CVE-2019-17558
100Vexday Risk Score
Patch now. It under exploitation confirmed by CISA and has a working public exploit.
ssvc Actcvss 7.5epss 99%
from disclosure to weapon0 days
Published on NVDDec 30
1st PoCNov 1
metasploitOct 29
CISA KEV+674d
exploitation probability
99%top 1% of all CVEs
observed exploitation
yesCISA + VulnCheck
10 public exploit(s)
Action required by CISAfederal deadline: 2022-05-03
Apply updates per vendor instructions.
Versions
Affected
maven/org.apache.solr:solr-core >= 5.0.0, <= 5.5.5; maven/org.apache.solr:solr-core >= 6.0.0, <= 6.6.6; maven/org.apache.solr:solr-core >= 7.0.0, <= 7.7.2; maven/org.apache.solr:solr-core >= 8.0.0, <= 8.3.1
Fixed in
maven/org.apache.solr:solr-core 8.4.0; maven/org.apache.solr:solr-core 8.4.0; maven/org.apache.solr:solr-core 8.4.0; maven/org.apache.solr:solr-core 8.4.0
Researched and written with AI from the vendor advisory and public analysis, with the sources above. Always confirm the fixed version in the official advisory before acting.
Apache Solr 5.0.0 to Apache Solr 8.3.1 are vulnerable to a Remote Code Execution through the VelocityResponseWriter. A Velocity template can be provided through Velocity templates in a configset `velocity/` directory or as a parameter. A user defined configset could contain renderable, potentially malicious, templates. Parameter provided templates are disabled by default, but can be enabled by setting `params.resource.loader.enabled` by defining a response writer with that setting set to `true`. Defining a response writer requires configuration API access. Solr 8.4 removed the params resource loader entirely, and only enables the configset-provided template rendering when the configset is `trusted` (has been uploaded by an authenticated user).
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
n/a · Apache Solrpublic PoCs found — 10✓ VexDay Proof
exploitdb✓ VexDay Proofwww.exploit-db.com/exploits/48338exploitdbwww.exploit-db.com/exploits/47572unverifiedgithubgithub.com/zhzyker/exphub★ 4291githubgithub.com/Ma1Dong/Solr_CVE-2019-17558★ 2githubgithub.com/thelostworldFree/CVE-2019-17558_Solr_Vul_Tool★ 1githubgithub.com/rogerzeferino/Apache-Solr-RCE-CVE-2019-17558★ 0githubgithub.com/xkyrage/Exploit_CVE-2019-17558-RCE★ 0cve_referencepacketstormsecurity.com/files/157078/Apache-Solr-8.3.0-Velocity-Template-Remote-Code-Execution.htmlunverifiedvulncheckvulncheck.com/xdb/7bb322405f10unverifiedvulncheckvulncheck.com/xdb/6918ed306441unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
http://packetstormsecurity.com/files/157078/Apache-Solr-8.3.0-Velocity-Template-Remote-Code-Execution.htmlhttps://issues.apache.org/jira/browse/SOLR-13971https://lists.apache.org/thread.html/r0b7b9d4113e6ec1ae1d3d0898c645f758511107ea44f0f3a1210c5d5%40%3Cissues.lucene.apache.org%3Ehttps://lists.apache.org/thread.html/r12ab2cb15a34e49b4fecb5b2bdd7e10f3e8b7bf1f4f47fcde34d3a7c%40%3Cissues.lucene.apache.org%3Ehttps://lists.apache.org/thread.html/r19d23e8640236a3058b4d6c23e5cd663fde182255f5a9d63e0606a66%40%3Cdev.lucene.apache.org%3Ehttps://lists.apache.org/thread.html/r1d4a247329a8478073163567bbc8c8cb6b49c6bfc2bf58153a857af1%40%3Ccommits.druid.apache.org%3Ehttps://lists.apache.org/thread.html/r204ba2a9ea750f38d789d2bb429cc0925ad6133deea7cbc3001d96b5%40%3Csolr-user.lucene.apache.org%3Ehttps://lists.apache.org/thread.html/r25f1bd4545617f5b86dde27b4c30fec73117af65598a30e20209739a%40%3Cissues.lucene.apache.org%3Ehttps://lists.apache.org/thread.html/r339865b276614661770c909be1dd7e862232e3ef0af98bfd85686b51%40%3Cdev.lucene.apache.org%3Ehttps://lists.apache.org/thread.html/r36e35fd76239a381643555966fb3e72139e018d52d76544fb42f96d8%40%3Cissues.lucene.apache.org%3Ehttps://lists.apache.org/thread.html/r5074d814d3a8c75df4b20e66bfd268ee0a73ddea7e85070cec3ae78d%40%3Cissues.lucene.apache.org%3Ehttps://lists.apache.org/thread.html/r58c58fe51c87bc30ee13bb8b4c83587f023edb349018705208e65b37%40%3Cissues.lucene.apache.org%3E