Vulnerability · Published Nov 22, 2024 · Assigned by zdi

CVE-2023-51639Allegra downloadExportedChart Directory Traversal Authentication Bypass Vulnerability

Critical 9.8

In plain English

A critical-severity path traversal in Allegra from Allegra. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.5% (higher than 85% of all known vulnerabilities).

Severity (CVSS 3.0)9.8Critical

Exploit odds (30 days)2.5%top 15.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Allegra downloadExportedChart Directory Traversal Authentication Bypass Vulnerability. This vulnerability allows remote attackers to bypass authentication on affected installations of Allegra. Authentication is not required to exploit this vulnerability. The specific flaw exists within the downloadExportedChart action. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-22361.

Affected products (as reported)

Vendor	Product	Versions
Allegra	Allegra	7.5.0.24

Weakness: CWE-22 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

ZDI-24-110 x_research-advisory
vendor-provided URL vendor-advisory