CVE-2020-9283
CVE-2020-9283 is a high-severity vulnerability in Golang Package Ssh with a CVSS 3.x base score of 7.5. Its EPSS exploit-prediction score of 21% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-347.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v2: 5.0
- EPSS exploit prediction: 21% (97th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-347
- Affected product: Golang Package Ssh
- Published:
- Last modified:
Description
golang.org/x/crypto before v0.0.0-20200220183623-bac4c82f6975 for Go allows a panic during signature verification in the golang.org/x/crypto/ssh package. A client can attack an SSH server that accepts public keys. Also, a server can attack any SSH client.
Frequently asked questions
- What is CVE-2020-9283?
- golang.org/x/crypto before v0.0.0-20200220183623-bac4c82f6975 for Go allows a panic during signature verification in the golang.org/x/crypto/ssh package. A client can attack an SSH server that accepts public keys. Also, a server can attack any SSH client.
- How severe is CVE-2020-9283?
- CVE-2020-9283 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2020-9283 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 21% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-9283?
- CVE-2020-9283 primarily affects Golang Package Ssh. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2020-9283?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2020-9283 published?
- CVE-2020-9283 was published on 2020-02-20 and last updated on 2026-06-17.
References
- http://packetstormsecurity.com/files/156480/Go-SSH-0.0.2-Denial-Of-Service.html
- https://groups.google.com/forum/#%21topic/golang-announce/3L45YRc91SY
- https://lists.debian.org/debian-lts-announce/2020/10/msg00014.html
- https://lists.debian.org/debian-lts-announce/2020/11/msg00027.html
- https://lists.debian.org/debian-lts-announce/2020/11/msg00031.html
- https://lists.debian.org/debian-lts-announce/2023/06/msg00017.html
Affected products (2)
- cpe:2.3:a:golang:package_ssh:0.0.0-20200220183623-bac4c82f6975:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
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