set_file_metadata in xattr.c in GNU Wget before 1.20.1 stores a file's origin URL in the user.xdg.origin.url metadata attribute of the extended attributes of the downloaded file, which allows local users to obtain sensitive information (e.g., credentials contained in the URL) by reading this attribute, as demonstrated by getfattr. This also applies to Referer information in the user.xdg.referrer.url metadata attribute. According to 2016-07-22 in the Wget ChangeLog, user.xdg.origin.url was partially based on the behavior of fwrite_xattr in tool_xattr.c in curl.
総合評価: CVE-2018-20483 は悪用リスクが高い（63.1/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 0.66%、46 パーセンタイル） 根拠: 公開エクスプロイトが 1 件参照されています（Exploit-DB）。 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 ↗ |
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 | 0.04% | 0.66% | +0.62% |
| 2 | 2026-04-13 | 0.06% | 0.04% | -0.01% |
| 3 | 2025-08-30 | — | 0.06% | — |
EPSS の全履歴 （全 10 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 |
|---|---|---|---|---|---|---|
| 7.8 | 3.0 | HIGH |
|
1.8 | 5.9 | [email protected] |
| 2.1 | 2.0 | LOW |
|
3.9 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
high | CVE-2018-20483: 1 source package rows (wget); 25 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 15. | https://security.alpinelinux.org/vuln/CVE-2018-20483 |
debian
|
not yet assigned | CVE-2018-20483 not yet assigned priority: Debian including 1 source packages (wget), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2018-20483 |
gentoo
|
normal | CVE-2018-20483: 1 GLSA(s) (201903-08), 1 atom(s) (net-misc/wget); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2018-20483 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2018-20483 |
suse
|
medium | CVE-2018-20483 severity moderate: SUSE including 252 source package names (amazon/suse-sles-15-sp1-chost-byos-v20210304-hvm-ssd-x86_64, amazon/suse-sles-15-sp1-chost-byos-v20220127-hvm-ssd-x86_64, …), 458 product×package rows across 220 product lines (HPE Helion OpenStack 8, Image SLES15-SP3-BYOS-Azure, … (220 product lines)): Fixed 267, Known Affected 157, Known Not Affected 34. | https://www.suse.com/security/cve/CVE-2018-20483/ |
ubuntu
|
low | CVE-2018-20483 low priority: Ubuntu including 1 source packages (wget), 5 status rows across 5 suites (bionic, cosmic, trusty, upstream, xenial): released 3, not-affected 2. | https://ubuntu.com/security/CVE-2018-20483 |
| URL | タグ |
|---|---|
| http://git.savannah.gnu.org/cgit/wget.git/tree/NEWS | Release Notes Third Party Advisory |
| http://www.securityfocus.com/bid/106358 | Third Party Advisory VDB Entry |
| https://access.redhat.com/errata/RHSA-2019:3701 | |
| https://security.gentoo.org/glsa/201903-08 | Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20190321-0002/ | |
| https://twitter.com/marcan42/status/1077676739877232640 | Exploit Third Party Advisory |
| https://usn.ubuntu.com/3943-1/ |