PT-2021-7536 · Boa · Boa

Attritionorg · Published 2021-05-25 · Updated 2025-06-11 · CVE-2021-33558

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:C/I:N/A:N

Name of the Vulnerable Software and Affected Versions Boa version 0.94.13

Description The issue is related to configuration errors in files such as backup.html, preview.html, js/log.js, log.html, email.html, online-users.html, and config.js of the Boa HTTP server. Exploitation of this issue may allow a remote attacker to gain unauthorized access to protected information. It is noted that this might be a site-specific issue because the mentioned files are not part of the standard Boa distribution.

Recommendations For Boa version 0.94.13, consider removing or restricting access to the files backup.html, preview.html, js/log.js, log.html, email.html, online-users.html, and config.js to prevent potential exploitation. Ensure proper configuration to avoid exposing sensitive information. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Weakness Enumeration

CWE-16

Related Identifiers

BDU:2022-07372

CVE-2021-33558

Affected Products

Boa

References · 13

• 🔥 https://github.com/mdanzaruddin/CVE-2021-33558. · Exploit
• 🔥 https://github.com/mdanzaruddin/CVE-2021-33558./issues/1 · Exploit
• https://osv.dev/vulnerability/CVE-2021-33558 · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-07372 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-33558 · Security Note
• https://itsec.ru/news/zloumishlenniki-vzlamivayut-energoseti-ispolzuya-uyazvimosti-v-ustarevshem-po · Note
• https://sourceforge.net/projects/boa/files/boa/0.94.13 · Note
• https://t.me/cvenotify/82812 · Telegram Post
• https://twitter.com/pdnuclei_bot/status/1932784898970169394 · Twitter Post
• https://t.me/cvenotify/88862 · Telegram Post
• https://xakep.ru/2022/11/24/boa-iot · Note
• https://securitylab.ru/news/534938.php · Note
• https://t.me/cvenotify/39376 · Telegram Post