by Kastro
Paper/Archive/CVE-2023-51639

CVE-2023-51639

Allegra Allegra — Allegra downloadExportedChart Directory Traversal Authentication Bypass Vulnerability

EPSS 2%CVSS 9.8
critical.is priorityof 100
46
CVSS 9.8 (CNA, NVD agree)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 84.6.846 × 2016.9No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
Allegra7.5.0.24–CNA
allegra7.5.0build29–CISA-ADP

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
zdi (CNA)9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refzerodayinitiative.com/advisories/ZDI-24-110advisorytrackplus.com/en/service/release-notes-reader/7-5-1-release-notes-2.html