CVEs / CVE-2023-45727
CVE-2023-45727: North Grid Proself Improper Restriction of XML External Entity (XXE) Reference Vulnerability
- Known exploited in the CISA KEV catalog since 3 Dec 2024
- high 7.5 CVSS 3.1 (NVD)
- EPSS 4.82% chance of exploitation in the next 30 days, higher than 91% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
North Grid Proself Enterprise/Standard, Gateway, and Mail Sanitize contain an improper restriction of XML External Entity (XXE) reference vulnerability, which could allow a remote, unauthenticated attacker to conduct an XXE attack.
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| North Grid Corporation Proself Enterprise/Standard Edition | Ver5.62 and earlier | — |
| North Grid Corporation Proself Gateway Edition | Ver1.65 and earlier | — |
| North Grid Corporation Proself Mail Sanitize Edition | Ver1.08 and earlier | — |
| northgrid proself | up to and including 5.62 | — |
| northgrid proself | up to and including 1.65 | — |
| northgrid proself | up to and including 1.08 | — |
Exploitation
| In CISA KEV since | 3 Dec 2024 |
|---|---|
| Due date for US federal agencies | 24 Dec 2024 |
| Used in ransomware campaigns | Unknown |
| Required action | Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. |
Severity
| CVSS 3.1 | 7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NScored by NVD |
|---|---|
| Weakness | CWE-611 |
References
- CVE-2023-45727 on NVD
- CVE-2023-45727 in the CISA KEV catalog
- https://www.proself.jp/information/153/ (cited by CISA)
- https://jvn.jp/en/jp/JVN95981460/ Third Party Advisory
- https://www.proself.jp/information/153/ Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-45727 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.