CVE-2023-45727
Proself Enterprise/Standard Edition Ver5.62 and earlier, Proself Gateway Edition Ver1.65 and earlier, and Proself Mail Sanitize Edition Ver1.08 and earlier…
- Severity
- 7.5 / 10
- High · CVSS 3.1
- Exploit chance (EPSS)
- 4.82%
- Chance of exploitation in the next 30 days. Higher than 91.98% of scored vulnerabilities.
- Known exploited
- Yes
- In CISA's catalog since Dec 3, 2024
- Weakness
- CWE-611 Improper Restriction of XML External Entity Reference
- CWE-611 Improper Restriction of XML External Entity Reference
- Fix
- None yet
- No fixed version published
Description
Proself Enterprise/Standard Edition Ver5.62 and earlier, Proself Gateway Edition Ver1.65 and earlier, and Proself Mail Sanitize Edition Ver1.08 and earlier allow a remote unauthenticated attacker to conduct XML External Entity (XXE) attacks. By processing a specially crafted request containing malformed XML data, arbitrary files on the server containing account information may be read by the attacker.
How to fix
No fixed version has been published yet. Until one is, remove or replace the package, or turn off or isolate the affected feature. This page updates when a fix ships.
Severity breakdown
CVSS 3.1 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Weakness
CWE-611: Improper Restriction of XML External Entity Reference
The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.
How to prevent it
- Implementation, System Configuration: Many XML parsers and validators can be configured to disable external entity expansion.
CWE-611: Improper Restriction of XML External Entity Reference
The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.
How to prevent it
- Implementation, System Configuration: Many XML parsers and validators can be configured to disable external entity expansion.
References
Advisories
Other links
Timeline
- Published
- Added to CISA's Known Exploited Vulnerabilities catalog
- Remediation due for U.S. federal agencies
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-3x94-m842-937c PhpSpreadsheet: XmlScanner Bypass via ISO-2022 Escape Sequences Allows XXE and Denial of Service | High | Same weakness, CWE-611 |
| GHSA-rxj4-h86g-25gc PhpSpreadsheet: XmlScanner Bypass via Double-Encoded unentity() TOCTOU Allows XXE and Denial of Service | High | Same weakness, CWE-611 |
| GHSA-8678-w3jw-xfc2 Nokogiri: XML::Schema on JRuby allows network requests when NONET is set, bypassing CVE-2020-26247 | Low | Same weakness, CWE-611 |
| GHSA-x4r9-gmw3-hxww GeoServer has a Server-Side Request Forgery (SSRF) Vulnerability in its XML Entity Resolution | High | Same weakness, CWE-611 |
| GHSA-x6g4-fwcc-jj8w Symfony has XXE (Local File Disclosure) in DomCrawler::addXmlContent() via validateOnParse = true | High | Same weakness, CWE-611 |
| GHSA-5wm8-gmm8-39j9 fast-xml-builder allows attribute values with unwanted quotes to bypass malicious or unwanted attributes | High | Same weakness, CWE-611 |
| GHSA-pj6p-9p8x-5mfc Alkacon OpenCms is vulnerable to XXE when the <!DOCTYPE> refers to an external host | High | Same weakness, CWE-611 |
| GHSA-rcc6-6q2f-m2cw Alkacon OpenCms allows remote unauthenticated attackers to obtain sensitive information | High | Same weakness, CWE-611 |
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