CVE-2019-13031 — LemonLDAP::NG before 1

LemonLDAP::NG before 1.9.20 has an XML External Entity (XXE) issue when submitting a notification to the notification server. By default, the notification server is not enabled and has a "deny all" rule.

01What is this vulnerability?

LemonLDAP::NG before 1.9.20 has an XML External Entity (XXE) issue when submitting a notification to the notification server. By default, the notification server is not enabled and has a "deny all" rule.

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: 2019-06-28T22:42:10.000Z
• Last modified: 2024-08-04T23:41:10.000Z

09References

• gitlab.ow2.org — https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/issues/1820
• lists.debian.org — https://lists.debian.org/debian-lts-announce/2019/07/msg00003.html
• www.calypt.com — https://www.calypt.com/blog/index.php/cve-2019-13031-xxe-on-lemonldapng-2-0-5/