CVE-2020-11799 — Z-Cron 5

Z-Cron 5.6 Build 04 allows an unprivileged attacker to elevate privileges by modifying a privileged user's task. This can also affect all users who are signed in on the system if a shell is placed in a location that other unprivileged users have access to.

01What is this vulnerability?

Z-Cron 5.6 Build 04 allows an unprivileged attacker to elevate privileges by modifying a privileged user's task. This can also affect all users who are signed in on the system if a shell is placed in a location that other unprivileged users have access to.

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: 2020-04-15T18:11:17.000Z
• Last modified: 2024-08-04T11:42:01.027Z

09References

• blog.spookysec.net — https://blog.spookysec.net/zcron/