XSS in doc_link

CVE-2021-29625 → View on GitHub ↗ View on CVE.org ↗ View on NVD ↗

Description

Impact

Users of MySQL, MariaDB, PgSQL and SQLite are affected. XSS is in most cases prevented by strict CSP in all modern browsers. The only exception is when Adminer is using a pdo_ extension to communicate with the database (it is used if the native extensions are not enabled). In browsers without CSP, Adminer versions 4.6.1 to 4.8.0 are affected.

Patches

Patched by 4043092, included in version 4.8.1.

Workarounds

Do both:
* Use browser supporting strict CSP.
* Enable the native PHP extensions (e.g. mysqli) or disable displaying PHP errors (display_errors).

References

https://sourceforge.net/p/adminer/bugs-and-features/797/

For more information

If you have any questions or comments about this advisory:
* Comment at 4043092.

Basic information

Type
reviewed
Severity
high
Advisory on GitHub
Open advisory ↗
Repository advisory
Open repository advisory ↗
Source code
Not specified
Published (advisory)
2022-03-18 17:49:28 UTC
Updated
2023-02-01 05:05:47 UTC
GitHub reviewed
2021-05-17 19:18:12 UTC
NVD published
2021-05-19

EPSS Score

Score Percentile
29.51% 96.61%

CVSS Scores

Base score Version Severity Vector
7.5 3.1 —
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.

Identifiers

Type Value
GHSA GHSA-2v82-5746-vwqc ↗
CVE CVE-2021-29625 ↗

CWEs

CWE id Name
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Credits

  • stypr (analyst)

Affected packages (1)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
composer vrana/adminer >= 4.7.8, < 4.8.1 4.8.1 —

References

cvelogic Threat Intelligence