Vulnerability · Published Nov 22, 2024 · Assigned by zdi

CVE-2023-51640Allegra extarctZippedFile Directory Traversal Remote Code Execution Vulnerability

High 7.2

In plain English

A high-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 1.8% (higher than 79% of all known vulnerabilities).

Severity (CVSS 3.0)7.2High

Exploit odds (30 days)1.8%top 20.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Allegra extarctZippedFile Directory Traversal Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Allegra. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the extarctZippedFile [sic] method. 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 execute code in the context of LOCAL SERVICE. Was ZDI-CAN-22504.

Affected products (as reported)

Vendor	Product	Versions
Allegra	Allegra	7.5.0 build 29

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

References

ZDI-24-107 x_research-advisory
vendor-provided URL vendor-advisory