CVEvulnerability
CVE-2020-14002
5.9 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2020-06-29
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.9 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- CVSS 2.0 ([email protected])
- 4.3 MEDIUM — AV:N/AC:M/Au:N/C:P/I:N/A:N
- Weaknesses
- CWE-203
Description
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).
Affected configurations
• putty putty (>= 0.68 <= 0.73)
• netapp oncommand unified manager core package
• fedoraproject fedora 31
• fedoraproject fedora 32
Related
Weakness · CWE (1)
- CWE-203 Observable Discrepancy weakness
References
- https://lists.debian.org/debian-lts-announce/2024/04/msg00016.html lists.debian.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/26TACCSQYYCPWAJYNAUIXJGZ5RGORJZV/ lists.fedoraproject.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JPV4A77EDCT4BTFO5BE26ZH72BG4E5IJ/ lists.fedoraproject.org
- https://lists.tartarus.org/pipermail/putty-announce/ Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200717-0003/ Third Party Advisory
- https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html Release Notes, Third Party Advisory
- https://www.fzi.de/en/news/news/detail-en/artikel/fsa-2020-2-ausnutzung-eines-informationslecks-fuer-gezielte-mitm-angriffe-auf-ssh-clients/ Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2024/04/msg00016.html lists.debian.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/26TACCSQYYCPWAJYNAUIXJGZ5RGORJZV/ lists.fedoraproject.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JPV4A77EDCT4BTFO5BE26ZH72BG4E5IJ/ lists.fedoraproject.org
- https://lists.tartarus.org/pipermail/putty-announce/ Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200717-0003/ Third Party Advisory
- https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html Release Notes, Third Party Advisory
- https://www.fzi.de/en/news/news/detail-en/artikel/fsa-2020-2-ausnutzung-eines-informationslecks-fuer-gezielte-mitm-angriffe-auf-ssh-clients/ Third Party Advisory