{"id":"CVE-2025-59350","aliases":["GHSA-c2fc-9q9c-5486","GO-2025-3972"],"url":"https://o3.security/vulnerability/CVE-2025-59350","summary":"Timing attacks against Proxy’s basic authentication are possible","details":"### Impact\nThe access control mechanism for the Proxy feature uses simple string comparisons and is therefore vulnerable to timing attacks. An attacker may try to guess the password one character at a time by sending all possible characters to a vulnerable mechanism and measuring the comparison instruction’s execution times.\nThe vulnerability is shown in figure 8.1, where both the username and password are compared with a short-circuiting equality operation.\n\n```golang\nif user != proxy.basicAuth.Username || pass != proxy.basicAuth.Password {\n```\n\nIt is currently undetermined what an attacker may be able to do with access to the proxy password.\n\n### Patches\n\n- Dragonfy v2.1.0 and above.\n\n### Workarounds\n\nThere are no effective workarounds, beyond upgrading.\n\n### References\n\nA third party security audit was performed by Trail of Bits, you can see the [full report](https://github.com/dragonflyoss/dragonfly/blob/main/docs/security/dragonfly-comprehensive-report-2023.pdf).\n\nIf you have any questions or comments about this advisory, please email us at [dragonfly-maintainers@googlegroups.com](mailto:dragonfly-maintainers@googlegroups.com).","published":"2025-09-17T19:43:24.085Z","modified":"2026-08-12T03:51:20.034808979Z","cvss":null,"epss":{"score":0.00338,"percentile":0.26194,"asOf":"2026-08-24"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/dragonflyoss/dragonfly","fixedVersion":"2.1.0"},{"ecosystem":"Go","name":"d7y.io/dragonfly/v2","fixedVersion":"2.1.0"}],"fix":null,"references":[{"type":"WEB","url":"https://github.com/dragonflyoss/dragonfly/blob/main/docs/security/dragonfly-comprehensive-report-2023.pdf"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/59xxx/CVE-2025-59350.json"},{"type":"ADVISORY","url":"https://github.com/dragonflyoss/dragonfly/security/advisories/GHSA-c2fc-9q9c-5486"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-59350"},{"type":"PACKAGE","url":"https://github.com/dragonflyoss/dragonfly"},{"type":"WEB","url":"https://pkg.go.dev/vuln/GO-2025-3972"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:20.034808979Z"}}