PT-2023-30310 · Unknown+1 · Urbackup Server+1

Nitipoom Jaroonchaipipat · Published 2023-11-07 · Updated 2025-09-29 · CVE-2023-47102

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions UrBackup Server version 2.5.31

Description The issue allows for brute-force enumeration of user accounts. This is possible because a failure message confirms when a username is not valid.

Recommendations For UrBackup Server version 2.5.31, consider modifying the error messages to not disclose whether a username is valid or not, to prevent brute-force enumeration of user accounts. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Side Channel Attack

Weakness Enumeration

CWE-203

Related Identifiers

ALT-PU-2024-12932

CVE-2023-47102

Affected Products

Alt Linux

Urbackup Server

References · 5

• 🔥 https://quantiano.github.io/cve-2023-47102 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2023-47102 · Security Note
• https://osv.dev/vulnerability/CVE-2023-47102 · Vendor Advisory
• https://nitipoom-jaroonchaipipat.github.io/security-research-portal/2023-47102 · Note
• https://t.me/cveNotify/136824 · Telegram Post