CVE-2018-11776
100Vexday Risk Score
Patch now. It under exploitation confirmed by CISA and has a working public exploit.
ssvc Actcvss 8.1epss 100%
from disclosure to weapon1 days
Published on NVDAug 22
1st PoC+1d
metasploitAug 22
CISA KEV+1169d
exploitation probability
100%top 1% of all CVEs
observed exploitation
yesCISA + VulnCheck
41 public exploit(s)
Action required by CISAfederal deadline: 2022-05-03
Apply updates per vendor instructions.
Versions
Affected
maven/org.apache.struts:struts2-core >= 2.0.4, <= 2.3.34; maven/org.apache.struts:struts2-core >= 2.5, <= 2.5.16
Fixed in
maven/org.apache.struts:struts2-core 2.3.35; maven/org.apache.struts:struts2-core 2.5.17
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 Struts versions 2.3 to 2.3.34 and 2.5 to 2.5.16 suffer from possible Remote Code Execution when alwaysSelectFullNamespace is true (either by user or a plugin like Convention Plugin) and then: results are used with no namespace and in same time, its upper package have no or wildcard namespace and similar to results, same possibility when using url tag which doesn't have value and action set and in same time, its upper package have no or wildcard namespace.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Apache Software Foundation · Apache Strutspublic PoCs found — 41✓ VexDay Proof
exploitdb✓ VexDay Proofwww.exploit-db.com/exploits/45367exploitdbwww.exploit-db.com/exploits/45260unverifiedexploitdbwww.exploit-db.com/exploits/45262unverifiedgithubgithub.com/mazen160/struts-pwn_CVE-2018-11776★ 303githubgithub.com/hook-s3c/CVE-2018-11776-Python-PoC★ 123githubgithub.com/649/Apache-Struts-Shodan-Exploit★ 56githubgithub.com/Ekultek/Strutter★ 21githubgithub.com/arlyone/Apache-Struts-0Day-Exploit★ 16githubgithub.com/brianwrf/S2-057-CVE-2018-11776★ 16githubgithub.com/xfox64x/CVE-2018-11776★ 15githubgithub.com/bhdresh/CVE-2018-11776★ 12githubgithub.com/jiguangsdf/CVE-2018-11776★ 10githubgithub.com/knqyf263/CVE-2018-11776★ 4githubgithub.com/tuxotron/cve-2018-11776-docker★ 3githubgithub.com/cved-sources/cve-2018-11776★ 1githubgithub.com/OzNetNerd/apche-struts-vuln-demo-cve-2018-11776★ 0githubgithub.com/m4sk0ff/CVE-2018-11776★ 0githubgithub.com/jezzus/CVE-2018-11776-Python-PoC★ 0githubgithub.com/sonpt-afk/CVE-2018-11776-FIS★ 0githubgithub.com/cucadili/CVE-2018-11776★ 0githubgithub.com/freshdemo/ApacheStruts-CVE-2018-11776★ 0vulncheckvulncheck.com/xdb/3dd317159905unverifiedcve_referencewww.exploit-db.com/exploits/45260/unverifiedcve_referencewww.exploit-db.com/exploits/45262/unverifiedcve_referencewww.exploit-db.com/exploits/45367/unverifiedvulncheckvulncheck.com/xdb/3c27e7312b41unverifiedvulncheckvulncheck.com/xdb/df6d7ff7d1ecunverifiedvulncheckvulncheck.com/xdb/9047aecb9a46unverifiedvulncheckvulncheck.com/xdb/8b73fc205202unverifiedvulncheckvulncheck.com/xdb/4ab6e9a43949unverifiedvulncheckvulncheck.com/xdb/80e42f4cab6bunverifiedvulncheckvulncheck.com/xdb/306db2bfde48unverifiedvulncheckvulncheck.com/xdb/65f49344f646unverifiedvulncheckvulncheck.com/xdb/1d30c749488dunverifiedvulncheckvulncheck.com/xdb/b26aba013508unverifiedvulncheckvulncheck.com/xdb/7380914b3f92unverifiedvulncheckvulncheck.com/xdb/e1d36328bfd4unverifiedvulncheckvulncheck.com/xdb/515a9f223269unverifiedvulncheckvulncheck.com/xdb/db2bd9c38413unverifiedcve_referencepacketstormsecurity.com/files/172830/Apache-Struts-Remote-Code-Execution.htmlunverifiedvulncheckvulncheck.com/xdb/3d93850f32dcunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
http://packetstormsecurity.com/files/172830/Apache-Struts-Remote-Code-Execution.htmlhttps://cwiki.apache.org/confluence/display/WW/S2-057https://github.com/hook-s3c/CVE-2018-11776-Python-PoChttps://lgtm.com/blog/apache_struts_CVE-2018-11776https://lists.apache.org/thread.html/r6d03e45b81eab03580cf7f8bb51cb3e9a1b10a2cc0c6a2d3cc92ed0c%40%3Cannounce.apache.org%3Ehttps://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0012https://security.netapp.com/advisory/ntap-20180822-0001/https://security.netapp.com/advisory/ntap-20181018-0002/https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-11776https://www.exploit-db.com/exploits/45260/https://www.exploit-db.com/exploits/45262/https://www.exploit-db.com/exploits/45367/