XXE in Xmlsoft Libxml2
CVE-2003-1564
libxml2, possibly before 2.5.0, does not properly detect recursion during entity expansion, which allows context-dependent attackers to cause a denial of service (memory and CPU consumption) via a crafted XML document containing a large nu…
EPSS: 0.016 (73.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
Affected products
- Xmlsoft Libxml2
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (x_refsource_SECUNIA, Broken Link, third-party-advisory)
- cve@mitre.org (x_refsource_MISC, Release Notes)
- cve@mitre.org (mailing-list, x_refsource_MLIST, Broken Link)
- cve@mitre.org (x_refsource_MISC, Issue Tracking)
- cve@mitre.org (mailing-list, x_refsource_MLIST, Patch, Mailing List)
- cve@mitre.org (x_refsource_REDHAT, vendor-advisory, Broken Link)
Frequently asked questions
- What is CVE-2003-1564?
- CVE-2003-1564 is a medium-severity vulnerability in Xmlsoft Libxml2, classified under Improper Restriction of Recursive Entity References in DTDs (XML Entity Expansion). CVSS score: 6.5/10. Published 2003-12-31.
- How severe is CVE-2003-1564?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2003-1564 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.