Fossil
CVE-2021-36377
HIGH
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Lifecycle Timeline
1DescriptionNVD
Fossil before 2.14.2 and 2.15.x before 2.15.2 often skips the hostname check during TLS certificate validation.
AnalysisAI
Fossil before 2.14.2 and 2.15.x before 2.15.2 often skips the hostname check during TLS certificate validation. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Technical ContextAI
This vulnerability is classified under CWE-295. Fossil before 2.14.2 and 2.15.x before 2.15.2 often skips the hostname check during TLS certificate validation. Affected products include: Fossil-Scm Fossil, Fedoraproject Fedora. Version information: before 2.14.2.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
Fossil 2.18 on Windows allows attackers to cause a denial of service (daemon crash) via an XSS payload in a ticket. Rate
http_transport.c in Fossil before 2.4, when the SSH sync protocol is used, allows user-assisted remote attackers to exec
Fossil before 2.10.2, 2.11.x before 2.11.2, and 2.12.x before 2.12.1 allows remote authenticated users to execute arbitr
Same weakness CWE-295 – Improper Certificate Validation
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External POC / Exploit Code
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