CVE-2023-48795

Name
CVE-2023-48795
Description
The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remote attackers to bypass integrity checks such that some packets are omitted (from the extension negotiation message), and a client and server may consequently end up with a connection for which some security features have been downgraded or disabled, aka a Terrapin attack. This occurs because the SSH Binary Packet Protocol (BPP), implemented by these extensions, mishandles the handshake phase and mishandles use of sequence numbers. For example, there is an effective attack against SSH's use of ChaCha20-Poly1305 (and CBC with Encrypt-then-MAC). The bypass occurs in chacha20-poly1305@openssh.com and (if CBC is used) the -etm@openssh.com MAC algorithms. This also affects Maverick Synergy Java SSH API before 3.1.0-SNAPSHOT, Dropbear through 2022.83, Ssh before 5.1.1 in Erlang/OTP, PuTTY before 0.80, AsyncSSH before 2.14.2, golang.org/x/crypto before 0.17.0, libssh before 0.10.6, libssh2 through 1.11.0, Thorn Tech SFTP Gateway before 3.4.6, Tera Term before 5.1, Paramiko before 3.4.0, jsch before 0.2.15, SFTPGo before 2.5.6, Netgate pfSense Plus through 23.09.1, Netgate pfSense CE through 2.7.2, HPN-SSH through 18.2.0, ProFTPD before 1.3.8b (and before 1.3.9rc2), ORYX CycloneSSH before 2.3.4, NetSarang XShell 7 before Build 0144, CrushFTP before 10.6.0, ConnectBot SSH library before 2.2.22, Apache MINA sshd through 2.11.0, sshj through 0.37.0, TinySSH through 20230101, trilead-ssh2 6401, LANCOM LCOS and LANconfig, FileZilla before 3.66.4, Nova before 11.8, PKIX-SSH before 14.4, SecureCRT before 9.4.3, Transmit5 before 5.10.4, Win32-OpenSSH before 9.5.0.0p1-Beta, WinSCP before 6.2.2, Bitvise SSH Server before 9.32, Bitvise SSH Client before 9.33, KiTTY through 0.76.1.13, the net-ssh gem 7.2.0 for Ruby, the mscdex ssh2 module before 1.15.0 for Node.js, the thrussh library before 0.35.1 for Rust, and the Russh crate before 0.40.2 for Rust.
NVD Severity
unknown
Other trackers
Mailing lists
Exploits
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
cve@mitre.org https://github.com/erlang/otp/blob/d1b43dc0f1361d2ad67601169e90a7fc50bb0369/lib/ssh/doc/src/notes.xml#L39-L42
cve@mitre.org https://github.com/mkj/dropbear/blob/17657c36cce6df7716d5ff151ec09a665382d5dd/CHANGES#L25
cve@mitre.org https://github.com/openssh/openssh-portable/commits/master
cve@mitre.org https://github.com/ronf/asyncssh/tags
cve@mitre.org https://gitlab.com/libssh/libssh-mirror/-/tags
cve@mitre.org https://groups.google.com/g/golang-announce/c/-n5WqVC18LQ
cve@mitre.org https://jadaptive.com/important-java-ssh-security-update-new-ssh-vulnerability-discovered-cve-2023-48795/
cve@mitre.org https://matt.ucc.asn.au/dropbear/CHANGES
cve@mitre.org https://www.bitvise.com/ssh-server-version-history
cve@mitre.org https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html
cve@mitre.org https://www.openssh.com/openbsd.html
cve@mitre.org https://www.openssh.com/txt/release-9.6
cve@mitre.org https://www.reddit.com/r/sysadmin/comments/18idv52/cve202348795_why_is_this_cve_still_undisclosed/
cve@mitre.org https://www.terrapin-attack.com
cve@mitre.org https://github.com/TeraTermProject/teraterm/commit/7279fbd6ef4d0c8bdd6a90af4ada2899d786eec0
cve@mitre.org https://github.com/golang/crypto/commit/9d2ee975ef9fe627bf0a6f01c1f69e8ef1d4f05d
cve@mitre.org https://github.com/ronf/asyncssh/blob/develop/docs/changes.rst
cve@mitre.org https://github.com/warp-tech/russh/releases/tag/v0.40.2
cve@mitre.org https://thorntech.com/cve-2023-48795-and-sftp-gateway/
cve@mitre.org https://twitter.com/TrueSkrillor/status/1736774389725565005
cve@mitre.org https://www.openwall.com/lists/oss-security/2023/12/18/2
cve@mitre.org http://www.openwall.com/lists/oss-security/2023/12/18/3
cve@mitre.org https://github.com/paramiko/paramiko/issues/2337
cve@mitre.org https://groups.google.com/g/golang-announce/c/qA3XtxvMUyg
cve@mitre.org https://news.ycombinator.com/item?id=38684904
cve@mitre.org https://news.ycombinator.com/item?id=38685286
cve@mitre.org https://git.libssh.org/projects/libssh.git/commit/?h=stable-0.10&id=10e09e273f69e149389b3e0e5d44b8c221c2e7f6
cve@mitre.org https://github.com/mwiede/jsch/issues/457
cve@mitre.org https://access.redhat.com/security/cve/cve-2023-48795
cve@mitre.org https://bugs.gentoo.org/920280
cve@mitre.org https://bugzilla.redhat.com/show_bug.cgi?id=2254210
cve@mitre.org https://bugzilla.suse.com/show_bug.cgi?id=1217950
cve@mitre.org https://github.com/advisories/GHSA-45x7-px36-x8w8
cve@mitre.org https://github.com/drakkan/sftpgo/releases/tag/v2.5.6
cve@mitre.org https://github.com/erlang/otp/releases/tag/OTP-26.2.1
cve@mitre.org https://github.com/mwiede/jsch/pull/461
cve@mitre.org https://security-tracker.debian.org/tracker/CVE-2023-48795
cve@mitre.org https://security-tracker.debian.org/tracker/source-package/libssh2
cve@mitre.org https://security-tracker.debian.org/tracker/source-package/proftpd-dfsg
cve@mitre.org https://ubuntu.com/security/CVE-2023-48795
cve@mitre.org https://www.suse.com/c/suse-addresses-the-ssh-v2-protocol-terrapin-attack-aka-cve-2023-48795/
cve@mitre.org https://github.com/libssh2/libssh2/pull/1291
cve@mitre.org https://forum.netgate.com/topic/184941/terrapin-ssh-attack
cve@mitre.org https://github.com/jtesta/ssh-audit/commit/8e972c5e94b460379fe0c7d20209c16df81538a5
cve@mitre.org https://github.com/rapier1/hpn-ssh/releases
cve@mitre.org https://crates.io/crates/thrussh/versions
cve@mitre.org https://github.com/NixOS/nixpkgs/pull/275249
cve@mitre.org https://github.com/TeraTermProject/teraterm/releases/tag/v5.1
cve@mitre.org https://github.com/connectbot/sshlib/commit/5c8b534f6e97db7ac0e0e579331213aa25c173ab
cve@mitre.org https://github.com/connectbot/sshlib/compare/2.2.21...2.2.22
cve@mitre.org https://github.com/mscdex/ssh2/commit/97b223f8891b96d6fc054df5ab1d5a1a545da2a3
cve@mitre.org https://github.com/mwiede/jsch/compare/jsch-0.2.14...jsch-0.2.15
cve@mitre.org https://github.com/proftpd/proftpd/blob/master/RELEASE_NOTES
cve@mitre.org https://github.com/proftpd/proftpd/issues/456
cve@mitre.org https://nest.pijul.com/pijul/thrussh/changes/D6H7OWTTMHHX6BTB3B6MNBOBX2L66CBL4LGSEUSAI2MCRCJDQFRQC
cve@mitre.org https://oryx-embedded.com/download/#changelog
cve@mitre.org https://www.crushftp.com/crush10wiki/Wiki.jsp?page=Update
cve@mitre.org https://www.netsarang.com/en/xshell-update-history/
cve@mitre.org https://www.paramiko.org/changelog.html
cve@mitre.org http://www.openwall.com/lists/oss-security/2023/12/19/5
cve@mitre.org https://www.freebsd.org/security/advisories/FreeBSD-SA-23:19.openssh.asc
cve@mitre.org https://arstechnica.com/security/2023/12/hackers-can-break-ssh-channel-integrity-using-novel-data-corruption-attack/
cve@mitre.org http://www.openwall.com/lists/oss-security/2023/12/20/3
cve@mitre.org https://github.com/apache/mina-sshd/issues/445
cve@mitre.org https://github.com/hierynomus/sshj/issues/916
cve@mitre.org https://github.com/janmojzis/tinyssh/issues/81
cve@mitre.org https://github.com/proftpd/proftpd/blob/0a7ea9b0ba9fcdf368374a226370d08f10397d99/RELEASE_NOTES
cve@mitre.org https://github.com/proftpd/proftpd/blob/d21e7a2e47e9b38f709bec58e3fa711f759ad0e1/RELEASE_NOTES
cve@mitre.org https://github.com/net-ssh/net-ssh/blob/2e65064a52d73396bfc3806c9196fc8108f33cd8/CHANGES.txt#L14-L16
cve@mitre.org https://security-tracker.debian.org/tracker/source-package/trilead-ssh2
cve@mitre.org https://www.openwall.com/lists/oss-security/2023/12/20/3
cve@mitre.org http://packetstormsecurity.com/files/176280/Terrapin-SSH-Connection-Weakening.html
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MKQRBF3DWMWPH36LBCOBUTSIZRTPEZXB/
cve@mitre.org https://www.debian.org/security/2023/dsa-5586
cve@mitre.org https://filezilla-project.org/versions.php
cve@mitre.org https://github.com/PowerShell/Win32-OpenSSH/issues/2189
cve@mitre.org https://github.com/PowerShell/Win32-OpenSSH/releases/tag/v9.5.0.0p1-Beta
cve@mitre.org https://github.com/cyd01/KiTTY/issues/520
cve@mitre.org https://help.panic.com/releasenotes/transmit5/
cve@mitre.org https://nova.app/releases/#v11.8
cve@mitre.org https://roumenpetrov.info/secsh/#news20231220
cve@mitre.org https://winscp.net/eng/docs/history#6.2.2
cve@mitre.org https://www.bitvise.com/ssh-client-version-history#933
cve@mitre.org https://www.lancom-systems.de/service-support/allgemeine-sicherheitshinweise#c243508
cve@mitre.org https://www.theregister.com/2023/12/20/terrapin_attack_ssh
cve@mitre.org https://www.vandyke.com/products/securecrt/history.txt
cve@mitre.org https://www.debian.org/security/2023/dsa-5588
cve@mitre.org https://github.com/ssh-mitm/ssh-mitm/issues/165
cve@mitre.org https://news.ycombinator.com/item?id=38732005
cve@mitre.org https://lists.debian.org/debian-lts-announce/2023/12/msg00017.html
cve@mitre.org https://security.gentoo.org/glsa/202312-16
cve@mitre.org https://security.gentoo.org/glsa/202312-17
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3YQLUQWLIHDB5QCXQEX7HXHAWMOKPP5O/
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F7EYCFQCTSGJXWO3ZZ44MGKFC5HA7G3Y/
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APYIXIQOVDCRWLHTGB4VYMAUIAQLKYJ3/
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KMZCVGUGJZZVDPCVDA7TEB22VUCNEXDD/
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QI3EHAHABFQK7OABNCSF5GMYP6TONTI7/
cve@mitre.org https://security.netapp.com/advisory/ntap-20240105-0004/
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3CAYYW35MUTNO65RVAELICTNZZFMT2XS/
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LZQVUHWVWRH73YBXUQJOD6CKHDQBU3DM/
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/C3AFMZ6MH2UHHOPIWT5YLSFV3D2VB3AC/
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/33XHJUB6ROFUOH2OQNENFROTVH6MHSHA/
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BL5KTLOSLH2KHRN4HCXJPK3JUVLDGEL6/
cve@mitre.org https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2024-0002
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CHHITS4PUOZAKFIUBQAQZC7JWXMOYE4B/
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HYEDEXIKFKTUJIN43RG4B7T5ZS6MHUSP/
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I724O3LSRCPO4WNVIXTZCT4VVRMXMMSG/
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KEOTKBUPZXHE3F352JBYNTSNRXYLWD6P/
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6Y74KVCPEPT4MVU3LHDWCNNOXOE5ZLUR/
cve@mitre.org https://lists.debian.org/debian-lts-announce/2024/01/msg00013.html
cve@mitre.org https://lists.debian.org/debian-lts-announce/2024/01/msg00014.html
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L5Y6MNNVAPIJSXJERQ6PKZVCIUXSNJK7/
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3JIMLVBDWOP4FUPXPTB4PGHHIOMGFLQE/
cve@mitre.org https://support.apple.com/kb/HT214084
cve@mitre.org http://seclists.org/fulldisclosure/2024/Mar/21
cve@mitre.org https://lists.debian.org/debian-lts-announce/2024/04/msg00016.html
cve@mitre.org http://www.openwall.com/lists/oss-security/2024/04/17/8
cve@mitre.org http://www.openwall.com/lists/oss-security/2024/03/06/3

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:* openssh >= None < 9.6

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
libssh edge-community 0.10.6-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
openssh 3.19-main 9.6_p1-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
libssh 3.19-community 0.10.6-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
py3-paramiko 3.19-community 3.4.0-r0 Fabian Affolter <fabian@affolter-engineering.ch> fixed
erlang 3.19-community 26.2.1-r0 Daniel Isaksen <d@duniel.no> fixed
dropbear 3.19-main 2022.83-r4 Natanael Copa <ncopa@alpinelinux.org> fixed
dropbear 3.18-main 2022.83-r2 Natanael Copa <ncopa@alpinelinux.org> fixed
dropbear 3.17-main 2022.83-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
dropbear 3.16-main 2022.82-r2 Natanael Copa <ncopa@alpinelinux.org> fixed
libssh2 3.19-main 1.11.0-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
py3-asyncssh 3.19-community 2.14.2-r0 Duncan Bellamy <dunk@denkimushi.com> fixed
tinyssh 3.19-community 20230101-r3 Stuart Cardall <developer@it-offshore.co.uk> fixed
filezilla 3.19-community 3.66.4-r0 Leonardo Arena <rnalrd@alpinelinux.org> fixed
pijul edge-community 1.0.0_beta8-r1 Celeste <cielesti@protonmail.com> fixed
pijul 3.19-community 1.0.0_beta8-r0 Celeste <cielesti@protonmail.com> fixed
libssh2 3.18-main 1.11.0-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
libssh2 3.17-main 1.11.0-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
libssh2 3.16-main 1.11.0-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
openssh 3.18-main 9.3_p2-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
openssh 3.17-main 9.1_p1-r5 Natanael Copa <ncopa@alpinelinux.org> fixed
openssh 3.16-main 9.0_p1-r5 Natanael Copa <ncopa@alpinelinux.org> fixed