Medium severity5.9NVD Advisory· Published May 30, 2023· Updated Jun 17, 2026
CVE-2023-32691
CVE-2023-32691
Description
gost (GO Simple Tunnel) is a simple tunnel written in golang. Sensitive secrets such as passwords, token and API keys should be compared only using a constant-time comparison function. Untrusted input, sourced from a HTTP header, is compared directly with a secret. Since this comparison is not secure, an attacker can mount a side-channel timing attack to guess the password. As a workaround, this can be easily fixed using a constant time comparing function such as crypto/subtle's ConstantTimeCompare.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/ginuerzh/gostGo | <= 2.11.5 | — |
Affected products
3- cpe:2.3:a:go_simple_tunnel_project:go_simple_tunnel:*:*:*:*:*:go:*:*Range: <=2.11.5
Patches
Vulnerability mechanics
References
4- github.com/ginuerzh/gost/security/advisories/GHSA-qjrq-hm79-49wwnvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-qjrq-hm79-49wwghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2023-32691ghsaADVISORY
- github.com/ginuerzh/gost/blob/1c62376e0880e4094bd3731e06bd4f7842638f6a/auth.gonvdProductWEB
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