CVE-2023-48795 (https://terrapin-attack.com/): 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 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, and PuTTY before 0.80; and there could be effects on Bitvise SSH through 9.31, AsyncSSH through 2.14.1, libssh through 0.10.5, and golang.org/x/crypto through 2023-12-17.
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=18f1b347bcee162d7fc7a405aa355ad1ba965b51 commit 18f1b347bcee162d7fc7a405aa355ad1ba965b51 Author: Christopher Fore <csfore@posteo.net> AuthorDate: 2023-12-19 00:17:54 +0000 Commit: Sam James <sam@gentoo.org> CommitDate: 2023-12-19 05:31:05 +0000 net-libs/libssh: add 0.10.6 This addresses the Terrapin vulnerability Bug: https://bugs.gentoo.org/920291 Signed-off-by: Christopher Fore <csfore@posteo.net> Closes: https://github.com/gentoo/gentoo/pull/34359 Signed-off-by: Sam James <sam@gentoo.org> net-libs/libssh/Manifest | 1 + net-libs/libssh/libssh-0.10.6.ebuild | 135 +++++++++++++++++++++++++++++++++++ 2 files changed, 136 insertions(+)
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/data/glsa.git/commit/?id=b5fd84fed4c7e7ddb236f13fb5044cc546ce7c6c commit b5fd84fed4c7e7ddb236f13fb5044cc546ce7c6c Author: GLSAMaker <glsamaker@gentoo.org> AuthorDate: 2023-12-28 02:21:11 +0000 Commit: Sam James <sam@gentoo.org> CommitDate: 2023-12-28 02:22:08 +0000 [ GLSA 202312-16 ] libssh: Multiple Vulnerabilities Bug: https://bugs.gentoo.org/920291 Bug: https://bugs.gentoo.org/920724 Signed-off-by: GLSAMaker <glsamaker@gentoo.org> Signed-off-by: Sam James <sam@gentoo.org> glsa-202312-16.xml | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+)
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=e1565810cb6fde75c0271f52eaf08f28d1548b66 commit e1565810cb6fde75c0271f52eaf08f28d1548b66 Author: Andreas Sturmlechner <asturm@gentoo.org> AuthorDate: 2024-01-03 22:28:41 +0000 Commit: Andreas Sturmlechner <asturm@gentoo.org> CommitDate: 2024-01-03 23:00:47 +0000 net-libs/libssh: Cleanup vulnerable 0.10.5 Bug: https://bugs.gentoo.org/920291 Bug: https://bugs.gentoo.org/920724 Signed-off-by: Andreas Sturmlechner <asturm@gentoo.org> net-libs/libssh/Manifest | 1 - net-libs/libssh/libssh-0.10.5.ebuild | 135 ----------------------------------- 2 files changed, 136 deletions(-)
Cleanup done, kde proj out.
