XXE in Cisco Broadworks Messaging Server
CVE-2021-1530
A vulnerability in the web-based management interface of Cisco BroadWorks Messaging Server Software could allow an authenticated, remote attacker to access sensitive information or cause a partial denial of service (DoS) condition on an affected system. This vulnerability is due to improper handling of XML External Entity (XXE) entries when parsing certain XML files. An attacker could exploit this vulnerability by uploading a crafted XML file that contains references to external entities. A successful exploit could allow the attacker to retrieve files from the local system, resulting in the disclosure of sensitive information, or cause the application to consume available resources, resulting in a partial DoS condition on an affected system. There are workarounds that address this vulnerability.
Vulnerability class: XXE (XML External Entity)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L.
EPSS exploit prediction
EPSS: 0.011 (64.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 64.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000
Affected products
- Cisco Broadworks Messaging Server — versions 22.0
- Cisco Broadworks
Weakness classification (CWE)
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-bwms-xxe… (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-1530?
- CVE-2021-1530 is a medium-severity vulnerability in Cisco Broadworks Messaging Server, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 5.4/10. Published 2021-05-06.
- How severe is CVE-2021-1530?
- Medium severity. CVSS v3 base score is 5.4 out of 10.