Auth bypass in Apache Solr
CVE-2020-13957
Apache Solr versions 6.6.0 to 6.6.6, 7.0.0 to 7.7.3 and 8.0.0 to 8.6.2 prevents some features considered dangerous (which could be used for remote code execution) to be configured in a ConfigSet that's uploaded via API without authentication/authorization. The checks in place to prevent such features can be circumvented by using a combination of UPLOAD/CREATE actions.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.793 (99.6th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.793 · newest: 0.793 · change: 0.000
Affected products
- Apache Solr
- Apache Solr — versions Apache Solr 6.6.0 to 6.6.6, 7.0.0 to 7.7.3, 8.0.0 to 8.6.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- mail-archives.us.apache.org/mod_mbox/www-announce/202010.mbox/<CAECwjAWCVLoVaZy… (Mailing List, Vendor Advisory)
- lists.apache.org/thread.html/r226c1112bb41e7cd427862d875eff9877a20a40242c2542f4… (mailing-list)
- lists.apache.org/thread.html/r4ca8ba5980d9049cf3707798aa3116ee76c1582f171ff452a… (mailing-list)
- security.netapp.com/advisory/ntap-20201023-0002/ (Third Party Advisory)
- lists.apache.org/thread.html/r8b1782d42d0a4ce573495d5d9345ad328d652c68c411ccdb2… (mailing-list)
- lists.apache.org/thread.html/r1c783d3d81ba62f3381a17a4d6c826f7dead3a132ba42349c… (mailing-list)
- lists.apache.org/thread.html/r7512ae552cd9d14ab8b1bc0a7e95f2ec52ae85364f068d403… (mailing-list)
- lists.apache.org/thread.html/r9d7356f209ee30d702b6a921c866564eb2e291b126640c7ab… (mailing-list)
- lists.apache.org/thread.html/r5557641fcf5cfd99260a7037cfbc8788fb546b72c98a90057… (mailing-list)
- lists.apache.org/thread.html/r3d1e24a73e6bffa1d6534e1f34c8f5cbd9999495e7d933640… (mailing-list)
Frequently asked questions
- What is CVE-2020-13957?
- CVE-2020-13957 is a critical-severity vulnerability in Apache Solr, classified under Incorrect Authorization. CVSS score: 9.8/10. Published 2020-10-13.
- How severe is CVE-2020-13957?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2020-13957 known to be exploited?
- 29 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.