CVE-2022-25292
Published: 24 February 2022
Summary
CVE-2022-25292 is a high-severity Out-of-bounds Write (CWE-787) vulnerability in Watchguard Fireware. Its CVSS base score is 8.8 (High).
Operationally, ranked in the top 10.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
A stack-based buffer overflow vulnerability tracked as CVE-2022-25292 affects the wgagent component in WatchGuard Firebox and XTM appliances running Fireware OS versions prior to 12.7.2_U2, 12.x prior to 12.1.3_U8, and 12.2.x through 12.5.x prior to 12.5.9_U2. The flaw, assigned CWE-121 and carrying a CVSS 3.1 score of 8.8, resides in the handling of firmware upgrade images and can be triggered when an authenticated remote user supplies a malicious file.
An authenticated remote attacker can initiate a firmware update using a crafted upgrade image to trigger the overflow, potentially achieving arbitrary code execution on the appliance with high impact to confidentiality, integrity, and availability.
Vendor release notes for Fireware 12.7.2 and related branches indicate that the issue is resolved by applying the listed patched versions, which contain fixes for the buffer handling logic in wgagent during upgrade processing. The associated EPSS scores remain low, with a current value of 0.0495 and a peak of 0.0576.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-29981
Vulnerability details
A wgagent stack-based buffer overflow in WatchGuard Firebox and XTM appliances allows an authenticated remote attacker to potentially execute arbitrary code by initiating a firmware update with a malicious upgrade image. This vulnerability impacts Fireware OS before 12.7.2_U2, 12.x before…
more
12.1.3_U8, and 12.2.x through 12.5.x before 12.5.9_U2.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.