CVE-2020-11490 — Manage::Certificates in Zen Load Balancer 3

Manage::Certificates in Zen Load Balancer 3.10.1 allows remote authenticated admins to execute arbitrary OS commands via shell metacharacters in the index.cgi cert_issuer, cert_division, cert_organization, cert_locality, cert_state, cert_country, or cert_email parameter.

01What is this vulnerability?

Manage::Certificates in Zen Load Balancer 3.10.1 allows remote authenticated admins to execute arbitrary OS commands via shell metacharacters in the index.cgi cert_issuer, cert_division, cert_organization, cert_locality, cert_state, cert_country, or cert_email parameter.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2020-04-02T13:07:41.000Z
• Last modified: 2024-08-04T11:35:12.433Z

09References

• code610.blogspot.com — http://code610.blogspot.com/2020/03/pentesting-zen-load-balancer-quick.html
• github.com — https://github.com/c610/tmp/blob/master/zenload4patreons.zip