XXE in Apache Solr
CVE-2019-12401
Solr versions 1.3.0 to 1.4.1, 3.1.0 to 3.6.2 and 4.0.0 to 4.10.4 are vulnerable to an XML resource consumption attack (a.k.a. Lol Bomb) via it’s update handler.?By leveraging XML DOCTYPE and ENTITY type elements, the attacker can create a pattern that will expand when the server parses the XML causing OOMs.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.085 (95.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.085 · newest: 0.085 · change: 0.000
Affected products
- Apache Solr — versions 1.3.0 to 1.4.1, 3.1.0 to 3.6.2, 4.0.0 to 4.10.4
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.apache.org/thread.html/7ab5e95a1a0b4f35ffe53f1eb0cb74b4348b49d41b72ac155b… (mailing-list)
- lists.apache.org/thread.html/048ae6e4f84a88e8856f766320b48ad91f9fca2c6f621aa2c4… (mailing-list)
- www.openwall.com/lists/oss-security/2019/09/10/1 (mailing-list, Mailing List, Third Party Advisory)
- lists.apache.org/thread.html/521d10a19bfb590f86dff41820ccfb11e92281f233a12c8826… (mailing-list)
- lists.apache.org/thread.html/1c92300643f48f13bc59b15e3f886ba62bae1798c7d4c2e5c1… (mailing-list)
- lists.apache.org/thread.html/60a924662ead9aeea74e8ea128d9ca935f8de925aa71b15ab2… (mailing-list)
- lists.apache.org/thread.html/db8eaca456d03c00a66cbe37548978318d424b9997e3fd7f5c… (mailing-list)
- mail-archives.us.apache.org/mod_mbox/www-announce/201909.mbox/<CAECwjAXU4=kAo5D… (Broken Link, Vendor Advisory, mailing-list, Mailing List)
- lists.apache.org/thread.html/0ec231c5ed8d242890e21806d25fdd47f80cc47cac278d2fc1… (mailing-list)
- security.netapp.com/advisory/ntap-20190926-0002/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2019-12401?
- CVE-2019-12401 is a high-severity vulnerability in Apache Solr, classified under Improper Restriction of Recursive Entity References in DTDs (XML Entity Expansion). CVSS score: 7.5/10. Published 2019-09-10.
- How severe is CVE-2019-12401?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2019-12401 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.