Search for packages
Package details: pkg:deb/debian/putty@0.67-3%2Bdeb9u1
purl pkg:deb/debian/putty@0.67-3%2Bdeb9u1
Next non-vulnerable version 0.74-1+deb11u2
Latest non-vulnerable version 0.74-1+deb11u2
Risk 4.4
Vulnerabilities affecting this package (10)
Vulnerability Summary Fixed by
VCID-6nau-dvpn-rud4
Aliases:
CVE-2024-31497
In PuTTY 0.68 through 0.80 before 0.81, biased ECDSA nonce generation allows an attacker to recover a user's NIST P-521 secret key via a quick attack in approximately 60 signatures. This is especially important in a scenario where an adversary is able to read messages signed by PuTTY or Pageant. The required set of signed messages may be publicly readable because they are stored in a public Git service that supports use of SSH for commit signing, and the signatures were made by Pageant through an agent-forwarding mechanism. In other words, an adversary may already have enough signature information to compromise a victim's private key, even if there is no further use of vulnerable PuTTY versions. After a key compromise, an adversary may be able to conduct supply-chain attacks on software maintained in Git. A second, independent scenario is that the adversary is an operator of an SSH server to which the victim authenticates (for remote login or file copy), even though this server is not fully trusted by the victim, and the victim uses the same private key for SSH connections to other services operated by other entities. Here, the rogue server operator (who would otherwise have no way to determine the victim's private key) can derive the victim's private key, and then use it for unauthorized access to those other services. If the other services include Git services, then again it may be possible to conduct supply-chain attacks on software maintained in Git. This also affects, for example, FileZilla before 3.67.0, WinSCP before 6.3.3, TortoiseGit before 2.15.0.1, and TortoiseSVN through 1.14.6.
0.74-1+deb11u2
Affected by 0 other vulnerabilities.
VCID-7zq7-qzfp-6yav
Aliases:
CVE-2019-9894
A remotely triggerable memory overwrite in RSA key exchange in PuTTY before 0.71 can occur before host key verification.
0.70-6
Affected by 6 other vulnerabilities.
VCID-8w48-kann-e3cm
Aliases:
CVE-2019-9898
Potential recycling of random numbers used in cryptography exists within PuTTY before 0.71.
0.70-6
Affected by 6 other vulnerabilities.
VCID-bdmn-qdzn-7udm
Aliases:
CVE-2019-17069
PuTTY before 0.73 might allow remote SSH-1 servers to cause a denial of service by accessing freed memory locations via an SSH1_MSG_DISCONNECT message.
0.74-1+deb11u2
Affected by 0 other vulnerabilities.
VCID-cazr-yctb-n3bu
Aliases:
CVE-2021-36367
PuTTY through 0.75 proceeds with establishing an SSH session even if it has never sent a substantive authentication response. This makes it easier for an attacker-controlled SSH server to present a later spoofed authentication prompt (that the attacker can use to capture credential data, and use that data for purposes that are undesired by the client user).
0.74-1+deb11u2
Affected by 0 other vulnerabilities.
VCID-gdfg-dkdy-sqfg
Aliases:
CVE-2019-9897
Multiple denial-of-service attacks that can be triggered by writing to the terminal exist in PuTTY versions before 0.71.
0.70-6
Affected by 6 other vulnerabilities.
VCID-nae7-sgpk-57fb
Aliases:
CVE-2019-17068
PuTTY before 0.73 mishandles the "bracketed paste mode" protection mechanism, which may allow a session to be affected by malicious clipboard content.
0.74-1+deb11u2
Affected by 0 other vulnerabilities.
VCID-rmk2-8vdv-ubdt
Aliases:
CVE-2023-48795
GHSA-45x7-px36-x8w8
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.
0.74-1+deb11u2
Affected by 0 other vulnerabilities.
VCID-u2je-rq1n-5be1
Aliases:
CVE-2020-14002
PuTTY 0.68 through 0.73 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts (where no host key for the server has been cached by the client).
0.74-1+deb11u2
Affected by 0 other vulnerabilities.
VCID-wc3k-a9nm-p7bu
Aliases:
CVE-2019-9895
In PuTTY versions before 0.71 on Unix, a remotely triggerable buffer overflow exists in any kind of server-to-client forwarding.
0.70-6
Affected by 6 other vulnerabilities.
Vulnerabilities fixed by this package (7)
Vulnerability Summary Aliases
VCID-3824-qdkt-eqas CVE-2017-6542
VCID-7zq7-qzfp-6yav A remotely triggerable memory overwrite in RSA key exchange in PuTTY before 0.71 can occur before host key verification. CVE-2019-9894
VCID-8w48-kann-e3cm Potential recycling of random numbers used in cryptography exists within PuTTY before 0.71. CVE-2019-9898
VCID-9gmp-54ku-mqhx CVE-2016-2563
VCID-gdfg-dkdy-sqfg Multiple denial-of-service attacks that can be triggered by writing to the terminal exist in PuTTY versions before 0.71. CVE-2019-9897
VCID-kn6f-zstc-2be7 security update CVE-2015-5309
VCID-wc3k-a9nm-p7bu In PuTTY versions before 0.71 on Unix, a remotely triggerable buffer overflow exists in any kind of server-to-client forwarding. CVE-2019-9895

Date Actor Action Vulnerability Source VulnerableCode Version
2025-08-01T19:51:58.419709+00:00 Debian Oval Importer Affected by VCID-nae7-sgpk-57fb https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 37.0.0
2025-08-01T17:54:45.069969+00:00 Debian Oval Importer Affected by VCID-7zq7-qzfp-6yav https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 37.0.0
2025-08-01T17:28:38.564253+00:00 Debian Oval Importer Fixing VCID-kn6f-zstc-2be7 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 37.0.0
2025-08-01T17:24:17.545996+00:00 Debian Oval Importer Affected by VCID-rmk2-8vdv-ubdt https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 37.0.0
2025-08-01T15:17:18.498303+00:00 Debian Oval Importer Affected by VCID-u2je-rq1n-5be1 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 37.0.0
2025-08-01T14:41:57.534145+00:00 Debian Oval Importer Affected by VCID-6nau-dvpn-rud4 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 37.0.0
2025-08-01T14:34:20.841203+00:00 Debian Oval Importer Affected by VCID-cazr-yctb-n3bu https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 37.0.0
2025-08-01T14:23:56.725550+00:00 Debian Oval Importer Affected by VCID-gdfg-dkdy-sqfg https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 37.0.0
2025-08-01T14:06:10.622957+00:00 Debian Oval Importer Affected by VCID-wc3k-a9nm-p7bu https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 37.0.0
2025-08-01T13:16:05.810759+00:00 Debian Oval Importer Affected by VCID-8w48-kann-e3cm https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 37.0.0
2025-08-01T13:03:39.374489+00:00 Debian Oval Importer Affected by VCID-bdmn-qdzn-7udm https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 37.0.0
2025-08-01T12:20:39.155987+00:00 Debian Oval Importer Fixing VCID-3824-qdkt-eqas https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 37.0.0
2025-08-01T12:20:11.892937+00:00 Debian Oval Importer Fixing VCID-9gmp-54ku-mqhx https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 37.0.0
2025-08-01T11:12:00.443454+00:00 Debian Oval Importer Fixing VCID-8w48-kann-e3cm https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 37.0.0
2025-08-01T11:00:00.835262+00:00 Debian Oval Importer Fixing VCID-gdfg-dkdy-sqfg https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 37.0.0
2025-08-01T10:53:19.685449+00:00 Debian Oval Importer Fixing VCID-7zq7-qzfp-6yav https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 37.0.0
2025-08-01T10:45:17.986567+00:00 Debian Oval Importer Fixing VCID-wc3k-a9nm-p7bu https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 37.0.0