What is CVE-2011-3288?

CVE-2011-3288 is a high-severity vulnerability in Cisco Unified Presence, classified under Improper Restriction of Recursive Entity References in DTDs (XML Entity Expansion). CVSS score: 7.5/10. Published 2011-10-06.

How severe is CVE-2011-3288?

High severity. CVSS v3 base score is 7.5 out of 10.

XXE in Cisco Unified Presence

CVE-2011-3288

Cisco Unified Presence before 8.5(4) does not properly detect recursion during entity expansion, which allows remote attackers to cause a denial of service (memory and CPU consumption, and process crash) via a crafted XML document containing a large number of nested entity references, aka Bug IDs CSCtq89842 and CSCtq88547, a similar issue to CVE-2003-1564.

EPSS: 0.018 (76.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Cisco Unified_presence
N/a — versions n/a

Weakness classification (CWE)

CWE-776 — Improper Restriction of Recursive Entity References in DTDs (XML Entity Expansion)

References

psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Not Applicable)
nvd@nist.gov (Vendor Advisory)

Frequently asked questions

What is CVE-2011-3288?: CVE-2011-3288 is a high-severity vulnerability in Cisco Unified Presence, classified under Improper Restriction of Recursive Entity References in DTDs (XML Entity Expansion). CVSS score: 7.5/10. Published 2011-10-06.
How severe is CVE-2011-3288?: High severity. CVSS v3 base score is 7.5 out of 10.