QID 356447

Date Published: 2023-11-08

QID 356447: Amazon Linux Security Advisory for apache-ivy : ALAS-2023-1863

Improper restriction of xml external entity reference, xml injection (aka blind xpath injection) vulnerability in apache software foundation apache ivy.
This issue affects any version of apache ivy prior to 2.5.2. when apache ivy prior to 2.5.2 parses xml files - either its own configuration, ivy files or apache maven poms - it will allow downloading external document type definitions and expand any entity references contained therein when used. this can be used to exfiltrate data, access resources only the machine running ivy has access to or disturb the execution of ivy in different ways. starting with ivy 2.5.2 dtd processing is disabled by default except when parsing maven poms where the default is to allow dtd processing but only to include a dtd snippet shipping with ivy that is needed to deal with existing maven poms that are not valid xml files but are nevertheless accepted by maven.
Access can be be made more lenient via newly introduced system properties where needed. users of ivy prior to version 2.5.2 can use java system properties to restrict processing of external dtds, see the section about "jaxp properties for external access restrictions" inside oracle's "java api for xml processing (jaxp) security guide". (
( CVE-2022-46751)

Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Successful exploitation of this vulnerability could lead to a securitybreach or could affect integrity, availability, and confidentiality.

CVSS V3 rated as Critical - 8.2 severity.

CVSS V2 rated as Medium - 5.4 severity.

Solution

Please refer to Amazon advisory: ALAS-2023-1863 for affected packages and patching details, or update with your package manager.

Vendor References

ALAS-2023-1863 - alas.aws.amazon.com/ALAS-2023-1863.html

CVEs related to QID 356447

CVE-2022-46751 |

Software Advisories

Advisory ID	Software	Component	Link
ALAS-2023-1863	amazon linux		alas.aws.amazon.com/ALAS-2023-1863.html

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