Vulnerability · Published Mar 27, 2023 · Assigned by GitHub_M
CVE-2023-28628`authority-regex` returns the wrong authority in lambdaisland/uri
Medium 5.4
In plain English
A medium-severity security flaw in uri from lambdaisland. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 46% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
lambdaisland/uri is a pure Clojure/ClojureScript URI library. In versions prior to 1.14.120 `authority-regex` allows an attacker to send malicious URLs to be parsed by the `lambdaisland/uri` and return the wrong authority. This issue is similar to but distinct from CVE-2020-8910. The regex in question doesn't handle the backslash (`\`) character in the username correctly, leading to a wrong output. ex. a payload of `https://example.com\\@google.com` would return that the host is `google.com`, but the correct host should be `example.com`. Given that the library returns the wrong authority this may be abused to bypass host restrictions depending on how the library is used in an application. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | lambdaisland-uri-clojure | no fix listed | DEBIAN-CVE-2023-28628 |
| Debian:13 | lambdaisland-uri-clojure | no fix listed | DEBIAN-CVE-2023-28628 |
| Debian:14 | lambdaisland-uri-clojure | no fix listed | DEBIAN-CVE-2023-28628 |
| Maven | lambdaisland:uri | 1.14.120 | GHSA-cp4w-6x4w-v2h5 |
| Ubuntu:25.10 | lambdaisland-uri-clojure | no fix listed | UBUNTU-CVE-2023-28628 |
| Ubuntu:26.04:LTS | lambdaisland-uri-clojure | no fix listed | UBUNTU-CVE-2023-28628 |
| Ubuntu:26.10 | lambdaisland-uri-clojure | no fix listed | UBUNTU-CVE-2023-28628 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| lambdaisland | uri | < 1.14.120 |
Weakness: CWE-706 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N