CVE-2023-2523
High PUBLISHEDWeaver E-Office unrestricted upload
Not yet in CISA KEV
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
A vulnerability was found in Weaver E-Office 9.5. It has been rated as critical. Affected by this issue is some unknown functionality of the file App/Ajax/ajax.php?action=mobile_upload_save. The manipulation of the argument upload_quwan leads to unrestricted upload. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. VDB-228014 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way. Eine kritische Schwachstelle wurde in Weaver E-Office 9.5 ausgemacht. Hierbei geht es um eine nicht exakt ausgemachte Funktion der Datei App/Ajax/ajax.php?action=mobile_upload_save. Mittels Manipulieren des Arguments upload_quwan mit unbekannten Daten kann eine unrestricted upload-Schwachstelle ausgenutzt werden. Umgesetzt werden kann der Angriff über das Netzwerk. Der Exploit steht zur öffentlichen Verfügung.
- CVE Published
- May 04, 2023
- Exploitation Reported
- May 04, 2023
- CVSS
- 7.3 High
- EPSS
- —
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| Weaver |
E-Office
|
9.5 |
Affected |
CVE References
- GitHub — RCEraser/cve github.com · Exploit https://github.com/RCEraser/cve/blob/main/Weaver.md
- Technical Description — vuldb.com vuldb.com · Technical Description https://vuldb.com/?id.228014
- Signature — vuldb.com vuldb.com · Signature https://vuldb.com/?ctiid.228014
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| The Shadowserver First | 2023-05-04 18:00 UTC |
No detection artifacts or sensor request patterns are available for this CVE yet.
Check back as sensor telemetry and scanner integrations are updated.
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users via the Pro API.
Learn About Virtual PatchesCVSS Scores
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
AV:N/AC:L/Au:N/C:P/I:P/A:P
Exploitation Status
Exploited in the wild
Recorded 2023-05-04 18:00:05 UTC · The Shadowserver
Weaknesses (CWE)
-
Unrestricted Upload of File with Dangerous Type
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
18:00 UTC about 3 years ago18:00 UTC · about 3 years ago
CVE published
Vulnerability disclosed publicly
-
18:00 UTC about 3 years ago18:00 UTC · about 3 years ago
Added to KEVIntel KEV Feed
High-confidence, third-party attested exploitation
-
16:14 UTC about 3 years ago16:14 UTC · about 3 years ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2023-2523
{
"cve_id": "CVE-2023-2523",
"title": "Weaver E-Office unrestricted upload",
"affected_vendor": "Weaver",
"affected_product": "E-Office",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "High",
"cvss_score": 7.3,
"epss_score": null,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}