xmlsec 1.2.23 and before is vulnerable to XML External Entity Expansion when parsing crafted input documents, resulting in possible information disclosure or denial of service
Weakness
The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Xmlsec | Xmlsec_project | * | 1.2.23 (including) |
| Red Hat Enterprise Linux 7 | RedHat | xmlsec1-0:1.2.20-7.el7_4 | * |
| Xmlsec1 | Ubuntu | esm-infra-legacy/trusty | * |
| Xmlsec1 | Ubuntu | esm-infra/xenial | * |
| Xmlsec1 | Ubuntu | trusty | * |
| Xmlsec1 | Ubuntu | trusty/esm | * |
| Xmlsec1 | Ubuntu | upstream | * |
| Xmlsec1 | Ubuntu | xenial | * |
| Xmlsec1 | Ubuntu | yakkety | * |
| Xmlsec1 | Ubuntu | zesty | * |
Potential Mitigations
Related Attack Patterns
References
- https://access.redhat.com/errata/RHSA-2017:2492
- https://github.com/lsh123/xmlsec/issues/43
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3PWHBRWXR3RNPHDSTQI6UWDG5ETOQ7VR/
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://access.redhat.com/errata/RHSA-2017:2492
- https://github.com/lsh123/xmlsec/issues/43
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3PWHBRWXR3RNPHDSTQI6UWDG5ETOQ7VR/
- https://www.oracle.com/security-alerts/cpuApr2021.html