Crypto++ (aka cryptopp and libcrypto++) 5.6.4 contained a bug in its ASN.1 BER decoding routine. The library will allocate a memory block based on the length field of the ASN.1 object. If there is not enough content octets in the ASN.1 object, then the function will fail and the memory block will be zeroed even if its unused. There is a noticeable delay during the wipe for a large allocation.
総合評価: CVE-2016-9939 は中リスク(59.7/100)。CVSS 深刻度は高。悪用される可能性が高い(EPSS 4.20%、90 パーセンタイル) 推奨対応: 影響資産を整理し、修補計画に組み込んでください。
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 | 2026-06-15 | 5.92% | 4.20% | -1.72% |
| 2 | 2025-03-30 | 26.45% | 5.92% | -20.54% |
| 3 | 2025-03-29 | — | 26.45% | — |
EPSS の全履歴 (全 7 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 |
|---|---|---|---|---|---|---|
| 7.5 | 3.0 | HIGH |
|
3.9 | 3.6 | [email protected] |
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2016-9939 not yet assigned priority: Debian including 1 source packages (libcrypto++), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2016-9939 |
ubuntu
|
low | CVE-2016-9939 low priority: Ubuntu including 1 source packages (libcrypto++), 8 status rows across 8 suites (artful, bionic, precise, trusty, upstream, xenial, yakkety, zesty): not-affected 3, released 3, ignored 2. | https://ubuntu.com/security/CVE-2016-9939 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| cryptopp | crypto\+\+ | 5.6.4 | cpe:2.3:a:cryptopp:crypto\+\+:5.6.4:*:*:*:*:*:*:* |
| debian | debian_linux | 8.0 | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| http://www.debian.org/security/2016/dsa-3748 | Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2016/12/12/7 | Mailing List Patch Third Party Advisory |
| http://www.securityfocus.com/bid/94854 | Third Party Advisory VDB Entry |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7IL5A6465IEPW5GAWGXB2ENJPFYVWTJM/ |