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.
結論預警: CVE-2016-9939 綜合評估為中等風險(59.7/100):CVSS 技術影響為高級,利用機率(EPSS 4.20%) 強制指令: 梳理受影響資產並納入修補計畫。
風險隨態勢動態變化;本站持續評估並同步更新本頁展示內容。
EPSS 日更估計相對被利用可能性;百分位表示該 CVE 在已評分漏洞中的相對排名(越高表示相對更嚴重)。
| # | 日期 | 舊 EPSS 分數 | 新 EPSS 分數 | 變化(新 − 舊) |
|---|---|---|---|---|
| 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% | — |
完整 EPSS 歷史 (共 7 筆)
該 CVE 的 CVSS 指標。
| 底座分 | 版本 | 嚴重度 | 向量 | 可利用性 | 影響 | 分數來源 |
|---|---|---|---|---|---|---|
| 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 |
| 廠商 | 產品 | 版本 | 原始 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 | 標籤 |
|---|---|
| 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/ |