PT-2021-16497 · Solarwinds · Solarwinds Serv-U

Martin Rakhmanov · Published 2021-02-03 · Updated 2022-07-12 · CVE-2021-25276

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Name of the Vulnerable Software and Affected Versions: SolarWinds Serv-U versions prior to 15.2.2 Hotfix 1

Description: The issue concerns a directory containing user profile files, including password hashes, which is world readable and writable. An unprivileged Windows user with access to the server's filesystem can exploit this by copying a valid profile file to the directory, potentially gaining access to read or replace arbitrary files with LocalSystem privileges.

Recommendations: For versions prior to 15.2.2 Hotfix 1, update to version 15.2.2 Hotfix 1 to resolve the issue. As a temporary workaround, consider restricting access to the directory containing user profile files to prevent unauthorized modifications.

Exploit

Fix

Incorrect Permission

Weakness Enumeration

CWE-732

Related Identifiers

CVE-2021-25276

Affected Products

Solarwinds Serv-U

References · 5

• 🔥 https://trustwave.com/en-us/resources/blogs/spiderlabs-blog/full-system-control-with-new-solarwinds-orion-based-and-serv-u-ftp-vulnerabilities · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-25276 · Security Note
• https://osv.dev/vulnerability/CVE-2021-25276 · Vendor Advisory
• https://t.me/true_secator/1393 · Telegram Post
• https://t.me/ckure/6771 · Telegram Post