openssl), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2017-3737 |
gentoo
|
normal | CVE-2017-3737: 1 GLSA(s) (201712-03), 1 atom(s) (dev-libs/openssl); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2017-3737 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2017-3737 |
suse
|
medium | CVE-2017-3737 severity moderate: SUSE including 340 source package names (0.9.1:libopenssl1_0_0-1.0.2j-60.20.2, 0.9.1:openssl-1.0.2j-60.20.2, …), 572 product×package rows across 72 product lines (Container caasp/v4/default-http-backend, Container caasp/v4/dnsmasq-nanny, … (72 product lines)): Known Affected 231, Known Not Affected 184, Fixed 157. | https://www.suse.com/security/cve/CVE-2017-3737/ |
ubuntu
|
medium | CVE-2017-3737 medium priority: Ubuntu including 1 source packages (openssl), 5 status rows across 5 suites (artful, trusty, upstream, xenial, zesty): released 3, needs-triage 1, not-affected 1. | https://ubuntu.com/security/CVE-2017-3737 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| openssl | openssl | 1.0.2b | cpe:2.3:a:openssl:openssl:1.0.2b:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.2c | cpe:2.3:a:openssl:openssl:1.0.2c:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.2d | cpe:2.3:a:openssl:openssl:1.0.2d:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.2e | cpe:2.3:a:openssl:openssl:1.0.2e:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.2f | cpe:2.3:a:openssl:openssl:1.0.2f:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.2g | cpe:2.3:a:openssl:openssl:1.0.2g:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.2h | cpe:2.3:a:openssl:openssl:1.0.2h:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.2i | cpe:2.3:a:openssl:openssl:1.0.2i:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.2j | cpe:2.3:a:openssl:openssl:1.0.2j:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.2k | cpe:2.3:a:openssl:openssl:1.0.2k:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.2l | cpe:2.3:a:openssl:openssl:1.0.2l:*:*:*:*:*:*:* |
| openssl | openssl | 1.0.2m | cpe:2.3:a:openssl:openssl:1.0.2m:*:*:*:*:*:*:* |
| debian | debian_linux | 9.0 | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |