libcurl versions from 7.34.0 to before 7.64.0 are vulnerable to a heap out-of-bounds read in the code handling the end-of-response for SMTP. If the buffer passed to `smtp_endofresp()` isn't NUL terminated and contains no character ending the parsed number, and `len` is set to 5, then the `strtol()` call reads beyond the allocated buffer. The read contents will not be returned to the caller.
総合評価: CVE-2019-3823 は悪用リスクが高い(66.3/100)。CVSS 深刻度は中。悪用される可能性が高い(EPSS 4.29%、90 パーセンタイル) 根拠: 公開エクスプロイトが 2 件参照されています(Exploit-DB)。 直近 1 日で EPSS が +2.72% 上昇。悪用への関心が高まっている可能性があります。 推奨対応: 公開エクスプロイトが確認されています。影響範囲の確認、緩和策の適用、パッチ適用を優先してください。
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。
| EDB-ID | ソース | 種別 | 公開 | リンク |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
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 | 1.57% | 4.29% | +2.72% |
| 2 | 2026-05-29 | 1.91% | 1.57% | -0.34% |
| 3 | 2026-05-03 | — | 1.91% | — |
EPSS の全履歴 (全 28 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 |
|---|---|---|---|---|---|---|
| 4.3 | 3.0 | MEDIUM |
|
2.8 | 1.4 | [email protected] |
| 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 |
|---|---|---|---|
alpine
|
high | CVE-2019-3823: 1 source package rows (curl); 10 state rows across 10 repos (3.10-main, 3.11-main, 3.12-main, 3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 10, open 0. | https://security.alpinelinux.org/vuln/CVE-2019-3823 |
debian
|
not yet assigned | CVE-2019-3823 not yet assigned priority: Debian including 1 source packages (curl), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2019-3823 |
gentoo
|
normal | CVE-2019-3823: 1 GLSA(s) (201903-03), 1 atom(s) (net-misc/curl); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2019-3823 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2019-3823 |
suse
|
medium | CVE-2019-3823 severity moderate: SUSE including 364 source package names (0.1.0:libcurl4-7.60.0-3.17.1, 0.1.75:libcurl4-7.60.0-3.17.1, …), 464 product×package rows across 107 product lines (Container caasp/v4/389-ds, Container caasp/v4/busybox, … (107 product lines)): Fixed 267, Known Affected 157, Known Not Affected 40. | https://www.suse.com/security/cve/CVE-2019-3823/ |
ubuntu
|
low | CVE-2019-3823 low priority: Ubuntu including 1 source packages (curl), 10 status rows across 10 suites (bionic, cosmic, disco, eoan, focal, groovy, hirsute, trusty, upstream, xenial): released 10. | https://ubuntu.com/security/CVE-2019-3823 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| haxx | libcurl | >= 7.34.0, < 7.64.0 | cpe:2.3:a:haxx:libcurl:*:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 14.04 | cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 16.04 | cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 18.04 | cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 18.10 | cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* |
| debian | debian_linux | 9.0 | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
| netapp | clustered_data_ontap | — | cpe:2.3:o:netapp:clustered_data_ontap:*:*:*:*:*:*:*:* |
| oracle | communications_operations_monitor | 3.4 | cpe:2.3:a:oracle:communications_operations_monitor:3.4:*:*:*:*:*:*:* |
| oracle | communications_operations_monitor | 4.0 | cpe:2.3:a:oracle:communications_operations_monitor:4.0:*:*:*:*:*:*:* |
| oracle | http_server | 12.2.1.3.0 | cpe:2.3:a:oracle:http_server:12.2.1.3.0:*:*:*:*:*:*:* |
| oracle | secure_global_desktop | 5.4 | cpe:2.3:a:oracle:secure_global_desktop:5.4:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| http://www.securityfocus.com/bid/106950 | Third Party Advisory VDB Entry |
| https://access.redhat.com/errata/RHSA-2019:3701 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3823 | Exploit Issue Tracking Patch Third Party Advisory |
| https://cert-portal.siemens.com/productcert/pdf/ssa-936080.pdf | |
| https://curl.haxx.se/docs/CVE-2019-3823.html | Patch Vendor Advisory |
| https://lists.apache.org/thread.html/8338a0f605bdbb3a6098bb76f666a95fc2b2f53f37fa1ecc89f1146f%40%3Cdevnull.infra.apache.org%3E | |
| https://security.gentoo.org/glsa/201903-03 | Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20190315-0001/ | Exploit Third Party Advisory |
| https://usn.ubuntu.com/3882-1/ | Third Party Advisory |
| https://www.debian.org/security/2019/dsa-4386 | Third Party Advisory |
| https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html | Patch Third Party Advisory |
| https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html |