← 戻る
CVE-2023-48795
medium
CVSS 5.9
russh の脆弱性 (CVE-2023-48795)
概要
russh に 脆弱性 (CVE-2023-48795) が存在。データの不正な改ざんを許す可能性があります。対策: `0.40.2` 以上に更新。
AI要約 snake-internal / snake-material-v2
russh という製品で、CVE-2023-48795 という番号がついた弱点 (脆弱性) が見つかりました。
データの不正な改ざんを許す可能性があります。重要度は CVSS スコア 5.9/10 です。
対策: russh を **0.40.2** 以上に更新してください。
心配なら、システム担当者や製品の公式サイトで「russh CVE-2023-48795」を検索してください。
CVE-2023-48795 (russh) — CWE-345 / CVSS v3 5.9
攻撃ベクター: ネットワーク経由 (リモート攻撃可) / 認証不要 / 被害者操作不要
修正バージョン: `0.40.2` (即時適用推奨)
対応方針: 1) SBOMで影響バージョン横断確認, 2) ステージング検証→本番更新, 3) WAF/プロキシで該当エンドポイントを監視, 4) ログでIOC調査。
参考: 当ページの『参照URL』の GHSA / vendor advisory / patched release を参照。
❓ 何が問題か
russh に **脆弱性** (CWE-345) があります。
📍 影響範囲
russh のうち 。
🔥 重要度
重要度: 中 (CVSS 5.9/10)。データの不正な改ざんを許す可能性があります
🔧 修正方法
**0.40.2** に更新してください。
🛡️ 暫定回避
修正版が未提供時は、影響機能の無効化・WAFルール・ネットワークACLでの遮断を検討。
🔍 検知方法
Webサーバ・プロキシ・WAFログで該当CVEのIOCに合致する不審リクエストを検索。SBOM/依存ファイルで影響バージョンを横断確認。
対応アクション (7段階)
SOC/SREチームが順番に実行すべき具体的なステップとコマンド例
-
1影響範囲の特定 identify
grep -r 'russh' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で `russh` を grep し、稼働しているサービス・バージョンを把握する。
-
6パッチ適用 patch
Upgrade russh to 0.40.2ステージング環境で 0.40.2 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスと、Step 3 で見つけた異常検知の続報チェックを含めること。
-
7事後検証 verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番では Step 3 と同じログクエリでアラート再発が無いか継続監視。
影響パッケージ
rust
russh
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.40.2"}]}]
pip
paramiko
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.0"}]}]
go
golang.org/x/crypto
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.0.0-20231218163308-9d2ee975ef9f"}]}]
参照URL
- advisory af854a3a-2127-422b-91ae-364da2661108
- advisory af854a3a-2127-422b-91ae-364da2661108
- advisory af854a3a-2127-422b-91ae-364da2661108
- advisory af854a3a-2127-422b-91ae-364da2661108
- advisory af854a3a-2127-422b-91ae-364da2661108
- advisory af854a3a-2127-422b-91ae-364da2661108
- advisory af854a3a-2127-422b-91ae-364da2661108
- advisory af854a3a-2127-422b-91ae-364da2661108
- advisory af854a3a-2127-422b-91ae-364da2661108
- advisory af854a3a-2127-422b-91ae-364da2661108
- advisory af854a3a-2127-422b-91ae-364da2661108
- advisory af854a3a-2127-422b-91ae-364da2661108
- advisory af854a3a-2127-422b-91ae-364da2661108
- advisory af854a3a-2127-422b-91ae-364da2661108
- advisory af854a3a-2127-422b-91ae-364da2661108
- advisory af854a3a-2127-422b-91ae-364da2661108
- advisory af854a3a-2127-422b-91ae-364da2661108
- advisory af854a3a-2127-422b-91ae-364da2661108
- advisory af854a3a-2127-422b-91ae-364da2661108
- issue af854a3a-2127-422b-91ae-364da2661108
- patch af854a3a-2127-422b-91ae-364da2661108
- web http://packetstormsecurity.com/files/176280/Terrapin-SSH-Connection-Weakening.html
- web http://seclists.org/fulldisclosure/2024/Mar/21
- web http://www.openwall.com/lists/oss-security/2023/12/18/3
- web http://www.openwall.com/lists/oss-security/2023/12/19/5
- web http://www.openwall.com/lists/oss-security/2023/12/20/3
- web http://www.openwall.com/lists/oss-security/2024/03/06/3
- web http://www.openwall.com/lists/oss-security/2024/04/17/8
- web https://access.redhat.com/security/cve/cve-2023-48795
- web af854a3a-2127-422b-91ae-364da2661108
- web https://bugs.gentoo.org/920280
- web https://bugzilla.redhat.com/show_bug.cgi?id=2254210
- web https://bugzilla.suse.com/show_bug.cgi?id=1217950
- web https://crates.io/crates/thrussh/versions
- web https://filezilla-project.org/versions.php
- web https://forum.netgate.com/topic/184941/terrapin-ssh-attack
- web https://git.libssh.org/projects/libssh.git/commit/?h=stable-0.10&id=10e09e273f69e149389b3e0e5d44b8c221c2e7f6
- web https://github.com/NixOS/nixpkgs/pull/275249
- web https://github.com/PowerShell/Win32-OpenSSH/issues/2189
- web https://github.com/PowerShell/Win32-OpenSSH/releases/tag/v9.5.0.0p1-Beta
- web https://github.com/TeraTermProject/teraterm/commit/7279fbd6ef4d0c8bdd6a90af4ada2899d786eec0
- web https://github.com/TeraTermProject/teraterm/releases/tag/v5.1
- web https://github.com/advisories/GHSA-45x7-px36-x8w8
- web https://github.com/apache/mina-sshd/issues/445
- web https://github.com/connectbot/sshlib/commit/5c8b534f6e97db7ac0e0e579331213aa25c173ab
- web https://github.com/connectbot/sshlib/compare/2.2.21...2.2.22
- web https://github.com/cyd01/KiTTY/issues/520
- web https://github.com/drakkan/sftpgo/releases/tag/v2.5.6
- web https://github.com/erlang/otp/blob/d1b43dc0f1361d2ad67601169e90a7fc50bb0369/lib/ssh/doc/src/notes.xml#L39-L42
- web https://github.com/erlang/otp/releases/tag/OTP-26.2.1
- web https://github.com/golang/crypto/commit/9d2ee975ef9fe627bf0a6f01c1f69e8ef1d4f05d
- web https://github.com/hierynomus/sshj/issues/916
- web https://github.com/janmojzis/tinyssh/issues/81
- web https://github.com/jtesta/ssh-audit/commit/8e972c5e94b460379fe0c7d20209c16df81538a5
- web https://github.com/libssh2/libssh2/pull/1291
- web https://github.com/mkj/dropbear/blob/17657c36cce6df7716d5ff151ec09a665382d5dd/CHANGES#L25
- web https://github.com/mscdex/ssh2/commit/97b223f8891b96d6fc054df5ab1d5a1a545da2a3
- web https://github.com/mwiede/jsch/compare/jsch-0.2.14...jsch-0.2.15
- web https://github.com/mwiede/jsch/issues/457
- web https://github.com/mwiede/jsch/pull/461
- web https://github.com/net-ssh/net-ssh/blob/2e65064a52d73396bfc3806c9196fc8108f33cd8/CHANGES.txt#L14-L16
- web https://github.com/openssh/openssh-portable/commits/master
- web https://github.com/paramiko/paramiko/issues/2337
- web https://github.com/proftpd/proftpd/blob/0a7ea9b0ba9fcdf368374a226370d08f10397d99/RELEASE_NOTES
- web https://github.com/proftpd/proftpd/blob/d21e7a2e47e9b38f709bec58e3fa711f759ad0e1/RELEASE_NOTES
- web https://github.com/proftpd/proftpd/blob/master/RELEASE_NOTES
- web https://github.com/proftpd/proftpd/issues/456
- web https://github.com/rapier1/hpn-ssh/releases
- web https://github.com/ronf/asyncssh/blob/develop/docs/changes.rst
- web https://github.com/ronf/asyncssh/tags
- web https://github.com/ssh-mitm/ssh-mitm/issues/165
- web https://github.com/warp-tech/russh/releases/tag/v0.40.2
- web https://gitlab.com/libssh/libssh-mirror/-/tags
- web https://groups.google.com/g/golang-announce/c/-n5WqVC18LQ
- web https://groups.google.com/g/golang-announce/c/qA3XtxvMUyg
- web af854a3a-2127-422b-91ae-364da2661108
- web af854a3a-2127-422b-91ae-364da2661108
- web https://lists.debian.org/debian-lts-announce/2023/12/msg00017.html
- web https://lists.debian.org/debian-lts-announce/2024/01/msg00013.html
- web https://lists.debian.org/debian-lts-announce/2024/01/msg00014.html
- web https://lists.debian.org/debian-lts-announce/2024/04/msg00016.html
- web https://matt.ucc.asn.au/dropbear/CHANGES
- web https://nest.pijul.com/pijul/thrussh/changes/D6H7OWTTMHHX6BTB3B6MNBOBX2L66CBL4LGSEUSAI2MCRCJDQFRQC
- web https://news.ycombinator.com/item?id=38684904
- web https://news.ycombinator.com/item?id=38685286
- web https://news.ycombinator.com/item?id=38732005
- web https://nova.app/releases/#v11.8
- web https://oryx-embedded.com/download/#changelog
- web https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2024-0002
- web https://roumenpetrov.info/secsh/#news20231220
- web https://security-tracker.debian.org/tracker/CVE-2023-48795
- web https://security-tracker.debian.org/tracker/source-package/libssh2
- web https://security-tracker.debian.org/tracker/source-package/proftpd-dfsg
- web https://security-tracker.debian.org/tracker/source-package/trilead-ssh2
- web https://security.gentoo.org/glsa/202312-16
- web https://security.gentoo.org/glsa/202312-17
- web https://support.apple.com/kb/HT214084
- web https://twitter.com/TrueSkrillor/status/1736774389725565005
- web https://ubuntu.com/security/CVE-2023-48795
- web https://winscp.net/eng/docs/history#6.2.2
- web https://www.bitvise.com/ssh-client-version-history#933
- web https://www.bitvise.com/ssh-server-version-history
- web https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html
- web https://www.crushftp.com/crush10wiki/Wiki.jsp?page=Update
- web https://www.debian.org/security/2023/dsa-5586
- web https://www.debian.org/security/2023/dsa-5588
- web https://www.freebsd.org/security/advisories/FreeBSD-SA-23:19.openssh.asc
- web https://www.lancom-systems.de/service-support/allgemeine-sicherheitshinweise#c243508
- web af854a3a-2127-422b-91ae-364da2661108
- web https://www.openssh.com/openbsd.html
- web https://www.openssh.com/txt/release-9.6
- web https://www.openwall.com/lists/oss-security/2023/12/18/2
- web https://www.openwall.com/lists/oss-security/2023/12/20/3
- web https://www.paramiko.org/changelog.html
- web af854a3a-2127-422b-91ae-364da2661108
- web https://www.terrapin-attack.com
- web https://www.theregister.com/2023/12/20/terrapin_attack_ssh
- web https://www.vandyke.com/products/securecrt/history.txt
- web https://lists.debian.org/debian-lts-announce/2024/09/msg00042.html
- web https://lists.debian.org/debian-lts-announce/2024/11/msg00032.html
- web https://lists.debian.org/debian-lts-announce/2025/04/msg00028.html
- web af854a3a-2127-422b-91ae-364da2661108
- web af854a3a-2127-422b-91ae-364da2661108
- web af854a3a-2127-422b-91ae-364da2661108
- web af854a3a-2127-422b-91ae-364da2661108
- web af854a3a-2127-422b-91ae-364da2661108
- web af854a3a-2127-422b-91ae-364da2661108
- web af854a3a-2127-422b-91ae-364da2661108
- web af854a3a-2127-422b-91ae-364da2661108
- web af854a3a-2127-422b-91ae-364da2661108
- web af854a3a-2127-422b-91ae-364da2661108
- web af854a3a-2127-422b-91ae-364da2661108
- web https://www.vicarius.io/vsociety/posts/cve-2023-48795-detect-openssh-vulnerabilit
- web https://www.vicarius.io/vsociety/posts/cve-2023-48795-mitigate-openssh-vulnerability
- web https://cert-portal.siemens.com/productcert/html/ssa-082556.html
- web https://cert-portal.siemens.com/productcert/html/ssa-364175.html
- web https://cert-portal.siemens.com/productcert/html/ssa-769027.html
- web https://cert-portal.siemens.com/productcert/html/ssa-794697.html
- web https://cert-portal.siemens.com/productcert/html/ssa-915275.html
- web https://github.com/warp-tech/russh/security/advisories/GHSA-45x7-px36-x8w8
- web https://nvd.nist.gov/vuln/detail/CVE-2023-48795
- web https://github.com/warp-tech/russh/commit/1aa340a7df1d5be1c0f4a9e247aade76dfdd2951
- web https://go.dev/cl/550715
- web https://go.dev/issue/64784
- web https://github.com/paramiko/paramiko/issues/2337#issuecomment-1887642773
- web https://arstechnica.com/security/2023/12/hackers-can-break-ssh-channel-integrity-using-novel-data-corruption-attack
- web https://help.panic.com/releasenotes/transmit5
- web https://jadaptive.com/important-java-ssh-security-update-new-ssh-vulnerability-discovered-cve-2023-48795
- web https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/33XHJUB6ROFUOH2OQNENFROTVH6MHSHA
- web https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3CAYYW35MUTNO65RVAELICTNZZFMT2XS
- web https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3JIMLVBDWOP4FUPXPTB4PGHHIOMGFLQE
- web https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3YQLUQWLIHDB5QCXQEX7HXHAWMOKPP5O
- web https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6Y74KVCPEPT4MVU3LHDWCNNOXOE5ZLUR
- web https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APYIXIQOVDCRWLHTGB4VYMAUIAQLKYJ3
- web https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BL5KTLOSLH2KHRN4HCXJPK3JUVLDGEL6
- web https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/C3AFMZ6MH2UHHOPIWT5YLSFV3D2VB3AC
- web https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CHHITS4PUOZAKFIUBQAQZC7JWXMOYE4B
- web https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F7EYCFQCTSGJXWO3ZZ44MGKFC5HA7G3Y
- web https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HYEDEXIKFKTUJIN43RG4B7T5ZS6MHUSP
- web https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I724O3LSRCPO4WNVIXTZCT4VVRMXMMSG
- web https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KEOTKBUPZXHE3F352JBYNTSNRXYLWD6P
- web https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KMZCVGUGJZZVDPCVDA7TEB22VUCNEXDD
- web https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L5Y6MNNVAPIJSXJERQ6PKZVCIUXSNJK7
- web https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LZQVUHWVWRH73YBXUQJOD6CKHDQBU3DM
- web https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MKQRBF3DWMWPH36LBCOBUTSIZRTPEZXB
- web https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QI3EHAHABFQK7OABNCSF5GMYP6TONTI7
- web https://security.netapp.com/advisory/ntap-20240105-0004
- web https://thorntech.com/cve-2023-48795-and-sftp-gateway
- web https://www.netsarang.com/en/xshell-update-history
- web https://www.reddit.com/r/sysadmin/comments/18idv52/cve202348795_why_is_this_cve_still_undisclosed
- web https://www.suse.com/c/suse-addresses-the-ssh-v2-protocol-terrapin-attack-aka-cve-2023-48795
- web https://lists.fedoraproject.org/archives/list/[email protected]/message/3JIMLVBDWOP4FUPXPTB4PGHHIOMGFLQE
- web https://lists.fedoraproject.org/archives/list/[email protected]/message/3YQLUQWLIHDB5QCXQEX7HXHAWMOKPP5O
- web https://lists.fedoraproject.org/archives/list/[email protected]/message/6Y74KVCPEPT4MVU3LHDWCNNOXOE5ZLUR
- web https://lists.fedoraproject.org/archives/list/[email protected]/message/APYIXIQOVDCRWLHTGB4VYMAUIAQLKYJ3
- web https://lists.fedoraproject.org/archives/list/[email protected]/message/C3AFMZ6MH2UHHOPIWT5YLSFV3D2VB3AC
- web https://lists.fedoraproject.org/archives/list/[email protected]/message/I724O3LSRCPO4WNVIXTZCT4VVRMXMMSG
- web https://lists.fedoraproject.org/archives/list/[email protected]/message/L5Y6MNNVAPIJSXJERQ6PKZVCIUXSNJK7
- web https://lists.fedoraproject.org/archives/list/[email protected]/message/LZQVUHWVWRH73YBXUQJOD6CKHDQBU3DM
- web https://lists.fedoraproject.org/archives/list/[email protected]/message/MKQRBF3DWMWPH36LBCOBUTSIZRTPEZXB
- web https://lists.fedoraproject.org/archives/list/[email protected]/message/33XHJUB6ROFUOH2OQNENFROTVH6MHSHA
- web https://lists.fedoraproject.org/archives/list/[email protected]/message/HYEDEXIKFKTUJIN43RG4B7T5ZS6MHUSP