VulnerabilityModified
CVE-2020-14002
PuTTY 0.68 through 0.73 has an Observable Discrepancy leading to an information leak in the algorithm negotiation.
MEDIUM 5.9EPSS 3.15%
Does this matter?
Lower severity and a low EPSS score (3.15%). Track it; it rarely justifies an emergency change on its own.
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).
- CVSS 3.1
- 5.9 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 3.15% probability · 87th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-203
- Affected
- putty/putty · netapp/oncommand unified manager core package · fedoraproject/fedora
- Source
- cve@mitre.org
References
- https://lists.debian.org/debian-lts-announce/2024/04/msg00016.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/26TACCSQYYCPWAJYNAUIXJGZ5RGORJZV/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JPV4A77EDCT4BTFO5BE26ZH72BG4E5IJ/
- 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.htmlRelease 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
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/26TACCSQYYCPWAJYNAUIXJGZ5RGORJZV/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JPV4A77EDCT4BTFO5BE26ZH72BG4E5IJ/
- 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.htmlRelease 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.