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cvelistGitHub_MCVELIST:CVE-2023-28628
HistoryMar 27, 2023 - 8:20 p.m.

CVE-2023-28628 `authority-regex` returns the wrong authority in lambdaisland/uri

2023-03-2720:20:08
CWE-706
GitHub_M
www.cve.org
3
cve-2023-28628
authority-regex
lambdaisland/uri
clojure
clojurescript
uri
library
vulnerability
regex
malicious urls
host restrictions
upgrade

CVSS3

5.4

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

AI Score

6.3

Confidence

High

EPSS

0.001

Percentile

37.0%

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.

CNA Affected

[
  {
    "vendor": "lambdaisland",
    "product": "uri",
    "versions": [
      {
        "version": "< 1.14.120",
        "status": "affected"
      }
    ]
  }
]

CVSS3

5.4

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

AI Score

6.3

Confidence

High

EPSS

0.001

Percentile

37.0%