XXE in Symantec Messaging Gateway
CVE-2018-12243
The Symantec Messaging Gateway product prior to 10.6.6 may be susceptible to a XML external entity (XXE) exploit, which is a type of issue where XML input containing a reference to an external entity is processed by a weakly configured XML parser. The attack uses file URI schemes or relative paths in the system identifier to access files that should not normally be accessible.
Vulnerability class: XXE (XML External Entity)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (53.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Symantec Messaging Gateway
- Symantec Corporation Messaging Gateway — versions Prior to 10.6.6
Weakness classification (CWE)
References
- support.symantec.com/en_US/article.SYMSA1461.html (Mitigation, Vendor Advisory)
- www.securityfocus.com/bid/105330 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2018-12243?
- CVE-2018-12243 is a high-severity vulnerability in Symantec Messaging Gateway, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 8.8/10. Published 2018-09-19.
- How severe is CVE-2018-12243?
- High severity. CVSS v3 base score is 8.8 out of 10.